{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-27221","assignerOrgId":"078d4453-3bcd-4900-85e6-15281da43538","state":"PUBLISHED","assignerShortName":"adobe","dateReserved":"2026-02-18T22:02:41.380Z","datePublished":"2026-03-10T21:41:36.952Z","dateUpdated":"2026-03-11T13:08:15.923Z"},"containers":{"cna":{"affected":[{"defaultStatus":"affected","product":"Acrobat Reader","vendor":"Adobe","versions":[{"lessThanOrEqual":"25.001.21265","status":"affected","version":"0","versionType":"semver"}]}],"datePublic":"2026-03-10T17:00:00.000Z","descriptions":[{"lang":"en","value":"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."}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"LOCAL","availabilityImpact":"NONE","availabilityRequirement":"NOT_DEFINED","baseScore":5.5,"baseSeverity":"MEDIUM","confidentialityImpact":"NONE","confidentialityRequirement":"NOT_DEFINED","environmentalScore":5.5,"environmentalSeverity":"MEDIUM","exploitCodeMaturity":"NOT_DEFINED","integrityImpact":"HIGH","integrityRequirement":"NOT_DEFINED","modifiedAttackComplexity":"LOW","modifiedAttackVector":"LOCAL","modifiedAvailabilityImpact":"NONE","modifiedConfidentialityImpact":"NONE","modifiedIntegrityImpact":"HIGH","modifiedPrivilegesRequired":"NONE","modifiedScope":"UNCHANGED","modifiedUserInteraction":"REQUIRED","privilegesRequired":"NONE","remediationLevel":"NOT_DEFINED","reportConfidence":"NOT_DEFINED","scope":"UNCHANGED","temporalScore":5.5,"temporalSeverity":"MEDIUM","userInteraction":"REQUIRED","vectorString":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N","version":"3.1"},"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}]}],"problemTypes":[{"descriptions":[{"cweId":"CWE-295","description":"Improper Certificate Validation (CWE-295)","lang":"en","type":"CWE"}]}],"providerMetadata":{"orgId":"078d4453-3bcd-4900-85e6-15281da43538","shortName":"adobe","dateUpdated":"2026-03-10T21:41:36.952Z"},"references":[{"tags":["vendor-advisory"],"url":"https://helpx.adobe.com/security/products/acrobat/apsb26-26.html"}],"source":{"discovery":"EXTERNAL"},"title":"Acrobat Reader | Improper Certificate Validation (CWE-295)"},"adp":[{"metrics":[{"other":{"type":"ssvc","content":{"id":"CVE-2026-27221","role":"CISA Coordinator","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"total"}],"version":"2.0.3","timestamp":"2026-03-11T03:57:08.259918Z"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-03-11T13:08:15.923Z"}}]}}