Medium 5.5Published Oct 16, 2026

CVE-2026-111677Antiword through 0.37 Heap Out-of-Bounds Read via vGet8LstInfo in prop8.c

Updated under an hour ago (2026-10-19 07:30 UTC)

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It affects Adri van Os antiword. Add what you run to find out whether that includes you.

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Every CVE for Adri van Os antiword

Exploited in the last 30 days

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.

CVSS: 5.5 MEDIUM (v3.1, CNA)CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Weakness (CWE): CWE-125
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: VulnCheck
NVD analysis: Awaiting Analysis
Record last updated: Oct 18, 2026
First seen by InfoSec Signals: Oct 16, 2026

Affected products

Affected products

Adri van Os antiword adri_van_os:antiword (from the name)	through 0.37	CNA record

References

https://hackmd.io/@haindpwn/antiword-word8-plcflst-count-and-fkp-run-oob-readthird-party-advisory
https://github.com/rsdoiel/antiword/blob/fe4b579067122a2d9d62647efb1ee7cfe3ca92bb/prop8.c#L799-L825technical-description
https://www.vulncheck.com/advisories/antiword-through-0.37-heap-out-of-bounds-read-via-vget8lstinfo-in-prop8-cthird-party-advisory

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.