{"id":"CVE-2020-15572","url":"https://www.cyber-defence.io/tools/cve/CVE-2020-15572","generatedAt":"2026-10-27T23:43:46.016Z","title":"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 (NSS), aka TROVE-2020-001.","description":"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 (NSS), aka TROVE-2020-001.","published":"2020-07-15T17:15:11.000Z","lastModified":"2026-06-17T02:56:50.000Z","status":"Modified","sourceIdentifier":"cve@mitre.org","cvss":{"version":"3.1","score":7.5,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},"cwe":["CWE-125"],"affected":["torproject/tor"],"epss":{"score":0.01404,"percentile":0.72369,"date":"2026-10-26","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"high","text":"High impact if exploited, but EPSS currently rates exploitation as unlikely (1.40%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit."},"changes":[],"references":[{"url":"https://blog.torproject.org/new-release-tor-03511-0428-0436-security-fixes","tags":["Release Notes","Vendor Advisory"],"source":"cve@mitre.org"},{"url":"https://gitlab.torproject.org/tpo/core/tor/-/issues/33119","tags":["Vendor Advisory"],"source":"cve@mitre.org"},{"url":"https://trac.torproject.org/projects/tor/wiki/TROVE","tags":["Vendor Advisory"],"source":"cve@mitre.org"},{"url":"https://blog.torproject.org/new-release-tor-03511-0428-0436-security-fixes","tags":["Release Notes","Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://gitlab.torproject.org/tpo/core/tor/-/issues/33119","tags":["Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://trac.torproject.org/projects/tor/wiki/TROVE","tags":["Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2020-15572","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}