CVE-2026-121887 is a vulnerability in Adobe Connect
Published on November 10, 2026
Adobe Connect | Improper Restriction of XML External Entity Reference ('XXE') (CWE-611)
Adobe Connect is affected by an Improper Restriction of XML External Entity Reference ('XXE') 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.
Vulnerability Analysis
CVE-2026-121887 can be exploited with network access, and requires small amount of user privileges. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to be critical as this vulnerability has a high impact to the confidentiality, integrity and availability of this component.
Weakness Type
What is a XXE Vulnerability?
The software processes an XML document that can contain XML entities with URIs that resolve to documents outside of the intended sphere of control, causing the product to embed incorrect documents into its output.
CVE-2026-121887 has been classified to as a XXE vulnerability or weakness.
Products Associated with CVE-2026-121887
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Affected Versions
Adobe Connect:- Before and including 12.8 is affected.
- Version 12.8.a is unaffected.
- Before and including 12.9 is affected.
- Version 12.9.a is unaffected.
- Before and including 12.10 is affected.
- Version 12.10.f is unaffected.
- Before and including 12.11 is affected.
- Version 12.11.i is unaffected.
- Before and including 12.12 is affected.
- Version 12.12.a is unaffected.
Exploit Probability
EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.