CVE-2026-25970

A flaw was found in ImageMagick. A remote attacker can exploit a signed integer overflow vulnerability in the SIXEL decoder by providing a maliciously crafted SIXEL image file. This vulnerability occurs during buffer reallocation operations and can lead to memory corruption and a denial of service (DoS) condition.

This MODERATE impact vulnerability in ImageMagick's SIXEL decoder can lead to memory corruption and denial of service. It affects Red Hat Enterprise Linux 6 ELS and 7 ELS when processing a specially crafted SIXEL image file. Exploitation requires an attacker to provide a malicious image for processing.

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

To mitigate this vulnerability, avoid processing untrusted SIXEL image files with ImageMagick. If ImageMagick is used in an environment where it processes external or untrusted input, consider implementing sandboxing mechanisms to limit the potential impact of a successful exploit.