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CVE-2026-34689 – Arbitrary File System Read via Path Traversal – Adobe Connect ≤12.11 / Android App

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Summary

CVE-2026-34689 is a path traversal (CWE-22) vulnerability in Adobe Connect that allows an unauthenticated, remote attacker to read arbitrary files on the underlying file system. The flaw affects Adobe Connect server versions 12.11 and earlier, as well as the Adobe Connect Android mobile app versions 4.4 and earlier. It carries a High severity rating (CVSS 3.1 base score 8.6) and requires no user interaction to exploit.

Technical details

  • Root cause: Improper limitation of a pathname to a restricted directory (CWE-22), allowing input that specifies a file path to escape the intended base directory.
  • Trigger conditions: An attacker sends a crafted request containing directory traversal sequences to the vulnerable Adobe Connect component; no authentication or privileges are required.
  • Attack vector: Network-based (AV:N), low attack complexity (AC:L), no privileges required (PR:N), no user interaction (UI:N).
  • Impact: Successful exploitation results in disclosure of sensitive files outside the application’s intended access scope (high confidentiality impact); the vulnerability does not affect integrity or availability. The CVSS scope is marked as changed (S:C), indicating the impact can extend beyond the vulnerable component itself.

Affected software

  • Adobe Connect: versions 0 through 12.11 (fixed in 12.11.1 and 12.12)
  • Adobe Connect Android Mobile App: versions 0 through 4.4 (fixed in 4.5)

Severity

  • CVSS v3.1 Base Score: 8.6 (High)
  • Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N

Mitigation and recommended actions

  • Immediate: Upgrade Adobe Connect server to version 12.11.1 or 12.12, and upgrade the Adobe Connect Android mobile app to version 4.5 or later, as published in Adobe’s security bulletin.
  • If immediate patching is not possible: Restrict network access to Adobe Connect management and application interfaces to trusted networks only, and monitor web server/application logs for requests containing directory traversal sequences targeting the Adobe Connect endpoints.

References

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