ImageMagick 7.1.2-30/6.9.13-55 MSL Mem Leak DOS
CVE-2026-86421 Published on September 7, 2026
ImageMagick before 7.1.2-30 Memory Leak via MSL decoder
ImageMagick before 7.1.2-30 and 6.9.13-55 contains a memory leak in the MSL image decoder. A crafted MSL image triggers memory allocation without proper deallocation, allowing an attacker to exhaust memory and cause a denial of service.
Vulnerability Analysis
CVE-2026-86421 can be exploited with network access, and does not require authorization privileges or user interaction. This vulnerability is consided to have a high level of attack complexity. The potential impact of an exploit of this vulnerability is considered to have no impact on confidentiality and integrity and availability.
Weakness Type
What is a Resource Exhaustion Vulnerability?
The software does not properly control the allocation and maintenance of a limited resource, thereby enabling an actor to influence the amount of resources consumed, eventually leading to the exhaustion of available resources.
CVE-2026-86421 has been classified to as a Resource Exhaustion vulnerability or weakness.
Products Associated with CVE-2026-86421
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Affected Versions
ImageMagick:- Before 7.1.2-30 is affected.
- Version 7.1.2-30 is unaffected.
- Before 6.9.13-55 is affected.
- Version 6.9.13-55 is unaffected.