Adobe Connect CRLF Injection Enables RCE
CVE-2026-121353 Published on November 10, 2026
Adobe Connect | Improper Neutralization of CRLF Sequences ('CRLF Injection') (CWE-93)
Adobe Connect is affected by an Improper Neutralization of CRLF Sequences ('CRLF Injection') vulnerability that could result in arbitrary code execution in the context of the current user, potentially gaining elevated access or control over the victim's account or session. Exploitation of this issue does not require user interaction. Scope is changed.
Vulnerability Analysis
CVE-2026-121353 can be exploited with network access, and does not require authorization privileges or user interaction. 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 and integrity, and no impact on availability.
Weakness Type
What is a CRLF Injection Vulnerability?
The software uses CRLF (carriage return line feeds) as a special element, e.g. to separate lines or records, but it does not neutralize or incorrectly neutralizes CRLF sequences from inputs.
CVE-2026-121353 has been classified to as a CRLF Injection vulnerability or weakness.
Products Associated with CVE-2026-121353
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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.