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TI-2026-75464 Aliases CVE-2026-111678GHSA-gmg3-h7rv-2cc6

Stack out-of-bounds read in Antiword .doc FKP parsing

Priority MEDIUM 55CWE-125Published · Updated

Key facts

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

Attack profile from CVSS 4.0 · CNA. Fix status from CNA.

Summary

Antiword through 0.37 from Adri van Os contains a stack out-of-bounds read in prop8.c (CWE-125) because FKP run counts and grpprl offsets are not bounded. A local user who opens a crafted .doc file with malicious FKP pages can read past the 512-byte stack buffer, crashing antiword or corrupting style parsing. 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 stack out-of-bounds read vulnerability in vGet8PapInfo and vGet8ChrInfo in prop8.c because FKP run counts and grpprl offsets are not bounded. Attackers can supply a crafted .doc file with malicious FKP pages to read past the 512-byte stack buffer, crashing antiword or corrupting style parsing.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00222 12th 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-2026-111678
  2. 2026-10-16 Alias added: GHSA-gmg3-h7rv-2cc6
  3. 2026-10-21 Affected versions changed · Red Hat
  4. 2026-10-21 CVSS score added · Red Hat
  5. 2026-10-23 CISA SSVC decision points changed
  6. 2026-10-23 Priority changed: LOW → MEDIUM

References

Exploit 1

Other 2

  • TI-2026-75463 Heap out-of-bounds read in Antiword lets crafted .doc files crash it CVSS 4.0MEDIUM 6.8
  • 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