Adobe Connect XXE Remote File Read Vulnerability (CVE-2026-121890)
CVE-2026-121890 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 lead to arbitrary file system read. A low-privileged 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.
Vulnerability Analysis
CVE-2026-121890 is exploitable 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 have a high impact on confidentiality, with no impact on integrity and availability.
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-2026-121890 has been classified to as a XXE vulnerability or weakness.
Products Associated with CVE-2026-121890
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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.