Adobe Connect: Incorrect Authorization leading to privilege escalation
Summary
Adobe Connect contains an Incorrect Authorization flaw (CWE-863) that can lead to privilege escalation. According to the CVE record, an unauthenticated attacker on the network can exploit it without user interaction, and the scope changes, with high impact on confidentiality and integrity. Adobe is not aware of any exploitation in the wild.
Affected
- Adobe Connect 12.12 and earlier on Windows (per APSB26-191)
- CVE record branches: 0 to 12.8, 12.9, 12.10, 12.11 and 12.12
- Desktop client: Unknown.
Fixed in
- Adobe Connect 12.8.a (for 12.8 branch)
- Adobe Connect 12.9.a (for 12.9 branch)
- Adobe Connect 12.10.f (for 12.10 branch)
- Adobe Connect 12.11.i (for 12.11 branch)
- Adobe Connect 12.12.a (for 12.12 branch)
Workaround
- Unknown. No vendor workaround found.
- Interim measure (not from the vendor): restrict network access to Connect servers to trusted networks until patched.
Exploitation
- Adobe is not aware of any exploits in the wild.
- No public proof of concept found in the research. This is not an exhaustive check.
Our recommendation
- Update Adobe Connect to the fixed version for your branch as listed in APSB26-191, prioritising internet-exposed servers.
- Check whether the Connect server is self-hosted or run by a third party, and whether it is reachable from the internet.
- Review administrator and role assignments for unexpected changes.
- Monitor for unusual privilege changes and access to sensitive resources until patched.
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-2026-121352 www.cve.org
- ZDI November 2026 Security Update Review www.zerodayinitiative.com
- OffSeq Radar: CVE-2026-121352 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, 23:21.
Original description (NVD)
Adobe Connect is affected by an Incorrect Authorization vulnerability that could result in privilege escalation. An attacker could exploit this vulnerability to gain unauthorized access to sensitive resources. 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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