CVE-2026-111678
Antiword through 0.37 Stack Out-of-Bounds Read via prop8.c FKP Parsing
- State
- Published
- Severity
- 4.8 Medium
- Published
- Oct 16, 2026
- Updated
- Oct 23, 2026
- Reserved
- Oct 16, 2026
Description
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 4.8 Medium | CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N | VulnCheck |
| 3.1 | 3.3 Low | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L | 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#L997-L1022technical-description
- https://github.com/rsdoiel/antiword/blob/fe4b579067122a2d9d62647efb1ee7cfe3ca92bb/prop8.c#L1461-L1474technical-description
- VulnCheck Advisory: Antiword through 0.37 Stack Out-of-Bounds Read via prop8.c FKP Parsingthird-party-advisory
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