Adobe InCopy <20.0: Integer Underflow Arbitrary Code Exec
CVE-2025-21156 Published on February 11, 2025
InCopy | Integer Underflow (Wrap or Wraparound) (CWE-191)
InCopy versions 20.0, 19.5.1 and earlier are affected by an Integer Underflow (Wrap or Wraparound) vulnerability that could result in arbitrary code execution in the context of the current user. Exploitation of this issue requires user interaction in that a victim must open a malicious file.
Vulnerability Analysis
CVE-2025-21156 is exploitable with local system access, requires user interaction. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to be very high.
Weakness Type
What is an Integer underflow Vulnerability?
The product subtracts one value from another, such that the result is less than the minimum allowable integer value, which produces a value that is not equal to the correct result. This can happen in signed and unsigned cases.
CVE-2025-21156 has been classified to as an Integer underflow vulnerability or weakness.
Products Associated with CVE-2025-21156
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Affected Versions
Adobe InCopy:- Before and including 19.5.1 is affected.
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.