Security readout for executives and security teams
Plain-English summary
CVE-2026-23952 is a denial-of-service flaw in ImageMagick’s MSL parser. A crafted MSL document can trigger a crash when a <comment> tag is processed before an image is loaded. The stated impact is availability loss, not data theft or code execution. The issue is fixed in version 14.10.2.
Executive priority
Treat this as a moderate availability risk. Patch internet-facing or multi-tenant image-processing services first, especially where users can submit files or scripting inputs. It does not currently warrant emergency response based on the provided evidence, but it should be included in normal vulnerability remediation cycles.
Technical view
ImageMagick versions below 14.10.2 contain a CWE-476 NULL pointer dereference in the Magick Scripting Language parser. The condition occurs around <comment> handling before image load, causing assertion failure in debug builds or NULL pointer dereference in release builds. CVSS 3.1 is 6.5: network, low complexity, low privileges, no user interaction, high availability impact.
Likely exposure
Exposure is most relevant where ImageMagick processes MSL content from users, tenants, automated jobs, or external integrations. Services that only process trusted internal image workflows have lower practical risk. The source bundle identifies ImageMagick versions below 14.10.2 as affected.
Exploitation context
The provided sources do not show CISA KEV listing or active exploitation. The vulnerability is described as denial of service, requiring low privileges according to the CVSS vector. No confidentiality or integrity impact is stated in the provided record.
Researcher notes
Evidence is limited to the CVE record and linked advisories. The affected range is stated as below 14.10.2, and the fix version is 14.10.2. No exploit code, active exploitation, or broader product impact is documented in the provided sources.
Mitigation direction
- Upgrade ImageMagick to version 14.10.2 or later.
- Inventory applications, containers, and libraries that bundle or invoke ImageMagick.
- Prioritize services processing user-supplied MSL or image transformation requests.
- If immediate patching is blocked, check ImageMagick guidance for supported workarounds.
- Avoid processing untrusted MSL content until patched, where operationally feasible.
Validation and detection
- Confirm deployed ImageMagick versions are 14.10.2 or later.
- Check container images and build artifacts for older ImageMagick packages.
- Review dependency manifests for ImageMagick or related wrappers.
- Verify production image-processing paths do not use affected versions.
- Monitor for unexplained ImageMagick crashes or service restarts.
Public sources used
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-476: Exact CWE lookup
Use the exact CWE identifier as the starting point before reviewing related ATT&CK behavior. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupCVE-2026-23952 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
- 6.5 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
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:L/UI:N/S:U/C:N/I:N/A:H2.83.6Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
6.5MediumVector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Source materials
- CVE List V5 sourceCVE List V5
- https://github.com/ImageMagick/ImageMagick/security/advisories/GHSA-5vx3-wx4q-6cj8CVE reference · x_refsource_CONFIRM
- https://github.com/dlemstra/Magick.NET/releases/tag/14.10.2CVE reference · x_refsource_MISC
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.
NULL Pointer Dereference
NULL Pointer Dereference represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.