CVE-2026-111677

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.

• CWE-125

• https://github.com/rsdoiel/antiword/blob/fe4b579067122a2d9d62647efb1ee7cfe3ca92bb/prop8.c#L799-L825Product
• 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-heap-out-of-bounds-read-via-vget8lstinfo-in-prop8-cThird 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 20, 2026

Status

Analyzed

• 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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