Security readout for executives and security teams
Plain-English summary
ImageMagick can crash when it processes a specially malformed image with invalid YUV sampling factors. This is a denial-of-service issue, not a data theft or code execution issue based on the provided sources. Organizations using ImageMagick in web upload, media processing, or document conversion pipelines should prioritize updating affected versions.
Executive priority
Treat as a moderate availability risk. It is most urgent for customer-facing services that automatically process uploaded images. Patch during the next regular security maintenance window, faster for high-volume or mission-critical image pipelines.
Technical view
CVE-2026-25799 is a CWE-369 division-by-zero in ImageMagick YUV sampling factor validation. Before 7.1.2-15 and 6.9.13-40, a logic error lets an invalid sampling factor bypass validation and trigger a crash during image loading. CVSS 3.1 is 5.3: network-accessible, low complexity, no privileges or user interaction, availability impact only.
Likely exposure
Exposure is most likely where ImageMagick processes untrusted or externally supplied images, such as uploads, thumbnails, media conversion, or backend document workflows. Systems on ImageMagick 7.x before 7.1.2-15 or 6.x before 6.9.13-40 are affected per the advisory.
Exploitation context
The provided sources describe a reliable denial-of-service crash during image loading. They do not indicate code execution, data exposure, privilege escalation, or active exploitation. CISA KEV status in the bundle is false, so there is no source-backed evidence of known exploitation in the wild.
Researcher notes
The source bundle provides one confirmed advisory and CVE metadata. The vulnerability is narrowly described as a YUV sampling factor validation logic flaw causing division-by-zero. No exploit details, workaround specifics, or broader product impact are provided in the cited sources.
Mitigation direction
- Upgrade ImageMagick 7.x to 7.1.2-15 or later.
- Upgrade ImageMagick 6.x to 6.9.13-40 or later.
- Prioritize internet-facing or untrusted-image processing services.
- If immediate upgrade is not possible, check ImageMagick guidance for supported workarounds.
Validation and detection
- Inventory hosts, containers, and application bundles using ImageMagick.
- Confirm installed ImageMagick major version and patch level.
- Identify services that process untrusted images or user uploads.
- Verify upgraded systems report fixed versions or later.
- Monitor image-processing services for crash or availability events.
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-369: Exact CWE lookup
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Open ATT&CK lookupCVE-2026-25799 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Medium
- CVSS
- 5.3 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L3.91.4Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
5.3MediumVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Source materials
- CVE List V5 sourceCVE List V5
- https://github.com/ImageMagick/ImageMagick/security/advisories/GHSA-543g-8grm-9cw6CVE reference · x_refsource_CONFIRM
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Divide By Zero
Divide By Zero represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.