TO
Product
Tor
On CISA KEVExploited in the wild
48
CVEs
1
On KEV
9.3
Max CVSS
0
New 30D
Severity mix
Critical 4High 27Medium 10Low 0
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Add Tor to your stack to get only the CVEs that touch what you run.
| CVE | CVSS | Published | Summary · affected versions |
|---|---|---|---|
| CVE-2016-9079 In wildKEV | 7.5 | Jun 11 | Mozilla Firefox, Firefox ESR, and Thunderbird Use-After-Free Vulnerability Affected: All versions, or not specified |
| CVE-2026-77642 | 9.3 | Aug 20 | tor before 0.4.9.9 was prone to an out-of-bounds write when parsing a consensus or detached signature with unexpected signature digest type Affected: 0.2.8.2-alpha before 0.4.9.9 |
| CVE-2026-44603 | 9.1 | May 7 | Tor before 0.4.9.7 has an out-of-bounds read by one byte via a malformed BEGIN cell, aka TROVE-2026-007 Affected: before 0.4.9.7 |
| CVE-2026-44597 | 9.1 | May 7 | 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 Affected: before 0.4.9.7 |
| CVE-2026-77638 | 9.0 | Aug 20 | Tor before 0.4.9.11 is prone to a race condition where in just the right circumstances a rendezvous point could man-in-the-middle (impersonate) the onion service that the client… Affected: 0.3.5.3-alpha before 0.4.9.11 |
| CVE-2026-77641 | 8.2 | Aug 20 | tor before 0.4.9.9 was prone to a NULL write after free when sending a CONFLUX_SWITCH cell fails Affected: 0.4.8.1-alpha before 0.4.9.9 |
| CVE-2026-77584 | 8.2 | Aug 20 | Tor before 0.4.9.10 did not reject a CONFLUX_LINK cell that arrives on a circuit which already has attached streams Affected: 0.4.8.1-alpha before 0.4.9.10 |
| CVE-2026-77587 | 7.5 | Aug 20 | Tor before 0.4.9.11 is prone to a use-after-free (and potential double free) of a conflux object when a recovery leg revives a conflux set whose last linked leg has already been… Affected: 0.4.8.1-alpha before 0.4.9.11 |
| CVE-2026-44602 | 7.5 | May 7 | Tor before 0.4.9.7 has a NULL pointer dereference when a CERT cell is received out of order, aka TROVE-2026-006 Affected: before 0.4.9.7 |
| CVE-2026-44601 | 7.5 | May 7 | 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 Affected: before 0.4.9.7 |
| CVE-2022-33903 | 7.5 | Jul 17 | Tor 0.4.7.x before 0.4.7.8 allows a denial of service via the wedging of RTT estimation Affected: 0.4.7.1 before 0.4.7.8 |
| CVE-2021-38385 | 7.5 | Aug 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 remote assertion… Affected: before 0.3.5.16; 0.4.0.0 before 0.4.5.10; 0.4.6.0 before 0.4.6.7 |
| CVE-2021-34550 | 7.5 | Jun 29 | An issue was discovered in Tor before 0.4.6.5, aka TROVE-2021-006 Affected: before 0.3.5.15; 0.4.0.0 before 0.4.4.9; 0.4.5.0 before 0.4.5.9; 0.4.6.0 before 0.4.6.5 |
| CVE-2021-34549 | 7.5 | Jun 29 | An issue was discovered in Tor before 0.4.6.5, aka TROVE-2021-005 Affected: before 0.3.5.15; 0.4.0.0 before 0.4.4.9; 0.4.5.0 before 0.4.5.9; 0.4.6.0 before 0.4.6.5 |
| CVE-2021-34548 | 7.5 | Jun 29 | An issue was discovered in Tor before 0.4.6.5, aka TROVE-2021-003 Affected: before 0.3.5.15; 0.4.0.0 before 0.4.4.9; 0.4.5.0 before 0.4.5.9; 0.4.6.0 before 0.4.6.5 |
| CVE-2021-28089 | 7.5 | Mar 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 Affected: before 0.3.5.14; 0.4.4.4 before 0.4.4.8; 0.4.5.0 before 0.4.5.7; 0.4.4.0; 0.4.4.1; 0.4.4.2; +1 more |
| CVE-2020-15572 | 7.5 | Jul 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 Security Services… Affected: before 0.3.5.11; after 0.4.2.0 before 0.4.2.8; after 0.4.3.0 before 0.4.3.6; 0.4.4.0; 0.4.4.1 |
| CVE-2020-10593 | 7.5 | Mar 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 Affected: 0.3.5 before 0.3.5.10; after 0.4.1.0 before 0.4.1.9; after 0.4.2.0 through 0.4.2.7 |
| CVE-2020-10592 | 7.5 | Mar 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-2020-002 Affected: 0.3.5 before 0.3.5.10; after 0.4.1.0 before 0.4.1.9; after 0.4.2.0 through 0.4.2.7 |
| CVE-2015-2929 | 7.5 | Jan 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 denial of service… Affected: before 0.2.4.27; 0.2.5.1 before 0.2.5.12; 0.2.6.1 before 0.2.6.7 |
| CVE-2015-2928 | 7.5 | Jan 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 denial of service… Affected: before 0.2.4.27; 0.2.5.1 before 0.2.5.12; 0.2.6.1 before 0.2.6.7 |
| CVE-2015-2689 | 7.5 | Jan 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 attackers to cause… Affected: before 0.2.4.26; 0.2.5.1 before 0.2.5.11 |
| CVE-2015-2688 | 7.5 | Jan 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 remote attackers to… Affected: before 0.2.4.26; 0.2.5.1 before 0.2.5.11 |
| CVE-2019-8955 | 7.5 | Feb 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 relays can occur via… Affected: before 0.3.3.12; 0.3.4.8 before 0.3.4.11; 0.3.4.0; 0.3.4.1; 0.3.4.2; 0.3.4.3; +13 more |
| CVE-2018-0491 | 7.5 | Mar 5 | A use-after-free issue was discovered in Tor 0.3.2.x before 0.3.2.10 Affected: 0.3.2.0 before 0.3.2.10 |
| CVE-2018-0490 | 7.5 | Mar 5 | 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 Affected: through 0.2.9.14; 0.3.1.7 through 0.3.1.9; 0.3.1.1; 0.3.1.2; 0.3.1.3; 0.3.1.4; +11 more |
| CVE-2016-1254 | 7.5 | Dec 5 | Tor before 0.2.8.12 might allow remote attackers to cause a denial of service (client crash) via a crafted hidden service descriptor Affected: before 0.2.8.12 |
| CVE-2017-0377 | 7.5 | Jul 2 | 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 to defeat intended… Affected: 0.3.0.1; 0.3.0.2; 0.3.0.3; 0.3.0.4; 0.3.0.5; 0.3.0.6; +2 more |
| CVE-2017-0376 | 7.5 | Jun 9 | 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 function via a BEGIN_DIR… Affected: before 0.3.0.8 |
| CVE-2017-0375 | 7.5 | Jun 9 | 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 via a malformed… Affected: before 0.3.0.8 |
| CVE-2016-8860 | 7.5 | Jan 4 | 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 implementation of or/buffers.c… Affected: through 0.2.8.8; 0.2.9.0; 0.2.9.1; 0.2.9.2; 0.2.9.3 |
| CVE-2023-23589 | 6.5 | Jan 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-2022-002 Affected: before 0.4.7.13 |
| CVE-2017-16541 | 6.5 | Nov 4 | 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 involving a crafted web… Affected: before 7.0.9 |
| CVE-2017-0380 | 5.9 | Sep 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 0.3.1.7, and 0.3.2.x… Affected: through 0.2.8.14; 0.2.9.0; 0.2.9.0; 0.2.9.1; 0.2.9.2; 0.2.9.3; +25 more |
| CVE-2021-46702 | 5.5 | Feb 26 | Tor Browser 9.0.7 on Windows 10 build 10586 is vulnerable to information disclosure Affected: 9.0.7 |
| CVE-2026-77640 | 5.3 | Aug 20 | tor before 0.4.9.9 was prone to an infinite loop when decompressing a truncated zlib/gzip stream with done=1 Affected: 0.2.6.1-alpha before 0.4.9.9 |
| CVE-2026-77639 | 5.3 | Aug 20 | Tor before 0.4.9.9 was prone to a compression bomb bypass where an attacker could concatenate many gzip or zlib sub-streams, each just under the per-stream detection threshold, to… Affected: 0.3.1.1-alpha before 0.4.9.9 |
| CVE-2026-44600 | 5.3 | May 7 | 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 Affected: before 0.4.9.7 |
| CVE-2026-44599 | 5.3 | May 7 | Tor before 0.4.9.7 can attempt or accept BEGIN_DIR via conflux legs, aka TROVE-2026-008 Affected: before 0.4.9.7 |
| CVE-2021-28090 | 5.3 | Mar 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 Affected: before 0.3.5.14; 0.4.4.4 before 0.4.4.8; 0.4.5.0 before 0.4.5.7; 0.4.4.0; 0.4.4.1; 0.4.4.2; +1 more |
| CVE-2020-8516 | 5.3 | Feb 2 | 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 make it easier for… Affected: through 0.4.1.8; 0.4.2.0 through 0.4.2.6 |
| CVE-2014-5117 | – | Jul 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 remote attackers to… Affected: through 0.2.4.22; 0.0.2; 0.0.2; 0.0.2; 0.0.2; 0.0.2; +34 more |
| CVE-2012-2250 | – | Feb 3 | 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 incorrectly Affected: through 0.2.3.23; 0.0.2; 0.0.2; 0.0.2; 0.0.2; 0.0.2; +34 more |
| CVE-2012-2249 | – | Feb 3 | 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 the initiation of the… Affected: through 0.2.3.22; 0.0.2; 0.0.2; 0.0.2; 0.0.2; 0.0.2; +34 more |
| CVE-2013-7295 | – | Jan 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 properly generate random… Affected: through 0.2.4.19; 0.2.4.1; 0.2.4.2; 0.2.4.3; 0.2.4.4; 0.2.4.5; +13 more |
| CVE-2012-5573 | – | Jan 1 | 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 allow remote… Affected: through 0.2.3.24; 0.0.2; 0.0.2; 0.0.2; 0.0.2; 0.0.2; +34 more |
| CVE-2012-4922 | – | Sep 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 attackers to cause a… Affected: through 0.2.2.38; 0.0.2; 0.0.2; 0.0.2; 0.0.2; 0.0.2; +34 more |
| CVE-2012-4419 | – | Sep 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 of service… Affected: through 0.2.2.38; 0.0.2; 0.0.2; 0.0.2; 0.0.2; 0.0.2; +34 more |
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