Adobe Connect: Server-Side Request Forgery (SSRF) leading to privilege escalation
Summary
Adobe Connect contains a Server-Side Request Forgery (SSRF) vulnerability, tracked as CVE-2026-121889, that can result in privilege escalation. The attack is possible over the network without authentication and without user interaction, and the scope is changed. The issue is part of Adobe security bulletin APSB26-191, which Adobe rates as Priority 2. Adobe is not aware of any exploits in the wild.
Affected
- Adobe Connect 0 through 12.8 (according to the CVE record)
- Adobe Connect 0 through 12.9 (according to the CVE record)
- Adobe Connect 0 through 12.10 (according to the CVE record)
- Adobe Connect 0 through 12.11 (according to the CVE record)
- Adobe Connect 0 through 12.12 (according to the CVE record)
Platform according to the Adobe bulletin: Windows.
A third-party aggregator reports a broader range up to 12.12; this could not be verified.
Fixed in
- Adobe Connect 12.8.a
- Adobe Connect 12.9.a
- Adobe Connect 12.10.f
- Adobe Connect 12.11.i
- Adobe Connect 12.12.a
The fixed version depends on the installed branch. Confirm in the Adobe advisory APSB26-191.
Workaround
Unknown.
Exploitation
- Adobe is not aware of any exploits in the wild for APSB26-191.
- OffSeq lists this CVE as not known to be exploited.
- No public proof of concept was found. This does not prove that none exists.
Our recommendation
- Check whether a self-hosted Adobe Connect server is in use and which version it runs.
- Check whether the server is reachable from the internet. Internet-facing servers have the highest priority.
- Restrict access to the Connect server until the update is installed.
- Install the fixed version for your branch as listed in APSB26-191.
- Monitor the vendor advisory and logs for unusual outbound requests from the server.
Public exploits
PoC-in-GitHub, Metasploit and Exploit-DB list nothing for this CVE.
Research sources
- Adobe Security Bulletin APSB26-191 www.adobe.com
- CVE Record CVE-2026-121889 www.cve.org
- ZDI: November 2026 Security Update Review www.zerodayinitiative.com
- OffSeq Radar: CVE-2026-121889 radar.offseq.com
Researched and written up in English and German by an AI (Claude by Anthropic) based on NVD, CISA, EPSS and the sources listed. The vendor information is authoritative. Researched on 10 Nov 2026, 23:20.
Original description (NVD)
Adobe Connect is affected by a Server-Side Request Forgery (SSRF) vulnerability that could result in privilege escalation. Exploitation of this issue does not require user interaction. Scope is changed.
NVD references (1)
Sources
The tracker combines official, freely usable data sources – updated continuously:
- NVD (NIST) – CVEs, rating (CVSS), affected products
- CISA KEV – vulnerabilities confirmed by CISA as actively exploited
- CISA Vulnrichment – CISA assessment (SSVC) in the official CVE record
- FIRST EPSS – probability of exploitation
- Microsoft MSRC – Patch Tuesday: vulnerabilities, severity, updates
- PoC-in-GitHub – public proof-of-concept repositories
- Metasploit (Rapid7) – modules of the Metasploit Framework
- Exploit-DB (OffSec) – archive of public exploits (links only)
- Patch days: official vendor pages (linked per vendor) (Vendor patch days)
This product uses data from the NVD API but is not endorsed or certified by the NVD. EPSS data © FIRST.org.
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