Adobe Connect: Code injection allows arbitrary code execution
Summary
Adobe Connect contains a code injection vulnerability (CWE-94) that can lead to arbitrary code execution in the context of the current user. An attacker with a low-privileged account who can reach the server over the network can exploit it without user interaction, and the impact can extend beyond the vulnerable component (scope changed). Adobe rates the issue critical with a CVSS 3.1 base score of 9.9.
Affected
- Adobe Connect 12.12 and earlier (Windows)
- CNA record: versions 0 to 12.8, 0 to 12.9, 0 to 12.10, 0 to 12.11 and 0 to 12.12 are affected
Fixed in
- Adobe Connect 12.12.a (Windows)
- Adobe Connect 12.11.i (Windows)
- Adobe Connect 12.10.f (Windows)
- Adobe Connect 12.9.a (Windows)
- Adobe Connect 12.8.a (Windows)
Workaround
Unknown.
Exploitation
- Adobe is not aware of any exploits in the wild for the issues in APSB26-191, including this CVE.
- No public proof of concept found so far. This is not confirmed absence.
Our recommendation
- Confirm the installed Adobe Connect version and apply the fixed build from APSB26-191 as soon as possible.
- Until patched, restrict access to the Connect server to required users, place it behind VPN or an access gateway if it is internet-facing, and disable unused or stale accounts, including guest accounts.
- Review web server and application logs for unusual requests and monitor for signs of code injection attempts.
Public exploits
PoC-in-GitHub, Metasploit and Exploit-DB list nothing for this CVE.
Research sources
- Adobe Security Bulletin APSB26-191 www.adobe.com
- Strix CVE-2026-121892 details www.strix.ai
- OffSeq Radar CVE-2026-121892 radar.offseq.com
- Zero Day Initiative November 2026 security update review www.zerodayinitiative.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, 23:25.
Original description (NVD)
Adobe Connect is affected by an Improper Control of Generation of Code ('Code Injection') vulnerability that could result in arbitrary code execution in the context of the current user. A low-privileged attacker could exploit this vulnerability to execute arbitrary code. 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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