CVE-2026-111678

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.

• CWE-125

• https://github.com/rsdoiel/antiword/blob/fe4b579067122a2d9d62647efb1ee7cfe3ca92bb/prop8.c#L1461-L1474Product
• https://github.com/rsdoiel/antiword/blob/fe4b579067122a2d9d62647efb1ee7cfe3ca92bb/prop8.c#L997-L1022Product
• https://hackmd.io/@haindpwn/antiword-word8-plcflst-count-and-fkp-run-oob-readExploit, Mitigation, Third Party Advisory
• https://www.vulncheck.com/advisories/antiword-through-0.37-stack-out-of-bounds-read-via-prop8-c-fkp-parsingThird Party Advisory
• https://hackmd.io/@haindpwn/antiword-word8-plcflst-count-and-fkp-run-oob-readExploit, Mitigation, Third Party Advisory

Published

Oct 16, 2026

Last Modified

Oct 23, 2026

Status

Modified

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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