CVE-2026-44603 | Low | 3.7 | 2026-05-07 | Tor before 0.4.9.7 has an out-of-bounds read by one byte via a malformed BEGIN cell, aka TROVE-2026-007. |
CVE-2026-44602 | Low | 3.7 | 2026-05-07 | Tor before 0.4.9.7 has a NULL pointer dereference when a CERT cell is received out of order, aka TROVE-2026-006. |
CVE-2026-44601 | Low | 3.7 | 2026-05-07 | Tor before 0.4.9.7, when circuit queue memory pressure exists, can experience a client crash because of a double close of a circuit, aka TROVE-2026-009. |
CVE-2026-44600 | Low | 3.7 | 2026-05-07 | Tor before 0.4.9.7 mishandles accounting of the conflux out-of-order queue during the clearing of a queue, aka TROVE-2026-010. |
CVE-2026-44599 | Low | 3.7 | 2026-05-07 | Tor before 0.4.9.7 can attempt or accept BEGIN_DIR via conflux legs, aka TROVE-2026-008. |
CVE-2026-44597 | Low | 3.7 | 2026-05-07 | Tor before 0.4.9.7 has an out-of-bounds read when an END, a TRUNCATE, or a TRUNCATED cell lacks a reason in its payload, aka TROVE-2026-011. |
CVE-2023-23589 | Medium | 6.5 | 2023-01-14 | The SafeSocks option in Tor before 0.4.7.13 has a logic error in which the unsafe SOCKS4 protocol can be used but not the safe SOCKS4a protocol, aka TROVE-2022… |
CVE-2022-33903 | High | 7.5 | 2022-07-17 | Tor 0.4.7.x before 0.4.7.8 allows a denial of service via the wedging of RTT estimation. |
CVE-2021-46702 | Medium | 5.5 | 2022-02-26 | Tor Browser 9.0.7 on Windows 10 build 10586 is vulnerable to information disclosure. This could allow local attackers to bypass the intended anonymity feature… |
CVE-2021-39246 | Medium | 6.1 | 2021-09-24 | Tor Browser through 10.5.6 and 11.x through 11.0a4 allows a correlation attack that can compromise the privacy of visits to v2 onion addresses. Exact timestamp… |
CVE-2021-38385 | High | 7.5 | 2021-08-30 | Tor before 0.3.5.16, 0.4.5.10, and 0.4.6.7 mishandles the relationship between batch-signature verification and single-signature verification, leading to a rem… |
CVE-2021-34550 | High | 7.5 | 2021-06-29 | An issue was discovered in Tor before 0.4.6.5, aka TROVE-2021-006. The v3 onion service descriptor parsing allows out-of-bounds memory access, and a client cra… |
CVE-2021-34549 | High | 7.5 | 2021-06-29 | An issue was discovered in Tor before 0.4.6.5, aka TROVE-2021-005. Hashing is mishandled for certain retrieval of circuit data. Consequently. an attacker can t… |
CVE-2021-34548 | High | 7.5 | 2021-06-29 | An issue was discovered in Tor before 0.4.6.5, aka TROVE-2021-003. An attacker can forge RELAY_END or RELAY_RESOLVED to bypass the intended access control for… |
CVE-2021-28090 | Medium | 5.3 | 2021-03-19 | Tor before 0.4.5.7 allows a remote attacker to cause Tor directory authorities to exit with an assertion failure, aka TROVE-2021-002. |
CVE-2021-28089 | High | 7.5 | 2021-03-19 | Tor before 0.4.5.7 allows a remote participant in the Tor directory protocol to exhaust CPU resources on a target, aka TROVE-2021-001. |
CVE-2020-15572 | High | 7.5 | 2020-07-15 | Tor before 0.4.3.6 has an out-of-bounds memory access that allows a remote denial-of-service (crash) attack against Tor instances built to use Mozilla Network… |
CVE-2020-10593 | High | 7.5 | 2020-03-23 | Tor before 0.3.5.10, 0.4.x before 0.4.1.9, and 0.4.2.x before 0.4.2.7 allows remote attackers to cause a Denial of Service (memory leak), aka TROVE-2020-004. T… |
CVE-2020-10592 | High | 7.5 | 2020-03-23 | Tor before 0.3.5.10, 0.4.x before 0.4.1.9, and 0.4.2.x before 0.4.2.7 allows remote attackers to cause a Denial of Service (CPU consumption), aka TROVE-2020-00… |
CVE-2020-8516 | Medium | 5.3 | 2020-02-02 | The daemon in Tor through 0.4.1.8 and 0.4.2.x through 0.4.2.6 does not verify that a rendezvous node is known before attempting to connect to it, which might m… |
CVE-2015-2929 | High | 7.5 | 2020-01-24 | The Hidden Service (HS) client implementation in Tor before 0.2.4.27, 0.2.5.x before 0.2.5.12, and 0.2.6.x before 0.2.6.7 allows remote servers to cause a deni… |
CVE-2015-2928 | High | 7.5 | 2020-01-24 | The Hidden Service (HS) server implementation in Tor before 0.2.4.27, 0.2.5.x before 0.2.5.12, and 0.2.6.x before 0.2.6.7 allows remote attackers to cause a de… |
CVE-2015-2689 | High | 7.5 | 2020-01-24 | Tor before 0.2.4.26 and 0.2.5.x before 0.2.5.11 does not properly handle pending-connection resolve states during periods of high DNS load, which allows remote… |
CVE-2015-2688 | High | 7.5 | 2020-01-24 | buf_pullup in Tor before 0.2.4.26 and 0.2.5.x before 0.2.5.11 does not properly handle unexpected arrival times of buffers with invalid layouts, which allows r… |
CVE-2019-13075 | Medium | 5.3 | 2019-06-30 | Tor Browser through 8.5.3 has an information exposure vulnerability. It allows remote attackers to detect the browser's language via vectors involving an IFRAM… |
CVE-2019-12383 | Medium | 4.3 | 2019-05-28 | Tor Browser before 8.0.1 has an information exposure vulnerability. It allows remote attackers to detect the browser's UI locale by measuring a button width, e… |
CVE-2019-8955 | High | 7.5 | 2019-02-21 | In Tor before 0.3.3.12, 0.3.4.x before 0.3.4.11, 0.3.5.x before 0.3.5.8, and 0.4.x before 0.4.0.2-alpha, remote denial of service against Tor clients and relay… |
CVE-2017-16639 | Medium | 4.3 | 2018-09-14 | Tor Browser on Windows before 8.0 allows remote attackers to bypass the intended anonymity feature and discover a client IP address, a different vulnerability… |
CVE-2018-16983 | Critical | 9.8 | 2018-09-13 | NoScript Classic before 5.1.8.7, as used in Tor Browser 7.x and other products, allows attackers to bypass script blocking via the text/html;/json Content-Type… |
CVE-2016-9079 | High | 7.5 | 2018-06-11 | A use-after-free vulnerability in SVG Animation has been discovered. An exploit built on this vulnerability has been discovered in the wild targeting Firefox a… |
CVE-2018-0491 | High | 7.5 | 2018-03-05 | A use-after-free issue was discovered in Tor 0.3.2.x before 0.3.2.10. It allows remote attackers to cause a denial of service (relay crash) because the KIST im… |
CVE-2018-0490 | High | 7.5 | 2018-03-05 | An issue was discovered in Tor before 0.2.9.15, 0.3.1.x before 0.3.1.10, and 0.3.2.x before 0.3.2.10. The directory-authority protocol-list subprotocol impleme… |
CVE-2016-1254 | High | 7.5 | 2017-12-05 | Tor before 0.2.8.12 might allow remote attackers to cause a denial of service (client crash) via a crafted hidden service descriptor. |
CVE-2017-16541 | Medium | 6.5 | 2017-11-04 | Tor Browser before 7.0.9 on macOS and Linux allows remote attackers to bypass the intended anonymity feature and discover a client IP address via vectors invol… |
CVE-2017-0380 | Medium | 5.9 | 2017-09-18 | The rend_service_intro_established function in or/rendservice.c in Tor before 0.2.8.15, 0.2.9.x before 0.2.9.12, 0.3.0.x before 0.3.0.11, 0.3.1.x before 0.3.1… |
CVE-2017-0377 | High | 7.5 | 2017-07-02 | Tor 0.3.x before 0.3.0.9 has a guard-selection algorithm that only considers the exit relay (not the exit relay's family), which might allow remote attackers t… |
CVE-2017-0376 | High | 7.5 | 2017-06-09 | The hidden-service feature in Tor before 0.3.0.8 allows a denial of service (assertion failure and daemon exit) in the connection_edge_process_relay_cell funct… |
CVE-2017-0375 | High | 7.5 | 2017-06-09 | The hidden-service feature in Tor before 0.3.0.8 allows a denial of service (assertion failure and daemon exit) in the relay_send_end_cell_from_edge_ function… |
CVE-2016-8860 | High | 7.5 | 2017-01-04 | Tor before 0.2.8.9 and 0.2.9.x before 0.2.9.4-alpha had internal functions that were entitled to expect that buf_t data had NUL termination, but the implementa… |
CVE-2014-5117 | | | 2014-07-30 | Tor before 0.2.4.23 and 0.2.5 before 0.2.5.6-alpha maintains a circuit after an inbound RELAY_EARLY cell is received by a client, which makes it easier for rem… |
CVE-2012-2250 | | | 2014-02-03 | Tor before 0.2.3.24-rc allows remote attackers to cause a denial of service (assertion failure and daemon exit) by performing link protocol negotiation incorre… |
CVE-2012-2249 | | | 2014-02-03 | Tor before 0.2.3.23-rc allows remote attackers to cause a denial of service (assertion failure and daemon exit) via a renegotiation attempt that occurs after t… |
CVE-2013-7295 | | | 2014-01-17 | Tor before 0.2.4.20, when OpenSSL 1.x is used in conjunction with a certain HardwareAccel setting on Intel Sandy Bridge and Ivy Bridge platforms, does not prop… |
CVE-2012-5573 | | | 2013-01-01 | The connection_edge_process_relay_cell function in or/relay.c in Tor before 0.2.3.25 maintains circuits even if an unexpected SENDME cell arrives, which might… |
CVE-2012-4922 | | | 2012-09-14 | The tor_timegm function in common/util.c in Tor before 0.2.2.39, and 0.2.3.x before 0.2.3.22-rc, does not properly validate time values, which allows remote at… |
CVE-2012-4419 | | | 2012-09-14 | The compare_tor_addr_to_addr_policy function in or/policies.c in Tor before 0.2.2.39, and 0.2.3.x before 0.2.3.21-rc, allows remote attackers to cause a denial… |