Out-of-bounds Read in Wvware Wv
CVE-2026-112055
wvWare wv through 1.2.9 contains a stack-based out-of-bounds read vulnerability in wvGetPAPX_FKP and wvGetCHPX_FKP caused by an unvalidated FKP run count. Attackers can supply a crafted .doc file with a large crun value to read kilobytes past the 512-byte stack buffer, crashing applications like AbiWord.
Vulnerability class: Buffer Overflow
Published .
CVSS v3 metric
CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
Weakness classification (CWE)
References
- hackmd.io/@haindpwn/wv-fkp-crun-stsh-cstd-oob-read (third-party-advisory)
- github.com/AbiWord/wv/blob/wv-1-2-9/fkp.c (technical-description)
- www.vulncheck.com/advisories/wvware-wv-through-1.2.9-stack-out-of-bounds-read-v… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-112055?
- CVE-2026-112055 is a medium-severity vulnerability in Wvware Wv, classified under Out-of-bounds Read. CVSS score: 5.5/10. Published 2026-10-18.
- How severe is CVE-2026-112055?
- Medium severity. CVSS v3 base score is 5.5 out of 10.