ImageMagick <7.1.2-19 MSL Decoder Off-by-One Crash
CVE-2026-40312 Published on April 13, 2026
ImageMagick: Off-by-One in MSL decoder could result in crash
ImageMagick is free and open-source software used for editing and manipulating digital images. In versions below 7.1.2-19, an off by one error in the MSL decoder could result in a crash when a malicous MSL file is read. This issue has been fixed in version 7.1.2-19.
Vulnerability Analysis
CVE-2026-40312 is exploitable with local system 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 no impact on confidentiality and integrity, and a high impact on availability.
Weakness Type
What is an off-by-five Vulnerability?
A product calculates or uses an incorrect maximum or minimum value that is 1 more, or 1 less, than the correct value.
CVE-2026-40312 has been classified to as an off-by-five vulnerability or weakness.
Products Associated with CVE-2026-40312
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Affected Versions
ImageMagick Version < 7.1.2-19 is affected by CVE-2026-40312Exploit 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.