Adobe Connect: Path traversal allows arbitrary file read
Summary
Adobe Connect contains a path traversal flaw (CWE-22) that allows an attacker to read files and directories outside the intended access scope. The CVE description covers only file system read, while Adobe's data also lists code execution as an impact. No user interaction is required, but the attacker needs a low-privileged account on the server. The CVSS 3.1 base score is 9.9 (critical) because the scope changes and confidentiality and integrity impacts are high.
Affected
- Adobe Connect 12.12 and earlier (Windows, per APSB26-191)
- CVE record: affected from 0 to 12.8, 12.9, 12.10, 12.11 and 12.12 branches
Fixed in
- Per APSB26-191 and the CVE record, unaffected from 12.8.a, 12.9.a, 12.10.f, 12.11.i and 12.12.a
- Confirm the fixed build for each CVE in the advisory before rollout
Workaround
Unknown.
Exploitation
- Adobe is not aware of any exploits in the wild for the issues in APSB26-191.
- No public proof of concept found.
Our recommendation
- Check whether your Adobe Connect server is internet-facing or self-hosted and which version it runs.
- Update to the fixed build for your branch as listed in APSB26-191 (12.12.a, 12.11.i, 12.10.f, 12.9.a or 12.8.a).
- Until patched, restrict external access and remove unused accounts, and review logs for unusual file access.
- Treat this as high priority for servers on 12.11 or earlier.
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-2026-121906 www.cve.org
- Strix CVE-2026-121906 www.strix.ai
- OffSeq Radar CVE-2026-121906 radar.offseq.com
- ZDI 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, 23:23.
Original description (NVD)
Adobe Connect is affected by an Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') vulnerability that could lead to arbitrary file system read. An attacker could exploit this vulnerability to access sensitive files and directories outside the intended access scope. 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.
Affected? We can help.
We check whether your systems are affected, install updates and close the gap – continuously with the System Health Checker if you wish.