{"id":"CVE-2026-94054","title":"Exim before 4.100.1, when Proxy-Protocol is used with an attacker-controlled proxy, has an out-of-bounds write.","summary":"Exim before 4.100.1, when Proxy-Protocol is used with an attacker-controlled proxy, has an out-of-bounds write.","severity":"high","cvss":7,"cvssVector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:H/A:L","cwe":["CWE-787"],"vendor":"exim","product":"exim","affected":["exim < 4.100.1"],"patched":["exim 4.100.1"],"published":"2026-09-19","updated":"2026-09-24","sourceUpdated":"2026-09-24T20:47:34.840","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-94054","references":[{"url":"https://lists.exim.org/lurker/message/20260918.121220.0f87338e.en.html","label":"cve@mitre.org"}],"tags":["nvd","cve.org"],"epss":0.00344,"epssPercentile":0.25143,"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"partial","timestamp":"2026-09-22T16:06:57.411463Z"},"ingestedAt":"2026-09-19T23:10:34.248Z","slug":"CVE-2026-94054","body":"## Overview\n\nExim before 4.100.1, when Proxy-Protocol is used with an attacker-controlled proxy, has an out-of-bounds write.\n\n## Affected\n\n- `exim < 4.100.1`\n\n## Remediation\n\nUpgrade past the affected range:\n\n- `exim 4.100.1`","depth":"twilight","depthScore":39,"depthScoreParts":{"impact":38.5,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}