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CVE Record

CVE-2018-1000051: Artifex Mupdf version 1.12.0 contains a Use After Free vulnerability in fz_keep_key_storable that can resul...

Artifex Mupdf version 1.12.0 contains a Use After Free vulnerability in fz_keep_key_storable that can result in DOS / Possible code execution. This attack appear to be exploitable via Victim opens a specially crafted PDF.

UnknownCVSS not scoredNot KEV-listedUpdated
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Glexia's TakeAutomated analysishigh

Security readout for executives and security teams

Plain-English summary

MuPDF 1.12.0 has a use-after-free flaw that can crash the application and may allow code execution when a victim opens a specially crafted PDF. There is no KEV listing in the provided data, so active exploitation is not established.

Executive priority

Prioritize remediation where MuPDF handles external or customer-supplied PDFs. The business risk is highest in automated document workflows because a single malicious file may trigger service disruption or possible code execution.

Technical view

The reported flaw is a use-after-free in MuPDF's fz_keep_key_storable path. The CVE description ties exploitation to opening a crafted PDF and lists denial of service with possible code execution. Public references include Debian and Gentoo advisories, Ghostscript bug reports, and an upstream MuPDF commit.

Likely exposure

Organizations are exposed where MuPDF 1.12.0 or downstream packages based on it process PDFs, especially desktop readers, server-side converters, indexing pipelines, or document preview services. The provided bundle does not enumerate CPEs or all affected downstream versions.

Exploitation context

The attack requires a malicious PDF to be opened or processed by a vulnerable MuPDF component. The provided sources do not show confirmed exploitation in the wild, and the CVE is not marked as CISA KEV.

Researcher notes

Evidence is sufficient for affected component, trigger class, and broad impact, but incomplete for CVSS, CWE, exact downstream version ranges, and exploitation status. Treat code execution as possible, not proven, based on the CVE wording.

Mitigation direction

  • Apply relevant Debian or Gentoo security updates where those packages are used.
  • Upgrade MuPDF according to upstream or distributor guidance.
  • Reduce automated processing of untrusted PDFs until vulnerable instances are patched.
  • Use sandboxing or isolation for PDF rendering and conversion workflows.

Validation and detection

  • Inventory systems and applications using MuPDF or linked MuPDF libraries.
  • Confirm no deployed instance remains on MuPDF 1.12.0.
  • Check Debian and Gentoo package status against their advisories.
  • Review document-processing services that ingest externally supplied PDFs.
Prepared
Confidence
medium
Sources
7

Public sources used

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

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description · low confidence lookup

Execution behavior lookup

The CVE wording references code or command execution, so execution technique review may help defensive triage. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.

Open ATT&CK lookup
cve · low confidence lookup

CVE-2018-1000051 mapping review

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

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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
6Source 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.