Low severity · published Oct 16, 2026
CVE-2026-111678
Antiword through 0.37 Stack Out-of-Bounds Read via prop8.c FKP Parsing
3.3
CVSS
0.2%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L
Attack vector
Local
Complexity
Low
Privileges
None
User interaction
Required
Confidentiality
None
Integrity
None
Availability
Low
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 13% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
AN
antiword · Adri van Os
through 0.37 · source: vendor, NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-111678
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-111678
Product
https://github.com/rsdoiel/antiword/blob/fe4b579067122a2d9d62647efb1ee7cfe3ca92bb/prop8.c#L1461-L1474
Product
https://github.com/rsdoiel/antiword/blob/fe4b579067122a2d9d62647efb1ee7cfe3ca92bb/prop8.c#L997-L1022
Exploit
https://hackmd.io/@haindpwn/antiword-word8-plcflst-count-and-fkp-run-oob-read
Third Party Advisory
https://www.vulncheck.com/advisories/antiword-through-0.37-stack-out-of-bounds-read-via-prop8-c-fkp-parsing
More from antiword
5.5
CVE-2026-111677
Antiword through 0.37 Heap Out-of-Bounds Read via vGet8LstInfo in prop8.c