Quick answers
- Is CVE-2026-121890 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-121890 being exploited in the wild.
- How severe is CVE-2026-121890?
- High severity, with a CVSS score of 7.7, published 10 November 2026.
- Which products and versions are affected?
- Adobe Connect 12.12 and earlier.
- Is there a fix for CVE-2026-121890?
- Yes: fixed in Adobe Connect 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-2026-121890 attacked?
- It is attacked over the network, in a web application.
- Am I affected by CVE-2026-121890?
- 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: Adobe Connect 12.12.a, 12.11.i, 12.10.f, 12.9.a, 12.8.a
Technical details
Adobe Connect contains an improper restriction of XML External Entity references (CWE-611) that allows a low-privileged authenticated attacker to read arbitrary files from the server filesystem. The vulnerability requires network access and low privilege credentials but no user interaction. Successful exploitation grants the attacker confidentiality impact through unauthorized file disclosure.
Affected products
- Adobe Connect 12.12 and earlier
Timeline
- 2026-11-10: disclosed