Adobe Connect: Mehrere Schwachstellen
WID-SEC-2026-1109 · first 15.04.2026 · updated 12.08.2026 · CVSS 9,6
What it is about
Adobe Connect ist eine Software zur Erstellung von Informationen, Präsentationen, Online-Schulungsunterlagen, Webkonferenzen, Lernmodulen und für Benutzer-Desktop-Sharing. Ein entfernter, anonymer Angreifer kann mehrere Schwachstellen in Adobe Connect ausnutzen, um beliebigen Programmcode auszuführen oder Cross-Site-Scripting-Angriffe durchzuführen.
Under what conditions?
Over the network and without logging in. This is the most dangerous combination: attackers can scan reachable devices automatically.
What can happen in the worst case
An attacker could use the vulnerability to
- beliebigen Programmcode auszuführen oder Cross-Site-Scripting-Angriffe durchzuführen
Am I affected?
Affected according to the BSI:
- Adobe Connect <12.11
- Adobe Connect Desktop Application <2025.9
The installed version is usually shown under “Help → About” or in the device’s admin interface.
What helps?
Update to at least:
- Adobe Connect 12.11
- Adobe Connect Desktop Application 2025.9
Is the vulnerability already being exploited?
None of the CVEs is in the CISA catalogue of exploited vulnerabilities. That does not mean there are no attacks, only that none are documented.
Information and sources
CVE: CVE-2026-21331, CVE-2026-27243, CVE-2026-27245, CVE-2026-27246, CVE-2026-27302, CVE-2026-27303, CVE-2026-34614, CVE-2026-34615, CVE-2026-34617
Source: BSI warning and information service (CERT-Bund); CISA. The assessment of the conditions is my reading of the BSI text; the external pages are in their original language.