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TI-2026-75463 Aliases CVE-2026-111677GHSA-v4mq-qwjh-99x8

Heap out-of-bounds read in Antiword lets crafted .doc files crash it

Priority MEDIUM 63CWE-125Published · Updated

Key facts

Attack vector
Local
Privileges required
None
User interaction
Passive
Attack complexity
Low
Attack requirements
None
Impact type
Denial of service
Confidentiality · integrity · availability
None · None · High
Fix status
No fix listed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-125 and the CVSS impact.

Summary

Adri van Os antiword from 0 through 0.37 contains a heap out-of-bounds read in vGet8LstInfo in prop8.c (CWE-125). An inverted bounds check on the PlcfLst record count lets a crafted Word 8 .doc file read past the heap allocation. A local attacker needs a user to open the file, and the read crashes the process. A public exploit is linked in the references.

Written with Claude Haiku 5.5 from the sources below · 2026-10-28

Description from the CNA

Antiword through 0.37 contains a heap out-of-bounds read vulnerability in vGet8LstInfo in prop8.c caused by an inverted bounds check on the PlcfLst record count. Attackers can supply a crafted Word 8 .doc file claiming up to 0xffff LSTF records in a tiny buffer, causing reads past the heap allocation that crash the process.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00187 8th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
Adri van Osantiwordup to 0.37—No fix listedCNA
  • antiword VendorAdri van Os Affected up to 0.37 Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:antiword_project:antiword:*:*:*:*:*:*:*:*up to 0.37VulnerableAntiword Project
  • cpe:2.3:a:antiword_project:antiword:*:*:*:*:*:*:*:* Versions up to 0.37 Vulnerable ·Antiword Project

Remediation

The sources list no fixed version for antiword.

Written with Claude Haiku 5.5 from the sources below · 2026-10-28

Vendor assessments

Red Hat

Red Hat's page for this CVE →

Not affected: 1 product
  • Red Hat

Timeline

  1. 2026-10-16 Threatist record created from CVE-2026-111677
  2. 2026-10-16 Alias added: GHSA-v4mq-qwjh-99x8
  3. 2026-10-16 CISA SSVC decision points changed
  4. 2026-10-21 Affected versions changed · Red Hat
  5. 2026-10-21 CVSS score added · Red Hat

References

Exploit 1

Other 1

  • TI-2026-75464 Stack out-of-bounds read in Antiword .doc FKP parsing CVSS 4.0MEDIUM 4.8
  • TI-2014-06738 Buffer overflow in the bGetPPS function in wordole.c in Antiword 0.37 allows remote… CVSS 2.0MEDIUM 5.0

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences