{"id":"CVE-2025-68973","title":"In GnuPG before 2.4.9, armor_filter in g10/armor.c has two increments of an index variable where one is intended, leading to an out-of-bounds write for crafted input","summary":"In GnuPG before 2.4.9, armor_filter in g10/armor.c has two increments of an index variable where one is intended, leading to an out-of-bounds write for crafted input. (For ExtendedLTS, 2.2.51 and later are fixed versions.)","severity":"high","cvss":7.8,"cvssVector":"CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:N","cwe":["CWE-675","CWE-787"],"vendor":"gnupg","product":"gnupg","affected":["gnupg <= 2.4.8"],"published":"2025-12-28","updated":"2026-10-13","sourceUpdated":"2026-10-13T09:10:00.323","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2025-68973","references":[{"url":"https://github.com/gpg/gnupg/blob/ff30683418695f5d2cc9e6cf8c9418e09378ebe4/g10/armor.c#L1305-L1306","label":"cve@mitre.org"},{"url":"https://github.com/gpg/gnupg/commit/115d138ba599328005c5321c0ef9f00355838ca9","label":"cve@mitre.org"},{"url":"https://github.com/gpg/gnupg/compare/gnupg-2.2.50...gnupg-2.2.51","label":"cve@mitre.org"},{"url":"https://gpg.fail/memcpy","label":"cve@mitre.org"},{"url":"https://media.ccc.de/v/39c3-to-sign-or-not-to-sign-practical-vulnerabilities-i","label":"cve@mitre.org"},{"url":"https://news.ycombinator.com/item?id=46403200","label":"cve@mitre.org"},{"url":"https://www.openwall.com/lists/oss-security/2025/12/28/5","label":"cve@mitre.org"},{"url":"http://www.openwall.com/lists/oss-security/2025/12/29/11","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://lists.debian.org/debian-lts-announce/2026/01/msg00008.html","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://gpg.fail/memcpy","label":"134c704f-9b21-4f2e-91b3-4a467353bcc0"}],"tags":["nvd"],"epss":0.00152,"epssPercentile":0.03821,"ingestedAt":"2026-10-13T09:20:23.167Z","slug":"CVE-2025-68973","body":"## Overview\n\nIn GnuPG before 2.4.9, armor_filter in g10/armor.c has two increments of an index variable where one is intended, leading to an out-of-bounds write for crafted input. (For ExtendedLTS, 2.2.51 and later are fixed versions.)\n\n## Affected\n\n- `gnupg <= 2.4.8`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":43,"depthScoreParts":{"impact":42.9,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}