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CVE Record

CVE-2026-25971: ImageMagick's MSL: Stack overflow in ProcessMSLScript

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, Magick fails to check for circular references between two MSLs, leading to a stack overflow. Versions 7.1.2-15 and 6.9.13-40 contain a patch.

MediumCVSS 6.2Not KEV-listedUpdated
Glexia's TakeAutomated analysismoderate

Security readout for executives and security teams

Plain-English summary

Affected ImageMagick versions can crash from uncontrolled circular MSL references. The documented impact is availability loss, not data theft or tampering. Patched releases are available, so the practical priority is finding exposed ImageMagick installs and updating them.

Executive priority

Treat as a moderate operational risk. It is not documented as exploited and does not indicate confidentiality or integrity impact, but unpatched image-processing systems could be crashed. Patch during the next maintenance window, faster for shared or externally influenced processing environments.

Technical view

CVE-2026-25971 is a CWE-674 uncontrolled recursion issue in ImageMagick ProcessMSLScript. Before 7.1.2-15 and 6.9.13-40, circular references between two MSLs are not checked, causing stack overflow and denial of service. CVSS 3.1 is 6.2 with local attack vector and high availability impact.

Likely exposure

Exposure is most likely on systems running affected ImageMagick versions where untrusted local users or automated workflows can invoke MSL processing. The source bundle lists ImageMagick 7.0.0 through before 7.1.2-15 and 6.x before 6.9.13-40.

Exploitation context

The provided sources do not show active exploitation, and the CVE is not marked KEV. The CVSS vector indicates local access, low complexity, no privileges, and no user interaction, with impact limited to availability.

Researcher notes

Evidence is limited to the CVE metadata and ImageMagick advisory. No CPEs are provided. Do not infer remote exploitability from the description; use the CVSS local vector unless additional vendor or threat-intelligence evidence appears.

Mitigation direction

  • Upgrade ImageMagick to 7.1.2-15, 6.9.13-40, or later.
  • Prioritize shared hosts, CI workers, and image-processing services using affected versions.
  • If upgrade is delayed, restrict untrusted access to ImageMagick and MSL processing.
  • Review ImageMagick vendor guidance before applying any compensating controls.

Validation and detection

  • Inventory ImageMagick versions across servers, containers, build agents, and application dependencies.
  • Confirm affected hosts are below 7.1.2-15 or 6.9.13-40.
  • Check whether MSL processing is enabled or used in local workflows.
  • After updating, verify ImageMagick reports a patched version.
  • Review crash or availability logs for unexplained ImageMagick failures.
Prepared
Confidence
high
Sources
3

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

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 · low confidence lookup

CWE-674: 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 lookup
cve · low confidence lookup

CVE-2026-25971 mapping review

Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.

Open ATT&CK lookup
Vulnerability profileCVE Program record
Severity
Medium
CVSS
6.2 (3.1)
Known Exploited
No
Published

Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Official CVE source material

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.

1CVSS vectors
3Timeline events
1ADP providers
2Source links

SSVC decision data

CISA-ADPCISA Coordinator
Timestamp
Version
2.0.3
Exploitation: noneAutomatable: noTechnical Impact: partial

CVSS vector scores

1 official score

We 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.

ScoreVersionSeverityVectorExploitImpactSource
6.2CVSS 3.1MediumCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H2.53.6GitHub_M

Vulnerability scoring details

Base CVSS 3.1 score

6.2Medium
CVSS 3.1 vector shape for CVE-2026-25971Attack VectorAttack ComplexityPrivileges RequiredUser InteractionScopeConfidentiality ImpactIntegrity ImpactAvailability Impact

Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack Vector
NetworkAdjacentLocalPhysical
Attack Complexity
LowHigh
Privileges Required
NoneLowHigh
User Interaction
NoneRequired
Scope
ChangedUnchanged
Confidentiality Impact
HighLowNone
Integrity Impact
HighLowNone
Availability Impact
HighLowNone

Vulnerability timeline

Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.

  1. CVE reservedCVE Program

    The CVE ID was reserved by the assigning CNA.

  2. CVE publishedCVE Program

    The CVE record was published.

  3. CVE updatedCVE Program

    The CVE record metadata indicates this as the latest update time.

ADP provider summaries

CISA-ADPCISA ADP Vulnrichment
other:ssvc

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
ImageMagickImageMagick>= 7.0.0, < 7.1.2-15, < 6.9.13-40Listed
Weakness

CWE details

CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.

CWE-674 · source CWE mapping

Uncontrolled Recursion

Uncontrolled Recursion represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.