{"id":"CVE-2016-2850","aliases":["EUVD-2016-3923","GHSA-q2v2-6g2j-qv56"],"status":"published","title":"Botan 1.11.x before 1.11.29 does not enforce TLS policy for (1) signature algorithms and (2) ECC...","description":"Botan 1.11.x before 1.11.29 does not enforce TLS policy for (1) signature algorithms and (2) ECC curves, which allows remote attackers to conduct downgrade attacks via unspecified vectors.","severity":{"version":"3.0","score":7.5,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-08","score":0.02137,"percentile":0.82136,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-20"],"published":"2016-05-13T14:00:00Z","modified":"2026-10-24T10:31:02Z","products":[{"vendor":"botan_project","product":"botan"},{"vendor":"fedoraproject","product":"fedora"}],"references":[{"url":"http://marc.info/?l=botan-devel\u0026m=145852488622892\u0026w=2","tags":["mailing-list","x_refsource_MLIST","x_transferred","Vendor Advisory","advisory"]},{"url":"http://lists.fedoraproject.org/pipermail/package-announce/2016-May/183669.html","tags":["vendor-advisory","x_refsource_FEDORA","x_transferred","web"]},{"url":"https://security.gentoo.org/glsa/201701-23","tags":["vendor-advisory","x_refsource_GENTOO","x_transferred","advisory"]},{"url":"http://botan.randombit.net/security.html","tags":["x_refsource_CONFIRM","x_transferred","Vendor Advisory","advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2016-2850"},{"url":"https://github.com/advisories/GHSA-q2v2-6g2j-qv56"}],"sources":{"cve":[{"id":"CVE-2016-2850","description":"Botan 1.11.x before 1.11.29 does not enforce TLS policy for (1) signature algorithms and (2) ECC curves, which allows remote attackers to conduct downgrade attacks via unspecified vectors.","status":"published","published":"2016-05-13T14:00:00Z","modified":"2024-08-05T23:32:21.226Z","updated_at":"2026-11-02T14:33:33.424551Z"}],"euvd":[{"id":"EUVD-2016-3923","description":"Botan 1.11.x before 1.11.29 does not enforce TLS policy for (1) signature algorithms and (2) ECC curves, which allows remote attackers to conduct downgrade attacks via unspecified vectors.","status":"published","published":"2016-05-13T14:00:00Z","modified":"2024-08-05T23:32:21Z","updated_at":"2026-11-03T02:22:52.199729Z"}],"ghsa":[{"id":"GHSA-q2v2-6g2j-qv56","title":"Botan 1.11.x before 1.11.29 does not enforce TLS policy for (1) signature algorithms and (2) ECC...","description":"Botan 1.11.x before 1.11.29 does not enforce TLS policy for (1) signature algorithms and (2) ECC curves, which allows remote attackers to conduct downgrade attacks via unspecified vectors.","status":"published","published":"2022-05-17T02:37:34Z","modified":"2023-01-27T05:05:52Z","cvss":[{"version":"3.0","score":7.5,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","level":"high"}],"cwes":["CWE-20"],"updated_at":"2026-11-02T14:42:47.147954Z"}],"nvd":[{"id":"CVE-2016-2850","description":"Botan 1.11.x before 1.11.29 does not enforce TLS policy for (1) signature algorithms and (2) ECC curves, which allows remote attackers to conduct downgrade attacks via unspecified vectors.","status":"published","published":"2016-05-13T14:59:11.743Z","modified":"2026-06-17T00:44:35.467Z","cvss":[{"version":"3.0","score":7.5,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","level":"high","assessor":"primary"},{"version":"2.0","score":5,"vector":"AV:N/AC:L/Au:N/C:N/I:P/A:N","level":"medium","assessor":"primary"}],"cwes":["CWE-20"],"updated_at":"2026-11-02T14:03:25.366449Z"}],"osv":[{"id":"CVE-2016-2850","description":"Botan 1.11.x before 1.11.29 does not enforce TLS policy for (1) signature algorithms and (2) ECC curves, which allows remote attackers to conduct downgrade attacks via unspecified vectors.","status":"published","published":"2016-05-13T14:59:11.743Z","modified":"2026-10-24T10:31:02.138589442Z","cvss":[{"version":"3.0","score":7.5,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","level":"high"}],"updated_at":"2026-11-02T15:44:02.114472Z"}]}}