CVE-2026-111677
Antiword through 0.37 Heap Out-of-Bounds Read via vGet8LstInfo in prop8.c
- State
- Published
- Severity
- 6.8 Medium
- Published
- Oct 16, 2026
- Updated
- Oct 18, 2026
- Reserved
- Oct 16, 2026
Description
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 6.8 Medium | CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N | VulnCheck |
| 3.1 | 5.5 Medium | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H | VulnCheck |
Weaknesses
- CWE-125 Out-of-bounds Read
Affected Products
| Product | Versions |
|---|---|
antiwordAdri van Os |
|
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
- VulnCheck Advisory: Antiword through 0.37 Heap Out-of-Bounds Read via vGet8LstInfo in prop8.cthird-party-advisory
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