ImageMagick MVG decoder heap overflow <7.1.2-19 & <6.9.13-44
CVE-2026-33901 Published on April 13, 2026
ImageMagick has a Heap Buffer Overflow via MVG decoder
ImageMagick is free and open-source software used for editing and manipulating digital images. In versions below both 7.1.2-19 and 6.9.13-44, a heap buffer overflow occurs in the MVG decoder that could result in an out of bounds write when processing a crafted image. This issue has been fixed in versions 6.9.13-44 and 7.1.2-19.
Vulnerability Analysis
CVE-2026-33901 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 no impact on confidentiality and integrity, and a high impact on availability.
Weakness Types
Heap-based Buffer Overflow
A heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc().
What is a Memory Corruption Vulnerability?
The software writes data past the end, or before the beginning, of the intended buffer. Typically, this can result in corruption of data, a crash, or code execution. The software may modify an index or perform pointer arithmetic that references a memory location that is outside of the boundaries of the buffer. A subsequent write operation then produces undefined or unexpected results.
CVE-2026-33901 has been classified to as a Memory Corruption vulnerability or weakness.
Products Associated with CVE-2026-33901
Want to know whenever a new CVE is published for ImageMagick? stack.watch will email you.
Affected Versions
ImageMagick:- Version < 7.1.2-19 is affected.
- Version < 6.9.13-44 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.