CVE-2026-112056

MEDIUM 5.5

wvWare wv through 1.2.9 Heap Out-of-Bounds Read via wvGetSTSH

CVSS Score

5.5

EPSS Score

0.0%

EPSS Percentile

0th

wvWare wv through 1.2.9 contains a heap-based out-of-bounds read vulnerability in wvGetSTSH in stylesheet.c that allows attackers to crash applications by supplying crafted Word stylesheets. Attackers can provide a .doc file with ten or fewer styles or out-of-range style base indexes to read past heap arrays, crashing applications such as AbiWord.

CWE	CWE-125
Vendor	wvware
Product	wv
Published	Oct 18, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Attack Vector

Local

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

Affected Versions

wvWare / wv

0 ≤ 1.2.9

References

NVD ↗ CVE.org ↗ EPSS Data ↗

hackmd.io: https://hackmd.io/@haindpwn/wv-fkp-crun-stsh-cstd-oob-read github.com: https://github.com/AbiWord/wv/blob/wv-1-2-9/stylesheet.c#L447 vulncheck.com: https://www.vulncheck.com/advisories/wvware-wv-through-1.2.9-heap-out-of-bounds-read-via-wvgetstsh

Credits

HaiND from the Post and Telecommunication Institute of Technology