{"identifier":"CVE-2026-27303","cve":{"id":"CVE-2026-27303","description":"Adobe Connect versions 2025.3, 12.10 and earlier are affected by a Deserialization of Untrusted Data vulnerability that could result in arbitrary code execution in the context of the current user. Exploitation of this issue requires user interaction in that a victim must visit a maliciously crafted URL or interact with a compromised web page. Scope is changed.","published":"2026-04-14T18:16:56.633000+00:00","modified":"2026-10-26T21:10:00.170000+00:00","status":"Analyzed","score":9.6,"severity":"CRITICAL","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H","cvss_version":"3.1","affected":[{"criteria":"cpe:2.3:a:adobe:connect:*:*:*:*:*:-:*:*","versionStartIncluding":"","versionStartExcluding":"","versionEndIncluding":"","versionEndExcluding":"12.11"},{"criteria":"cpe:2.3:a:adobe:connect_desktop_application:*:*:*:*:*:macos:*:*","versionStartIncluding":"","versionStartExcluding":"","versionEndIncluding":"2025.3","versionEndExcluding":""},{"criteria":"cpe:2.3:a:adobe:connect_desktop_application:*:*:*:*:*:windows:*:*","versionStartIncluding":"","versionStartExcluding":"","versionEndIncluding":"","versionEndExcluding":"2025.9.15"}],"weaknesses":["CWE-502"],"references":[{"url":"https://helpx.adobe.com/security/products/connect/apsb26-37.html","source":"psirt@adobe.com","tags":["Vendor Advisory"]}],"kev":null,"kev_checked":true,"metrics":{"cvssMetricV31":[{"source":"psirt@adobe.com","type":"Secondary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H","baseScore":9.6,"baseSeverity":"CRITICAL","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"REQUIRED","scope":"CHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"HIGH"},"exploitabilityScore":2.8,"impactScore":6.0},{"source":"nvd@nist.gov","type":"Primary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H","baseScore":9.6,"baseSeverity":"CRITICAL","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"REQUIRED","scope":"CHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"HIGH"},"exploitabilityScore":2.8,"impactScore":6.0}],"ssvcV203":[{"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0","ssvcData":{"timestamp":"2026-04-14T00:00:00+00:00","id":"CVE-2026-27303","options":[{"exploitation":"none"},{"automatable":"no"},{"technicalImpact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}}]},"configurations":[{"operator":"AND","nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:adobe:connect:*:*:*:*:*:-:*:*","versionEndExcluding":"12.11","matchCriteriaId":"4A1D88E9-612C-49B1-8521-F2258D4D74CA"}]},{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":false,"criteria":"cpe:2.3:o:apple:macos:-:*:*:*:*:*:*:*","matchCriteriaId":"387021A0-AF36-463C-A605-32EA7DAC172E"},{"vulnerable":false,"criteria":"cpe:2.3:o:microsoft:windows:-:*:*:*:*:*:*:*","matchCriteriaId":"A2572D17-1DE6-457B-99CC-64AFD54487EA"}]}]},{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:adobe:connect_desktop_application:*:*:*:*:*:macos:*:*","versionEndIncluding":"2025.3","matchCriteriaId":"185BF6E9-82FC-45E0-A64E-03FB923F34AD"},{"vulnerable":true,"criteria":"cpe:2.3:a:adobe:connect_desktop_application:*:*:*:*:*:windows:*:*","versionEndExcluding":"2025.9.15","matchCriteriaId":"783AAAA9-E68B-43E3-86A3-5227E27392A5"}]}]}],"source":"nvd","retrieved_at":"2026-10-28T10:19:04.526787+00:00","exploited":false,"kev_stale":false,"products":["adobe / connect","adobe / connect desktop application"],"priority":{"label":"Critical technical severity","reasons":["CVSS is at least 9.0; exploitation is not established by severity alone."]},"epss":{"probability":0.00613,"percentile":0.49264,"date":"2026-10-29","stale":false},"version_assessment":null},"news":[],"campaigns":[],"domains":[{"domain":"helpx.adobe.com","source_url":"https://helpx.adobe.com/security/products/connect/apsb26-37.html","investigate_url":"https://investigate.aeglixmind.com/#helpx.adobe.com"}],"arsenal_url":"https://arsenal.aeglixmind.com/?cve=CVE-2026-27303","catalog_url":"https://cves.aeglixmind.com/cve/CVE-2026-27303","research_url":"https://investigate.aeglixmind.com/research/cve/CVE-2026-27303","coverage":{"news_candidates_checked":0,"campaign_candidates_checked":0,"bounded":false,"notice":"Exact CVE mentions in stored public excerpts and reviewed campaign content only. A mention is not proof of exploitation, attribution or tool suitability. Missing matches do not establish absence."}}