CVE-2026-56444 | Medium | 5.9 | 2026-07-22 | In NLnet Labs Unbound 1.20.0 up to and including 1.25.1, when Unbound is configured with 'serve-expired: yes' and 'serve-expired-client-timeout > discard-timeo… |
CVE-2026-56416 | Medium | 4.8 | 2026-07-22 | In NLnet Labs Unbound up to and including version 1.25.1, when the validator builds the canonical RDATA form for an RRSIG-covered PX/RP/MINFO/SOA RRset, it com… |
CVE-2026-55991 | Medium | 5.9 | 2026-07-22 | In NLnet Labs Unbound 1.22.0 up to and including 1.25.1, a remote unauthenticated client can trigger a libngtcp2 assertion (if compiled with assertions on) and… |
CVE-2026-55990 | Medium | 5.9 | 2026-07-22 | In NLnet Labs Unbound 1.7.0 up to and including 1.25.1, when the 'dnscrypt:' clause lists more 'dnscrypt-provider-cert:' files than there are matching 'dnscryp… |
CVE-2026-55973 | High | 7.5 | 2026-07-22 | In NLnet Labs Unbound 1.23.0 up to and including 1.25.1, when 'dns-error-reporting: yes' is set, the EDNS Report-Channel option (code 18) from the last upstrea… |
CVE-2026-55717 | Medium | 5.9 | 2026-07-22 | In NLnet Labs Unbound 1.10.0 up to and including 1.25.1, when 'serve-expired: yes' is set together with a 'response-ip: <net> redirect' /'response-ip-data: <ne… |
CVE-2026-55708 | Low | 3.1 | 2026-07-22 | In NLnet Labs Unbound 1.6.0 up to and including 1.25.1, the 'view_local_data' and 'view_local_datas' commands of 'unbound-control' create a bare local zones tr… |
CVE-2026-54478 | Low | 3.7 | 2026-07-22 | In NLnet Labs Unbound 1.18.0 up to and including 1.25.1, when Unbound listens on a 'proxy-protocol-port' interface with 'answer-cookie: yes', the RFC 9018 serv… |
CVE-2026-52863 | Medium | 5.9 | 2026-07-22 | In NLnet Labs Unbound 1.25.0 up to and including 1.25.1, a fix that makes the 'respip' and 'dns64' modules work together, creates a shallow copy of the view na… |
CVE-2026-50252 | Critical | 9.3 | 2026-07-22 | In NLnet Labs Unbound 1.4.22 up to and including 1.25.1, UDP source port is randomized and intended to serve as a secret value that increases the entropy of DN… |
CVE-2026-50251 | Medium | 5.3 | 2026-07-22 | In NLnet Labs Unbound up to and including version 1.25.1, when 'unwanted-reply-threshold' is enabled (set to any value greater than zero), glue records of 0.0… |
CVE-2026-50248 | Medium | 6.5 | 2026-07-22 | In NLnet Labs Unbound 1.7.0 up to and including 1.25.1, when an auth/rpz zone has a configured primary hostname that resolves to BOGUS A/AAAA, it is still cons… |
CVE-2026-50243 | Low | 3.7 | 2026-07-22 | In NLnet Labs Unbound 1.6.2 up to and including 1.25.1, when Unbound is configured with the 'respip' module in front of the validator together with a 'response… |
CVE-2026-50046 | Medium | 5.9 | 2026-07-22 | In NLnet Labs Unbound 1.15.0 up to and including 1.25.1, the TLS server name used for DNS-over-TLS (DoT) forwarded queries is tied to a struct's ('serviced_que… |
CVE-2026-50045 | Medium | 5.3 | 2026-07-22 | In NLnet Labs Unbound 1.22.0 up to and including 1.25.1, a single client query for a deeply nested name under a DNSSEC-signed parent can cause Unbound to send… |
CVE-2026-46582 | Low | 3.7 | 2026-07-22 | In NLnet Labs Unbound 1.6.0 up to and including 1.25.1, a replay of a wildcard rrset as another piece of data, could be briefly considered DNSSEC secure based… |
CVE-2026-44690 | High | 7.5 | 2026-07-22 | In NLnet Labs Unbound 1.7.0 up to and including 1.25.1, insufficient validation of the RRSIG.Labels field combined with premature cache writes during RFC 8198… |
CVE-2026-44687 | Low | 3.7 | 2026-07-22 | In NLnet Labs Unbound 1.13.2 up to and including 1.25.1, stub or forward zones where the name is below an intermediate labed below a DNSSEC signed zone could b… |
CVE-2026-44621 | Medium | 5.9 | 2026-07-22 | With NLnet Labs Unbound up to and including version 1.25.1, applications using libunbound and configured with 'unwanted-reply-threshold', could eventually be a… |
CVE-2026-42955 | Low | 3.7 | 2026-07-22 | In NLnet Labs Unbound 1.16.2 up to and including 1.25.1, a similar vulnerability as with CVE-2026-40622 in the 'ghost domain names' family of attacks was found… |
CVE-2026-41637 | Low | 3.7 | 2026-07-22 | In NLnet Labs Unbound 1.22.0 up to and including 1.25.1, client terminated DNS-over-QUIC (DoQ) queries are not accounted properly by Unbound resulting in low-c… |
CVE-2026-40691 | High | 7.5 | 2026-07-22 | In Unbound 1.9.0 up to and including 1.25.1, when a DNSCrypt query is received over TCP, the routine that encrypts the reply in place fails to bound the reply… |
CVE-2026-32665 | High | 7.5 | 2026-07-22 | In NLnet Labs Unbound 1.22.0 up to and including 1.25.1, when downstream DNS-over-QUIC (DoQ) is enabled, the first two bidirectional streams on a new QUIC conn… |
CVE-2026-64194 | High | 7.5 | 2026-07-20 | Net::DNS versions through 1.55 for Perl allow Denial of Service via deep DNS compression pointer chains.
Net::DNS::DomainName::decode follows RFC 1035 compres… |
CVE-2026-64193 | Critical | 9.8 | 2026-07-20 | Net::DNS versions through 1.55 for Perl allow remote execution injection via EDNS EXTENDED ERROR.
Net::DNS::RR::OPT::EXTENDED_ERROR::_decompose parses the EXT… |
CVE-2026-12490 | High | 7.5 | 2026-06-25 | When a provide-xfr is given with a tls-auth-name, a secondary requesting a transfer should provide a client certificate with that name. However, no client cert… |
CVE-2026-12246 | High | 8.1 | 2026-06-25 | NSD version 4.14.0 introduced a bug where a specially crafted APL RR, with an adflength larger than permitted for the address family will overwrite the stack w… |
CVE-2026-12245 | High | 7.5 | 2026-06-25 | NSD from version 4.13.0 has a heap use-after-free bug in logging errors on TLS connections, causing a crash of the server process, which can be triggered trivi… |
CVE-2026-12244 | High | 8.8 | 2026-06-25 | If NSD is configured as secondary for a zone, the primary of that zone can crash NSD with an AXFR containing a DNS message with a special crafted SVCB RR with… |
CVE-2026-10846 | High | 7.5 | 2026-06-10 | NLnet Labs ldns 1.2.0 up to and including versions 1.9.0, when used in applications as (stub) resolver over UDP, lacks matching the query destination address a… |
CVE-2026-49235 | High | 7.5 | 2026-06-08 | When Routinator encounters a file via RRDP using a specifically crafted Document Type Definition, Routinator crashes. |
CVE-2026-49234 | High | 7.5 | 2026-06-08 | When sending a specifically crafted non-UTF-8 string as select-asn query parameter to the /api/v1/origins endpoint, Routinator crashes.
This only affects use… |
CVE-2026-49233 | High | 7.5 | 2026-06-08 | Routinator does not properly check the module component of rsync URIs, which are used to create the file system paths for the Routinator cache. This allows for… |
CVE-2026-44608 | Medium | 5.9 | 2026-05-20 | NLnet Labs Unbound 1.14.0 up to and including version 1.25.0 has a locking inconsistency vulnerability that when certain conditions are met (multi-threaded, RP… |
CVE-2026-44390 | Medium | 5.3 | 2026-05-20 | NLnet Labs Unbound up to and including version 1.25.0 has a vulnerability when handling replies with very large RRsets that Unbound needs to perform name compr… |
CVE-2026-42960 | Critical | 10.0 | 2026-05-20 | NLnet Labs Unbound up to and including version 1.25.0 is vulnerable to poisoning via promiscuous records for the authority section. Promiscuous RRSets that com… |
CVE-2026-42959 | High | 7.5 | 2026-05-20 | NLnet Labs Unbound up to and including version 1.25.0 has a denial of service vulnerability in the DNSSEC validator that can lead to a crash given malicious up… |
CVE-2026-42944 | High | 7.5 | 2026-05-20 | NLnet Labs Unbound 1.14.0 up to and including version 1.25.0 has a vulnerability that results in heap overflow when encoding multiple NSID and/or DNS Cookie ED… |
CVE-2026-42923 | Medium | 5.3 | 2026-05-20 | NLnet Labs Unbound up to and including version 1.25.0 has a vulnerability in the DNSSEC validator where the code path to consult the negative cache for DS reco… |
CVE-2026-42534 | Medium | 5.3 | 2026-05-20 | NLnet Labs Unbound up to and including version 1.25.0 has a vulnerability in the jostle logic that could defeat its purpose and degrade resolution performance… |
CVE-2026-41292 | High | 7.5 | 2026-05-20 | NLnet Labs Unbound up to and including version 1.25.0 is vulnerable to a degradation of service attack related to parsing long lists of incoming EDNS options… |
CVE-2026-40622 | High | 7.5 | 2026-05-20 | NLnet Labs Unbound 1.16.2 up to and including version 1.25.0 has a vulnerability of the 'ghost domain names' family of attacks that could extend the ghost doma… |
CVE-2026-33278 | Critical | 9.8 | 2026-05-20 | NLnet Labs Unbound 1.19.1 up to and including version 1.25.0 has a vulnerability in the DNSSEC validator that enables denial of service and possible remote cod… |
CVE-2026-32792 | Medium | 5.3 | 2026-05-20 | NLnet Labs Unbound 1.6.2 up to and including version 1.25.0 has a denial of service vulnerability when compiled with DNSCrypt support ('--enable-dnscrypt'). A… |
CVE-2024-8508 | Medium | 5.3 | 2024-10-03 | NLnet Labs Unbound up to and including version 1.21.0 contains a vulnerability when handling replies with very large RRsets that it needs to perform name compr… |
CVE-2024-1931 | High | 7.5 | 2024-03-07 | NLnet Labs Unbound version 1.18.0 up to and including version 1.19.1 contain a vulnerability that can cause denial of service by a certain code path that can l… |
CVE-2024-1622 | High | 7.5 | 2024-02-26 | Due to a mistake in error checking, Routinator will terminate when an incoming RTR connection is reset by the peer too quickly after opening. |
CVE-2023-50387 | High | 7.5 | 2024-02-14 | Certain DNSSEC aspects of the DNS protocol (in RFC 4033, 4034, 4035, 6840, and related RFCs) allow remote attackers to cause a denial of service (CPU consumpti… |
CVE-2023-39916 | Critical | 9.3 | 2023-09-13 | NLnet Labs’ Routinator 0.9.0 up to and including 0.12.1 as well as 0.14.0 up to and including 0.14.2 contains a possible path traversal vulnerability in the op… |
CVE-2023-39915 | High | 7.5 | 2023-09-13 | NLnet Labs' Routinator up to and including version 0.12.1 may crash when trying to parse certain malformed RPKI objects. This is due to insufficient input chec… |
CVE-2023-39914 | High | 7.5 | 2023-09-13 | NLnet Labs' bcder library up to and including version 0.7.2 panics while decoding certain invalid input data rather than rejecting the data with an error. This… |
CVE-2023-0158 | High | 7.5 | 2023-01-17 | NLnet Labs Krill supports direct access to the RRDP repository content through its built-in web server at the "/rrdp" endpoint. Prior to 0.12.1 a direct query… |
CVE-2022-3204 | High | 7.5 | 2022-09-26 | A vulnerability named 'Non-Responsive Delegation Attack' (NRDelegation Attack) has been discovered in various DNS resolving software. The NRDelegation Attack w… |
CVE-2022-3029 | High | 7.5 | 2022-09-13 | In NLnet Labs Routinator 0.9.0 up to and including 0.11.2, due to a mistake in error handling, data in RRDP snapshot and delta files that isn’t correctly base… |
CVE-2022-30699 | Medium | 6.5 | 2022-08-01 | NLnet Labs Unbound, up to and including version 1.16.1, is vulnerable to a novel type of the "ghost domain names" attack. The vulnerability works by targeting… |
CVE-2022-30698 | Medium | 6.5 | 2022-08-01 | NLnet Labs Unbound, up to and including version 1.16.1 is vulnerable to a novel type of the "ghost domain names" attack. The vulnerability works by targeting a… |
CVE-2020-19861 | High | 7.5 | 2022-01-21 | When a zone file in ldns 1.7.1 is parsed, the function ldns_nsec3_salt_data is too trusted for the length value obtained from the zone file. When the memcpy is… |
CVE-2020-19860 | Medium | 6.5 | 2022-01-21 | When ldns version 1.7.1 verifies a zone file, the ldns_rr_new_frm_str_internal function has a heap out of bounds read vulnerability. An attacker can leak infor… |
CVE-2021-43174 | High | 7.5 | 2021-11-09 | NLnet Labs Routinator versions 0.9.0 up to and including 0.10.1, support the gzip transfer encoding when querying RRDP repositories. This encoding can be used… |
CVE-2021-43173 | High | 7.5 | 2021-11-09 | In NLnet Labs Routinator prior to 0.10.2, a validation run can be delayed significantly by an RRDP repository by not answering but slowly drip-feeding bytes to… |
CVE-2021-43172 | High | 7.5 | 2021-11-09 | NLnet Labs Routinator prior to 0.10.2 happily processes a chain of RRDP repositories of infinite length causing it to never finish a validation run. In RPKI, a… |
CVE-2021-41531 | High | 7.5 | 2021-09-21 | NLnet Labs Routinator prior to 0.10.0 produces invalid RTR payload if an RPKI CA uses too large values in the max-length parameter in a ROA. This will lead to… |
CVE-2019-25042 | Critical | 9.8 | 2021-04-27 | Unbound before 1.9.5 allows an out-of-bounds write via a compressed name in rdata_copy. NOTE: The vendor disputes that this is a vulnerability. Although the co… |
CVE-2019-25041 | High | 7.5 | 2021-04-27 | Unbound before 1.9.5 allows an assertion failure via a compressed name in dname_pkt_copy. NOTE: The vendor disputes that this is a vulnerability. Although the… |
CVE-2019-25040 | High | 7.5 | 2021-04-27 | Unbound before 1.9.5 allows an infinite loop via a compressed name in dname_pkt_copy. NOTE: The vendor disputes that this is a vulnerability. Although the code… |
CVE-2019-25039 | Critical | 9.8 | 2021-04-27 | Unbound before 1.9.5 allows an integer overflow in a size calculation in respip/respip.c. NOTE: The vendor disputes that this is a vulnerability. Although the… |
CVE-2019-25038 | Critical | 9.8 | 2021-04-27 | Unbound before 1.9.5 allows an integer overflow in a size calculation in dnscrypt/dnscrypt.c. NOTE: The vendor disputes that this is a vulnerability. Although… |
CVE-2019-25037 | High | 7.5 | 2021-04-27 | Unbound before 1.9.5 allows an assertion failure and denial of service in dname_pkt_copy via an invalid packet. NOTE: The vendor disputes that this is a vulner… |
CVE-2019-25036 | High | 7.5 | 2021-04-27 | Unbound before 1.9.5 allows an assertion failure and denial of service in synth_cname. NOTE: The vendor disputes that this is a vulnerability. Although the cod… |
CVE-2019-25035 | Critical | 9.8 | 2021-04-27 | Unbound before 1.9.5 allows an out-of-bounds write in sldns_bget_token_par. NOTE: The vendor disputes that this is a vulnerability. Although the code may be vu… |
CVE-2019-25034 | Critical | 9.8 | 2021-04-27 | Unbound before 1.9.5 allows an integer overflow in sldns_str2wire_dname_buf_origin, leading to an out-of-bounds write. NOTE: The vendor disputes that this is a… |
CVE-2019-25033 | Critical | 9.8 | 2021-04-27 | Unbound before 1.9.5 allows an integer overflow in the regional allocator via the ALIGN_UP macro. NOTE: The vendor disputes that this is a vulnerability. Altho… |
CVE-2019-25032 | Critical | 9.8 | 2021-04-27 | Unbound before 1.9.5 allows an integer overflow in the regional allocator via regional_alloc. NOTE: The vendor disputes that this is a vulnerability. Although… |
CVE-2019-25031 | Medium | 5.9 | 2021-04-27 | Unbound before 1.9.5 allows configuration injection in create_unbound_ad_servers.sh upon a successful man-in-the-middle attack against a cleartext HTTP session… |
CVE-2020-28935 | Medium | 5.5 | 2020-12-07 | NLnet Labs Unbound, up to and including version 1.12.0, and NLnet Labs NSD, up to and including version 4.3.3, contain a local vulnerability that would allow f… |
CVE-2020-10772 | High | 7.5 | 2020-11-27 | An incomplete fix for CVE-2020-12662 was shipped for Unbound in Red Hat Enterprise Linux 7, as part of erratum RHSA-2020:2414. Vulnerable versions of Unbound c… |
CVE-2020-17366 | High | 7.4 | 2020-08-05 | An issue was discovered in NLnet Labs Routinator 0.1.0 through 0.7.1. It allows remote attackers to bypass intended access restrictions or to cause a denial of… |
CVE-2020-12663 | High | 7.5 | 2020-05-19 | Unbound before 1.10.1 has an infinite loop via malformed DNS answers received from upstream servers. |
CVE-2020-12662 | High | 7.5 | 2020-05-19 | Unbound before 1.10.1 has Insufficient Control of Network Message Volume, aka an "NXNSAttack" issue. This is triggered by random subdomains in the NSDNAME in N… |
CVE-2019-18934 | High | 7.3 | 2019-11-19 | Unbound 1.6.4 through 1.9.4 contain a vulnerability in the ipsec module that can cause shell code execution after receiving a specially crafted answer. This is… |
CVE-2013-5661 | Medium | 5.9 | 2019-11-05 | Cache Poisoning issue exists in DNS Response Rate Limiting. |
CVE-2019-16866 | High | 7.5 | 2019-10-03 | Unbound before 1.9.4 accesses uninitialized memory, which allows remote attackers to trigger a crash via a crafted NOTIFY query. The source IP address of the q… |
CVE-2019-13207 | Critical | 9.8 | 2019-07-03 | nsd-checkzone in NLnet Labs NSD 4.2.0 has a Stack-based Buffer Overflow in the dname_concatenate() function in dname.c. |
CVE-2017-15105 | Medium | 5.3 | 2018-01-23 | A flaw was found in the way unbound before 1.6.8 validated wildcard-synthesized NSEC records. An improperly validated wildcard NSEC record could be used to pro… |
CVE-2017-1000232 | Critical | 9.8 | 2017-11-17 | A double-free vulnerability in str2host.c in ldns 1.7.0 have unspecified impact and attack vectors. |
CVE-2017-1000231 | Critical | 9.8 | 2017-11-17 | A double-free vulnerability in parse.c in ldns 1.7.0 have unspecified impact and attack vectors. |
CVE-2016-6173 | High | 7.5 | 2017-02-09 | NSD before 4.1.11 allows remote DNS master servers to cause a denial of service (/tmp disk consumption and slave server crash) via a zone transfer with unlimit… |
CVE-2014-8602 | | | 2014-12-11 | iterator.c in NLnet Labs Unbound before 1.5.1 does not limit delegation chaining, which allows remote attackers to cause a denial of service (memory and CPU co… |
CVE-2014-3209 | | | 2014-11-16 | The ldns-keygen tool in ldns 1.6.x uses the current umask to set the privileges of the private key, which might allow local users to obtain the private key by… |
CVE-2012-2978 | | | 2012-07-27 | query.c in NSD 3.0.x through 3.0.8, 3.1.x through 3.1.1, and 3.2.x before 3.2.12 allows remote attackers to cause a denial of service (NULL pointer dereference… |
CVE-2011-3581 | | | 2011-11-04 | Heap-based buffer overflow in the ldns_rr_new_frm_str_internal function in ldns before 1.6.11 allows remote attackers to cause a denial of service (crash) and… |
CVE-2009-4008 | | | 2011-06-02 | Unbound before 1.4.4 does not send responses for signed zones after mishandling an unspecified query, which allows remote attackers to cause a denial of servic… |
CVE-2011-1922 | | | 2011-05-31 | daemon/worker.c in Unbound 1.x before 1.4.10, when debugging functionality and the interface-automatic option are enabled, allows remote attackers to cause a d… |
CVE-2010-0969 | | | 2010-03-16 | Unbound before 1.4.3 does not properly align structures on 64-bit platforms, which allows remote attackers to cause a denial of service (daemon crash) via unsp… |
CVE-2009-3602 | | | 2009-10-13 | Unbound before 1.3.4 does not properly verify signatures for NSEC3 records, which allows remote attackers to cause secure delegations to be downgraded via DNS… |
CVE-2009-1755 | | | 2009-05-22 | Off-by-one error in the packet_read_query_section function in packet.c in nsd 3.2.1, and process_query_section in query.c in nsd 2.3.7, allows remote attackers… |
CVE-2009-1086 | | | 2009-03-25 | Heap-based buffer overflow in the ldns_rr_new_frm_str_internal function in ldns 1.4.x allows remote attackers to cause a denial of service (memory corruption)… |