CVE-2026-30936
Description
A flaw was found in ImageMagick, a free and open-source software for editing and manipulating digital images. A remote attacker could exploit this vulnerability by providing a specially crafted image to a user, which, when processed with the -wavelet-denoise operation, could lead to an out-of-bounds heap write. This issue can result in a denial of service (DoS), causing the application to become unstable or crash.
Statement
This is a MODERATE impact vulnerability. ImageMagick in Red Hat Enterprise Linux 6 ELS and 7 ELS is affected by a heap buffer overflow. This flaw occurs when processing a specially crafted image using the -wavelet-denoise operation, which could lead to an out-of-bounds write. Exploitation requires user interaction to process the malicious image.
Mitigation
To reduce the risk of exploitation, avoid processing untrusted or unverified image files with ImageMagick. Users should exercise caution when handling images from unknown sources. Additionally, consider restricting ImageMagick's capabilities through its policy file to limit exposure to potentially vulnerable operations or file formats.
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 | 5.5 | N/A | N/A |
| Attack Vector | Local | N/A | N/A |
| Attack Complexity | Low | N/A | N/A |
| Privileges Required | None | N/A | N/A |
| User Interaction | Required | N/A | N/A |
| Scope | Unchanged | N/A | N/A |
| Confidentiality | None | N/A | N/A |
| Integrity Impact | None | N/A | N/A |
| Availability Impact | High | N/A | N/A |
Vector
Red Hat: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Understanding the Weakness (CWE)
Integrity
Technical Impact: Modify Memory; Execute Unauthorized Code or Commands
Write operations could cause memory corruption. In some cases, an adversary can modify control data such as return addresses in order to execute unexpected code.
Availability
Technical Impact: DoS: Crash, Exit, or Restart
Attempting to access out-of-range, invalid, or unauthorized memory could cause the product to crash.
Other
Technical Impact: Unexpected State
Subsequent write operations can produce undefined or unexpected results.
Frequently Asked Questions
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