CVE-2026-25968 in ImageMagick
Summary
by MITRE • 02/24/2026
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, a stack buffer overflow occurs when processing the an attribute in msl.c. A long value overflows a fixed-size stack buffer, leading to memory corruption. Versions 7.1.2-15 and 6.9.13-40 contain a patch.
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Analysis
by VulDB Data Team • 06/24/2026
The vulnerability identified as CVE-2026-25968 represents a critical stack buffer overflow flaw within ImageMagick, a widely deployed image processing software suite that serves as a cornerstone for digital media manipulation across numerous platforms and applications. This software operates as a fundamental component in web servers, content management systems, and various digital workflows where image handling is essential. The flaw specifically manifests in the msl.c source file where processing of certain attributes triggers memory corruption through improper buffer boundary checks. The vulnerability arises from the handling of attribute values that exceed the predetermined stack buffer capacity, creating conditions where arbitrary memory locations can be overwritten. This type of flaw directly aligns with CWE-121 Stack-based Buffer Overflow, which is classified as a serious weakness in software security design patterns and represents a common vector for exploitation in modern cyber attacks.
The operational impact of this vulnerability extends beyond simple memory corruption to encompass potential remote code execution capabilities that could be exploited by malicious actors. When an attacker crafts a specially formatted image file containing malicious attribute values, the processing routine in msl.c will attempt to store these values in a fixed-size buffer that cannot accommodate the excessive data. This overflow condition creates opportunities for attackers to overwrite adjacent memory locations including return addresses, function pointers, or other critical program state information. The exploitation potential of such vulnerabilities has been extensively documented in the ATT&CK framework under techniques related to buffer overflow exploitation and code injection. The vulnerability affects both major branches of ImageMagick's codebase, indicating the widespread nature of the flaw and its potential impact across numerous deployments.
Security researchers have identified that the vulnerability can be triggered through various attack vectors including web-based image upload systems, file processing pipelines, and automated image manipulation workflows. The patched versions 7.1.2-15 and 6.9.13-40 implement proper boundary checks and input validation mechanisms that prevent the buffer overflow condition from occurring. Organizations utilizing ImageMagick in production environments must prioritize immediate patch deployment to mitigate the risk of exploitation. The remediation process involves updating to the specified patched versions while also implementing additional security measures such as input sanitization, file type validation, and restricted processing permissions. The vulnerability serves as a reminder of the critical importance of proper memory management in software development and the necessity of comprehensive security testing, particularly for libraries that process untrusted input data. Organizations should also consider implementing network segmentation, intrusion detection systems, and regular security assessments to detect and prevent potential exploitation attempts. The vulnerability demonstrates how seemingly benign image processing operations can become attack vectors when proper security controls are not implemented.