{"id":"CVE-2026-27221","aliases":["EUVD-2026-10901","GHSA-99cf-x4r7-cfg6"],"status":"published","title":"Acrobat Reader | Improper Certificate Validation (CWE-295)","description":"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 to spoof the identity of a signer. Exploitation of this issue requires user interaction.","severity":{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-09","score":0.00121,"percentile":0.0189,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-295"],"published":"2026-03-10T21:41:36Z","modified":"2026-08-28T00:17:05Z","products":[{"vendor":"adobe","product":"acrobat"},{"vendor":"adobe","product":"acrobat 2024"},{"vendor":"adobe","product":"acrobat dc"},{"vendor":"adobe","product":"acrobat reader dc"},{"vendor":"adobe","product":"acrobat_dc"},{"vendor":"adobe","product":"acrobat_reader_dc"}],"references":[{"url":"https://helpx.adobe.com/security/products/acrobat/apsb26-26.html","tags":["vendor-advisory","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-27221"},{"url":"https://github.com/advisories/GHSA-99cf-x4r7-cfg6"}],"sources":{"cve":[{"id":"CVE-2026-27221","title":"Acrobat Reader | Improper Certificate Validation (CWE-295)","description":"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 to spoof the identity of a signer. Exploitation of this issue requires user interaction.","status":"published","published":"2026-03-10T21:41:36.952Z","modified":"2026-08-27T22:09:29.99Z","cvss":[{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N","level":"medium","assessor":"cna"}],"cwes":["CWE-295"],"updated_at":"2026-11-02T14:19:49.199185Z"}],"euvd":[{"id":"EUVD-2026-10901","description":"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 to spoof the identity of a signer. Exploitation of this issue requires user interaction.","status":"published","published":"2026-03-10T21:41:36Z","modified":"2026-08-27T22:09:29Z","cvss":[{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N","level":"medium"}],"updated_at":"2026-11-02T18:01:25.95978Z"}],"ghsa":[{"id":"GHSA-99cf-x4r7-cfg6","title":"Acrobat Reader versions 24.001.30307, 24.001.30308, 25.001.21265 and earlier are affected by an...","description":"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 to spoof the identity of a signer. Exploitation of this issue requires user interaction.","status":"published","published":"2026-03-11T00:31:32Z","modified":"2026-03-11T00:31:33Z","cvss":[{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N","level":"medium"}],"cwes":["CWE-295"],"updated_at":"2026-11-02T15:06:33.229996Z"}],"nvd":[{"id":"CVE-2026-27221","description":"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 to spoof the identity of a signer. Exploitation of this issue requires user interaction.","status":"published","published":"2026-03-10T22:16:18.09Z","modified":"2026-08-28T00:17:05.167Z","cvss":[{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N","level":"medium","assessor":"secondary"}],"cwes":["CWE-295"],"updated_at":"2026-11-02T14:12:08.98071Z"}]}}