Quick answers
- Is CVE-2026-121887 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-121887 being exploited in the wild.
- How severe is CVE-2026-121887?
- Critical severity, with a CVSS score of 9.9, published 10 November 2026.
- Which products and versions are affected?
- Adobe Connect 12.12 and earlier.
- Is there a fix for CVE-2026-121887?
- Yes: fixed in 12.12.a, 12.11.i, 12.10.f, 12.9.a, 12.8.a. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
- How is CVE-2026-121887 attacked?
- It is attacked over the network.
- Am I affected by CVE-2026-121887?
- Check whether you run Adobe Connect at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.
How to fix
- Fixed in: 12.12.a, 12.11.i, 12.10.f, 12.9.a, 12.8.a
Technical details
An Improper Restriction of XML External Entity Reference (CWE-611) in Adobe Connect allows authenticated attackers to execute arbitrary code in the context of the application. The vulnerability requires low-privilege credentials but does not require user interaction, and exploits can expand scope to affect other users and systems. A patch is available in Adobe Connect 12.12.a and later versions.
Affected products
- Adobe Connect 12.12 and earlier
Timeline
- 2026-11-10: disclosed