CVE-2026-25986
Description
A flaw was found in ImageMagick. A heap buffer overflow vulnerability exists when processing specially crafted YUV 4:2:2 (NoInterlace) images. A remote attacker could exploit this by providing a malicious image, leading to a denial of service (DoS) due to a write beyond the allocated buffer.
Statement
This MODERATE impact vulnerability in ImageMagick affects Red Hat Enterprise Linux 6 ELS and 7 ELS. A heap buffer overflow occurs when processing specially crafted YUV 4:2:2 images, which could lead to denial of service or potentially arbitrary code execution. Exploitation requires an attacker to provide a malicious image file to a system using ImageMagick.
Mitigation
To mitigate this issue, avoid processing untrusted YUV 4:2:2 image files with ImageMagick. If ImageMagick is used in automated workflows or server-side applications, consider implementing sandboxing mechanisms to limit the potential impact of processing malicious input. Ensure that ImageMagick instances are not exposed to untrusted input sources without proper validation and isolation.
Common Vulnerability Scoring System (CVSS) Score Details
Info alert:Important note
CVSS scores for open source components depend on vendor-specific factors (e.g. version or build chain). Therefore, Red Hat's score and impact rating can be different from NVD and other vendors. Red Hat remains the authoritative CVE Naming Authority (CNA) source for its products and services (see Red Hat classifications).
The following CVSS metrics and score provided are preliminary and subject to review.
CVSS v3 Score Breakdown
| Red Hat | NVD | cve.org | |
|---|---|---|---|
| Base Score | 5.3 | 9.8 | N/A |
| Attack Vector | Network | Network | N/A |
| Attack Complexity | Low | Low | N/A |
| Privileges Required | None | None | N/A |
| User Interaction | None | None | N/A |
| Scope | Unchanged | Unchanged | N/A |
| Confidentiality | None | High | N/A |
| Integrity Impact | None | High | N/A |
| Availability Impact | Low | High | N/A |
Vector
Red Hat: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
NVD: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Understanding the Weakness (CWE)
Integrity,Confidentiality,Availability
Technical Impact: Read Memory; Modify Memory; Execute Unauthorized Code or Commands
Buffer overflows often can be used to execute arbitrary code, which is usually outside the scope of a program's implicit security policy. This can often be used to subvert any other security service.
Availability
Technical Impact: Modify Memory; DoS: Crash, Exit, or Restart; DoS: Resource Consumption (CPU)
Buffer overflows generally lead to crashes. Other attacks leading to lack of availability are possible, including putting the program into an infinite loop.
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