{"id":"CVE-2026-27221","title":"Acrobat Reader versions 24.001.30307, 24.001.30308, 25.001.21265 and earlier are affected by an Improper Certificate Validation vulnerability that could result in a Security feature bypass","summary":"Acrobat Reader versions 24.001.30307, 24.001.30308, 25.001.21265 and earlier are affected by an Improper Certificate Validation vulnerability that could result in a Security feature bypass. An attacker could leverage this vulnerability t…","severity":"medium","cvss":5.5,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N","cwe":["CWE-295"],"vendor":"adobe","product":"acrobat_dc","affected":["acrobat_dc < 25.001.21288","acrobat_reader_dc < 25.001.21288","acrobat >= 24.001.20604, < 24.001.30356"],"patched":["acrobat_dc 25.001.21288","acrobat_reader_dc 25.001.21288","acrobat 24.001.30356"],"published":"2026-03-10","updated":"2026-08-28","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-27221","references":[{"url":"https://helpx.adobe.com/security/products/acrobat/apsb26-26.html","label":"psirt@adobe.com"}],"tags":["nvd"],"epss":0.00105,"epssPercentile":0.01224,"ingestedAt":"2026-08-28T13:20:14.971Z","slug":"CVE-2026-27221","body":"## Overview\n\nAcrobat Reader versions 24.001.30307, 24.001.30308, 25.001.21265 and earlier are affected by an Improper Certificate Validation vulnerability that could result in a Security feature bypass. An attacker could leverage this vulnerability to spoof the identity of a signer. Exploitation of this issue requires user interaction.\n\n## Affected\n\n- `acrobat_dc < 25.001.21288`\n- `acrobat_reader_dc < 25.001.21288`\n- `acrobat >= 24.001.20604, < 24.001.30356`\n\n## Remediation\n\nUpgrade past the affected range:\n\n- `acrobat_dc 25.001.21288`\n- `acrobat_reader_dc 25.001.21288`\n- `acrobat 24.001.30356`","depth":"sunlit","depthScore":30,"depthScoreParts":{"impact":30.3,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}