connect desktop application vulnerabilities and fixes

Recent CVEs affecting connect desktop application, with upgrade or downgrade steps. 6 tracked.

Also searched as: connectdesktopapplication.

connect desktop application has 6 tracked vulnerabilities, 5 critical. A fixed release or vendor patch exists for 6. Most recent: 2026-05-12. Highest priority: CVE-2026-27303 (score 46/100).

CVE-2026-27303 CRITICAL 9.6 UPGRADE UPGRADE Adobe Connect versions 2025.3, 12.10 and earlier are affected by a Deserialization of Untrusted Data vulnerabi
CVE-2026-27243 CRITICAL 9.3 UPGRADE UPGRADE Adobe Connect versions 2025.3, 12.10 and earlier are affected by a reflected Cross-Site Scripting (XSS) vulner
CVE-2026-27245 CRITICAL 9.3 UPGRADE UPGRADE Adobe Connect versions 2025.3, 12.10 and earlier are affected by a reflected Cross-Site Scripting (XSS) vulner
CVE-2026-21331 MEDIUM 6.1 UPGRADE UPGRADE Adobe Connect versions 2025.3, 12.10 and earlier are affected by a reflected Cross-Site Scripting (XSS) vulner
CVE-2026-34659 CRITICAL 9.6 UPGRADE DOWNGRADE Adobe Connect versions 2025.9.15, 2025.8.157 and earlier are affected by a Deserialization of Untrusted Data v
CVE-2026-34660 CRITICAL 9.3 UPGRADE UPGRADE Adobe Connect versions 2025.9.15, 2025.8.157 and earlier are affected by an Incorrect Authorization vulnerabil

FAQ

How do I fix connect desktop application vulnerabilities?

Open the CVE for your version, check the affected range, then follow the listed action: upgrade to the fixed release, or downgrade or mitigate if no fix exists yet. Commands for each OS are shown on every CVE page.

Is connect desktop application being exploited right now?

None of the tracked connect desktop application CVEs are on the CISA Known Exploited Vulnerabilities list at the moment. This is checked every 20 minutes.

Which connect desktop application CVE should I patch first?

CVE-2026-27303 currently ranks highest (46/100): Adobe Connect versions 2025.3, 12.10 and earlier are affected by a Deserialization of Untrusted Data vulnerabi.

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