ImageMagick up to 6.9.13-39/7.1.2-14 on 32-bit Sun Decoder heap-based overflow

Summaryinfo

A vulnerability categorized as critical has been discovered in ImageMagick up to 6.9.13-39/7.1.2-14 on 32-bit. The affected element is an unknown function of the component Sun Decoder. Such manipulation leads to heap-based overflow. This vulnerability is traded as CVE-2026-25897. The attack may be launched remotely. There is no exploit available. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as critical, has been found in ImageMagick up to 6.9.13-39/7.1.2-14 on 32-bit. Affected by this issue is an unknown functionality of the component Sun Decoder. The manipulation with an unknown input leads to a heap-based overflow vulnerability. Using CWE to declare the problem leads to CWE-122. 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(). Impacted is confidentiality, integrity, and availability. CVE summarizes:

ImageMagick is free and open-source software used for editing and manipulating digital images. Prior to versions 7.1.2-15 and 6.9.13-40, an Integer Overflow vulnerability exists in the sun decoder. On 32-bit systems/builds, a carefully crafted image can lead to an out of bounds heap write. Versions 7.1.2-15 and 6.9.13-40 contain a patch.

The advisory is available at github.com. This vulnerability is handled as CVE-2026-25897 since 02/06/2026. The exploitation is known to be difficult. The attack may be launched remotely. No form of authentication is required for exploitation. Successful exploitation requires user interaction by the victim. The technical details are unknown and an exploit is not available.

The vulnerability scanner Nessus provides a plugin with the ID 300075 (ImageMagick < 6.9.13-40 / 7.x < 7.1.2-15 Multiple Vulnerabilities), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 6.9.13-40 or 7.1.2-15 eliminates this vulnerability.

The vulnerability is also documented in the databases at Tenable (300075) and CERT Bund (WID-SEC-2026-0484). If you want to get best quality of vulnerability data, you may have to visit VulDB.

Affected

• Debian Linux
• Amazon Linux 2
• Red Hat Enterprise Linux
• Ubuntu Linux
• SUSE Linux
• Oracle Linux
• SUSE openSUSE
• Open Source ImageMagick

Productinfo

Type

• Image Processing Software

Name

• ImageMagick

Version

• 6.9.13-39
• 7.1.2-14

License

• open-source

Website

• Product: https://www.imagemagick.org/

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If you want to get best quality of vulnerability data, you may have to visit VulDB.

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