CVE-2026-94084 | Critical | 9.4 | 2026-09-20 | Suricata before 8.0.7 has an Http2ThreadMultiBuf use-after-free when a transaction is inspected by rules that use http.response_header with and without a trans… |
CVE-2026-94083 | Critical | 9.4 | 2026-09-20 | Suricata before 8.0.7 has a DoH2 type confusion that can cause an invalid free, because cleanup code for the HTTP2 state is executed even though the actual sta… |
CVE-2026-71855 | Medium | 5.9 | 2026-09-18 | Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine. Prior to 7.0.17 and 8.0.6, src/flow-hash… |
CVE-2026-71418 | High | 7.5 | 2026-09-18 | Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine. From 8.0.0 until 8.0.6, DNS-over-HTTP/2 p… |
CVE-2026-63452 | High | 7.5 | 2026-09-18 | Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine. From 8.0.0 until 8.0.6, the HTTP/1 parser… |
CVE-2026-63451 | Low | 3.3 | 2026-09-18 | Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine. From 8.0.0 until 8.0.6, a locally supplie… |
CVE-2026-63450 | Low | 3.7 | 2026-09-18 | Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine. Prior to 8.0.6, the FTP parser in src/app… |
CVE-2026-63449 | Low | 3.7 | 2026-09-18 | Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine. From 8.0.0 until 8.0.6, the SIP parser in… |
CVE-2026-63448 | Medium | 5.9 | 2026-09-18 | Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine. Prior to 7.0.17 and 8.0.6, the SMB parser… |
CVE-2026-63447 | High | 7.5 | 2026-09-18 | Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine. From 8.0.5 until 8.0.6, the FTP parser in… |
CVE-2026-63446 | High | 7.5 | 2026-09-18 | Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine. From 8.0.0 until 8.0.6, AppLayerParserSet… |
CVE-2026-57229 | Medium | 5.3 | 2026-09-18 | Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine. From 8.0.0 until 8.0.6, the SMTP MIME par… |
CVE-2026-57228 | High | 8.2 | 2026-09-18 | Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine. From 7.0.13 until 7.0.17, the SMTP MIME q… |
CVE-2026-57227 | High | 7.5 | 2026-09-18 | Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine. From 7.0.0 until 7.0.17 and 8.0.6, the MQ… |
CVE-2026-57225 | Low | 3.3 | 2026-09-18 | Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine. From 8.0.0 until 8.0.6, src/datasets-cont… |
CVE-2026-57223 | High | 7.0 | 2026-09-18 | Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine. Prior to 7.0.17 and 8.0.6, the Windows se… |
CVE-2026-57226 | Low | 3.7 | 2026-09-18 | Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine. Prior to 7.0.17 and 8.0.6, HTTP SWF decom… |
CVE-2026-57224 | Medium | 6.5 | 2026-09-18 | Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine. From 8.0.0 until 8.0.6, the DHCP parser i… |
CVE-2026-57222 | Medium | 5.3 | 2026-09-18 | Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine. Prior to 7.0.17 and 8.0.6, crafted IPv4 a… |
CVE-2026-46352 | High | 7.5 | 2026-09-16 | Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine. Starting in version 8.0.0 and prior to ve… |
CVE-2026-45770 | High | 7.5 | 2026-09-10 | Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine. Starting in version 8.0.0 and prior to ve… |
CVE-2026-45769 | High | 7.5 | 2026-09-10 | Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine. Prior to versions 7.0.16 and 8.0.5,IKEv2… |
CVE-2026-45768 | High | 7.5 | 2026-09-10 | Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine. Starting in version 8.0.0 and prior to ve… |
CVE-2026-45767 | Medium | 4.4 | 2026-09-10 | Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine. Prior to versions 7.0.16 and 8.0.5, a mal… |
CVE-2026-45766 | High | 7.5 | 2026-09-10 | Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine. Prior to versions 7.0.16 and 8.0.5, certa… |
CVE-2026-45765 | High | 7.5 | 2026-09-10 | Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine. Prior to versions 7.0.16 and 8.0.5, DNP3… |
CVE-2026-45764 | Critical | 9.1 | 2026-09-10 | Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine. Prior to versions 7.0.16 and 8.0.5, a pro… |
CVE-2026-45762 | High | 7.5 | 2026-09-10 | Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine. Prior to versions 7.0.16 and 8.0.5, Suric… |
CVE-2026-45761 | Low | 3.3 | 2026-09-10 | Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine. Prior to versions 7.0.16 and 8.0.5, a cra… |
CVE-2026-45759 | High | 7.5 | 2026-09-10 | Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine. Prior to versions 7.0.16 and 8.0.5, Suric… |
CVE-2026-45752 | Medium | 5.9 | 2026-09-10 | Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine. Starting in version 8.0.0 and prior to ve… |
CVE-2026-45751 | Medium | 5.9 | 2026-09-10 | Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine. Prior to versions 7.0.16 and 8.0.5, Suric… |
CVE-2026-46387 | High | 7.5 | 2026-09-10 | Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine. Prior to versions 7.0.16 and 8.0.5, Suric… |
CVE-2026-45747 | High | 7.5 | 2026-09-10 | Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine. Prior to version 7.0.16, the Lua TLS cert… |
CVE-2026-45763 | Medium | 5.9 | 2026-09-10 | Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine. Starting in version 8.0.0 and prior to ve… |
CVE-2026-31937 | High | 7.5 | 2026-04-02 | Suricata is a network IDS, IPS and NSM engine. Prior to version 7.0.15, inefficiency in DCERPC buffering can lead to a performance degradation. This issue has… |
CVE-2026-31935 | High | 7.5 | 2026-04-02 | Suricata is a network IDS, IPS and NSM engine. Prior to versions 7.0.15 and 8.0.4, flooding of craft HTTP2 continuation frames can lead to memory exhaustion, u… |
CVE-2026-31934 | High | 7.5 | 2026-04-02 | Suricata is a network IDS, IPS and NSM engine. From version 8.0.0 to before version 8.0.4, there is a quadratic complexity issue when searching for URLs in mim… |
CVE-2026-31933 | High | 7.5 | 2026-04-02 | Suricata is a network IDS, IPS and NSM engine. Prior to versions 7.0.15 and 8.0.4, specially crafted traffic can cause Suricata to slow down, affecting perform… |
CVE-2026-31932 | High | 7.5 | 2026-04-02 | Suricata is a network IDS, IPS and NSM engine. Prior to versions 7.0.15 and 8.0.4, inefficiency in KRB5 buffering can lead to performance degradation. This iss… |
CVE-2026-31931 | High | 7.5 | 2026-04-02 | Suricata is a network IDS, IPS and NSM engine. From version 8.0.0 to before version 8.0.4, use of the "tls.alpn" rule keyword can cause Suricata to crash with… |
CVE-2026-22264 | High | 7.4 | 2026-01-27 | Suricata is a network IDS, IPS and NSM engine. Prior to version 8.0.3 and 7.0.14, an unsigned integer overflow can lead to a heap use-after-free condition when… |
CVE-2026-22263 | Medium | 5.3 | 2026-01-27 | Suricata is a network IDS, IPS and NSM engine. Starting in version 8.0.0 and prior to version 8.0.3, inefficiency in http1 headers parsing can lead to slowdown… |
CVE-2026-22262 | Medium | 5.9 | 2026-01-27 | Suricata is a network IDS, IPS and NSM engine. While saving a dataset a stack buffer is used to prepare the data. Prior to versions 8.0.3 and 7.0.14, if the da… |
CVE-2026-22261 | Low | 3.7 | 2026-01-27 | Suricata is a network IDS, IPS and NSM engine. Prior to versions 8.0.3 and 7.0.14, various inefficiencies in xff handling, especially for alerts not triggered… |
CVE-2026-22260 | High | 7.5 | 2026-01-27 | Suricata is a network IDS, IPS and NSM engine. Starting in version 8.0.0 and prior to version 8.0.3, Suricata can crash with a stack overflow. Version 8.0.3 pa… |
CVE-2026-22259 | High | 7.5 | 2026-01-27 | Suricata is a network IDS, IPS and NSM engine. Prior to versions 8.0.3 and 7.0.14, specially crafted traffic can cause Suricata to consume large amounts of mem… |
CVE-2026-22258 | High | 7.5 | 2026-01-27 | Suricata is a network IDS, IPS and NSM engine. Prior to versions 8.0.3 and 7.0.14, crafted DCERPC traffic can cause Suricata to expand a buffer w/o limits, lea… |
CVE-2025-64344 | High | 7.5 | 2025-11-26 | Suricata is a network IDS, IPS and NSM engine developed by the OISF (Open Information Security Foundation) and the Suricata community. Prior to versions 7.0.13… |
CVE-2025-64335 | High | 7.5 | 2025-11-26 | Suricata is a network IDS, IPS and NSM engine developed by the OISF (Open Information Security Foundation) and the Suricata community. In versions from 8.0.0 t… |
CVE-2025-64334 | High | 7.5 | 2025-11-26 | Suricata is a network IDS, IPS and NSM engine developed by the OISF (Open Information Security Foundation) and the Suricata community. In versions from 8.0.0 t… |
CVE-2025-64333 | High | 7.5 | 2025-11-26 | Suricata is a network IDS, IPS and NSM engine developed by the OISF (Open Information Security Foundation) and the Suricata community. Prior to versions 7.0.13… |
CVE-2025-64332 | High | 7.5 | 2025-11-26 | Suricata is a network IDS, IPS and NSM engine developed by the OISF (Open Information Security Foundation) and the Suricata community. Prior to versions 7.0.13… |
CVE-2025-64331 | High | 7.5 | 2025-11-26 | Suricata is a network IDS, IPS and NSM engine developed by the OISF (Open Information Security Foundation) and the Suricata community. Prior to versions 7.0.13… |
CVE-2025-64330 | High | 7.5 | 2025-11-26 | Suricata is a network IDS, IPS and NSM engine developed by the OISF (Open Information Security Foundation) and the Suricata community. Prior to versions 7.0.13… |
CVE-2025-59150 | High | 7.5 | 2025-10-01 | Suricata is a network IDS, IPS and NSM engine developed by the OISF (Open Information Security Foundation) and the Suricata community. Version 8.0.0's usage of… |
CVE-2025-59149 | Medium | 6.2 | 2025-10-01 | Suricata is a network IDS, IPS and NSM engine developed by the OISF (Open Information Security Foundation) and the Suricata community. In version 8.0.0, rules… |
CVE-2025-59148 | High | 7.5 | 2025-10-01 | Suricata is a network IDS, IPS and NSM engine developed by the OISF (Open Information Security Foundation) and the Suricata community. Versions 8.0.0 and below… |
CVE-2025-59147 | High | 7.5 | 2025-10-01 | Suricata is a network IDS, IPS and NSM engine developed by the OISF (Open Information Security Foundation) and the Suricata community. Versions 7.0.11 and belo… |
CVE-2025-53537 | High | 7.5 | 2025-07-23 | LibHTP is a security-aware parser for the HTTP protocol and its related bits and pieces. In versions 0.5.50 and below, there is a traffic-induced memory leak t… |
CVE-2025-53538 | High | 7.5 | 2025-07-22 | Suricata is a network IDS, IPS and NSM engine developed by the OISF (Open Information Security Foundation) and the Suricata community. In versions 7.0.10 and b… |
CVE-2025-29918 | Medium | 6.2 | 2025-04-10 | Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine. A PCRE rule can be written that leads to… |
CVE-2025-29917 | Medium | 6.2 | 2025-04-10 | Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine. The bytes setting in the decode_base64 ke… |
CVE-2025-29916 | Medium | 6.2 | 2025-04-10 | Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine. Datasets declared in rules have an option… |
CVE-2025-29915 | High | 7.5 | 2025-04-10 | Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine. The AF_PACKET defrag option is enabled by… |
CVE-2024-55629 | High | 7.5 | 2025-01-06 | Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine. Prior to 7.0.8, TCP streams with TCP urge… |
CVE-2024-55628 | High | 7.5 | 2025-01-06 | Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine. Prior to version 7.0.8, DNS resource name… |
CVE-2024-55627 | Medium | 5.9 | 2025-01-06 | Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine. Prior to 7.0.8, a specially crafted TCP s… |
CVE-2024-55626 | Low | 3.3 | 2025-01-06 | Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine. Prior to 7.0.8, a large BPF filter file p… |
CVE-2024-55605 | High | 7.5 | 2025-01-06 | Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine. Prior to 7.0.8, a large input buffer to t… |
CVE-2024-47522 | High | 7.5 | 2024-10-16 | Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine. Prior to version 7.0.7, invalid ALPN in T… |
CVE-2024-47188 | High | 7.5 | 2024-10-16 | Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine. Prior to version 7.0.7, missing initializ… |
CVE-2024-47187 | High | 7.5 | 2024-10-16 | Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine. Prior to version 7.0.7, missing initializ… |
CVE-2024-45797 | High | 7.5 | 2024-10-16 | LibHTP is a security-aware parser for the HTTP protocol and the related bits and pieces. Prior to version 0.5.49, unbounded processing of HTTP request and resp… |
CVE-2024-45796 | Medium | 5.3 | 2024-10-16 | Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine. Prior to version 7.0.7, a logic error dur… |
CVE-2024-45795 | High | 7.5 | 2024-10-16 | Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine. Prior to version 7.0.7, rules using datas… |
CVE-2024-38536 | High | 7.5 | 2024-07-11 | Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine. A memory allocation failure due to `http… |
CVE-2024-38535 | High | 7.5 | 2024-07-11 | Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine. Suricata can run out of memory when parsi… |
CVE-2024-38534 | High | 7.5 | 2024-07-11 | Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine. Crafted modbus traffic can lead to unlimi… |
CVE-2024-37151 | Medium | 5.3 | 2024-07-11 | Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine.
Mishandling of multiple fragmented packe… |
CVE-2024-32867 | Medium | 5.3 | 2024-05-07 | Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine. Prior to 7.0.5 and 6.0.19, various proble… |
CVE-2024-32664 | Medium | 5.3 | 2024-05-07 | Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine. Prior to 7.0.5 and 6.0.19, specially craf… |
CVE-2024-32663 | High | 7.5 | 2024-05-07 | Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine. Prior to 7.0.5 and 6.0.19, a small amount… |
CVE-2024-28871 | High | 7.5 | 2024-04-04 | LibHTP is a security-aware parser for the HTTP protocol and the related bits and pieces. Version 0.5.46 may parse malformed request traffic, leading to excessi… |
CVE-2024-28870 | High | 7.5 | 2024-04-03 | Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine developed by the OISF and the Suricata com… |
CVE-2024-24568 | Medium | 5.3 | 2024-02-26 | Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine. Prior to 7.0.3, the rules inspecting HTT… |
CVE-2024-23839 | High | 7.1 | 2024-02-26 | Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine. Prior to 7.0.3, specially crafted traffi… |
CVE-2024-23837 | High | 7.5 | 2024-02-26 | LibHTP is a security-aware parser for the HTTP protocol. Crafted traffic can cause excessive processing time of HTTP headers, leading to denial of service. Thi… |
CVE-2024-23836 | High | 7.5 | 2024-02-26 | Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine. Prior to versions 6.0.16 and 7.0.3, an at… |
CVE-2024-23835 | High | 7.5 | 2024-02-26 | Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine. Prior to version 7.0.3, excessive memory… |
CVE-2023-35853 | Critical | 9.8 | 2023-06-19 | In Suricata before 6.0.13, an adversary who controls an external source of Lua rules may be able to execute Lua code. This is addressed in 6.0.13 by disabling… |
CVE-2023-35852 | High | 7.5 | 2023-06-19 | In Suricata before 6.0.13 (when there is an adversary who controls an external source of rules), a dataset filename, that comes from a rule, may trigger absolu… |
CVE-2020-19678 | High | 7.5 | 2023-04-06 | Directory Traversal vulnerability found in Pfsense v.2.1.3 and Pfsense Suricata v.1.4.6 pkg v.1.0.1 allows a remote attacker to obtain sensitive information vi… |
CVE-2021-45098 | High | 7.5 | 2021-12-16 | An issue was discovered in Suricata before 6.0.4. It is possible to bypass/evade any HTTP-based signature by faking an RST TCP packet with random TCP options o… |
CVE-2021-37592 | Critical | 9.8 | 2021-11-19 | Suricata before 5.0.8 and 6.x before 6.0.4 allows TCP evasion via a client with a crafted TCP/IP stack that can send a certain sequence of segments. |
CVE-2021-35063 | High | 7.5 | 2021-07-22 | Suricata before 5.0.7 and 6.x before 6.0.3 has a "critical evasion." |
CVE-2019-18625 | High | 7.5 | 2020-01-06 | An issue was discovered in Suricata 5.0.0. It was possible to bypass/evade any tcp based signature by faking a closed TCP session using an evil server. After t… |
CVE-2019-18792 | Critical | 9.1 | 2020-01-06 | An issue was discovered in Suricata 5.0.0. It is possible to bypass/evade any tcp based signature by overlapping a TCP segment with a fake FIN packet. The fake… |
CVE-2019-17420 | Medium | 5.3 | 2019-10-10 | In OISF LibHTP before 0.5.31, as used in Suricata 4.1.4 and other products, an HTTP protocol parsing error causes the http_header signature to not alert on a r… |
CVE-2019-1010279 | High | 7.5 | 2019-07-18 | Open Information Security Foundation Suricata prior to version 4.1.3 is affected by: Denial of Service - TCP/HTTP detection bypass. The impact is: An attacker… |