CVE-2026-111677CWE-125

CVE-2026-111677

Medium · published October 16, 2026

CVSS v3.1
5.5
EPSS
0%
Percentile
8.2
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
5.5 · MEDIUM
Vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
CVSS v4.0
6.8 · 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
EPSS
0.00190 · 8.2th percentile
Weakness
CWE-125 · Out-of-bounds Read
Published
2026-10-16T22:17Z
Affected products (1)
ProductVersionsFixed in
antiword_project/antiword≤ 0.37—
References (4)
https://github.com/rsdoiel/antiword/blob/fe4b579067122a2d9d62647efb1ee7cfe3ca92bb/prop8.c#L799-L825 · [email protected]https://hackmd.io/@haindpwn/antiword-word8-plcflst-count-and-fkp-run-oob-read · [email protected]https://www.vulncheck.com/advisories/antiword-through-0.37-heap-out-of-bounds-read-via-vget8lstinfo-in-prop8-c · [email protected]https://hackmd.io/@haindpwn/antiword-word8-plcflst-count-and-fkp-run-oob-read · 134c704f-9b21-4f2e-91b3-4a467353bcc0
EPSS history
Timeline
  • 18 OCT 03:27Z
    EPSS moved — → 0%
    epss
  • 16 OCT 17:39Z
    Antiword through 0.37 Heap Out-of-Bounds Read via vGet8LstInfo in prop8.c
    cvelistv5
  • 16 OCT 17:39Z
    Antiword through 0.37 Heap Out-of-Bounds Read via vGet8LstInfo in prop8.c
    cvelistv5