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CVE Record

CVE-2018-9135: In ImageMagick 7.0.7-24 Q16, there is a heap-based buffer over-read in IsWEBPImageLossless in coders/webp.c.

In ImageMagick 7.0.7-24 Q16, there is a heap-based buffer over-read in IsWEBPImageLossless in coders/webp.c.

UnknownCVSS not scoredNot KEV-listedUpdated
Glexia's TakeAutomated analysisunknown

Security readout for executives and security teams

Plain-English summary

This CVE describes a memory read bug in ImageMagick 7.0.7-24 Q16 when handling WebP images. Services that accept or convert uploaded images could be affected if they run this build. The source bundle does not provide CVSS, confirmed exploitation, or a named patch, so urgency depends on whether ImageMagick processes untrusted WebP content.

Executive priority

Prioritize environments that process user-supplied WebP files. Without severity scoring or exploitation evidence, this is not proven critical, but internet-facing image pipelines should be reviewed promptly.

Technical view

The flaw is a heap-based buffer over-read in IsWEBPImageLossless in coders/webp.c. The provided data identifies ImageMagick 7.0.7-24 Q16, but does not list CPEs, broader affected versions, CWE mapping, CVSS metrics, or a remediation commit. Treat version scope and fix status as incomplete from these sources.

Likely exposure

Likely exposure is image-processing workloads using ImageMagick 7.0.7-24 Q16, especially upload, thumbnailing, conversion, or scanning services that ingest WebP files from users or third parties.

Exploitation context

The source bundle does not show CISA KEV listing or any cited evidence of active exploitation. It also does not provide exploit maturity, public exploit confirmation, or impact beyond the buffer over-read description.

Researcher notes

Evidence is sparse: the bundle gives the vulnerable function and version but lacks CVSS, CWE, CPEs, patch details, and exploit status. Avoid expanding affected scope beyond ImageMagick 7.0.7-24 Q16 unless vendor records support it.

Mitigation direction

  • Inventory ImageMagick deployments and identify 7.0.7-24 Q16 usage.
  • Check ImageMagick vendor guidance and issue 1009 for fix status.
  • Upgrade affected ImageMagick builds if vendor guidance identifies a fixed release.
  • Restrict untrusted WebP processing where business workflows allow.
  • Run image conversion workloads with sandboxing and least privilege.

Validation and detection

  • Confirm ImageMagick version and build variant on relevant hosts.
  • Map services that accept, transform, or scan WebP images.
  • Review crash telemetry around ImageMagick WebP processing.
  • Verify image-processing workers run with isolation and limited privileges.
  • Track vendor issue status before closing remediation.
Prepared
Confidence
medium
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

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CVE-2018-9135 mapping review

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Vulnerability profileCVE Program record
Severity
Unknown
CVSS
Not scored
Known Exploited
No
Published
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.

0CVSS vectors
0Timeline events
0ADP providers
2Source links

CVSS and timeline data

No CVSS vectors or timeline events were available in the normalized CVE source material.

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
n/an/an/aListed
Weakness

CWE details

No CWE listed

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