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CVE-2026-112056— wvWare wv through 1.2.9 Heap Out-of-Bounds Read via wvGetSTSH

Quick assessment

Affected
wvWare wv
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

WvWare Wv 1.2.9 及更早版本在 文件的 函数中存在一个基于堆的越界读取漏洞。攻击者可通过提供特制的 Word 样式表，导致应用程序崩溃。具体而言，攻击者可提交包含十个或更少样式、或包含超出范围的样式基索引的 文件，从而读取堆数组之外的内存，进而使 AbiWord 等应用程序崩溃。

CVSS 5.5 · Medium

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2026-112056

Vulnerability Information
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Vulnerability Title
wvWare wv through 1.2.9 Heap Out-of-Bounds Read via wvGetSTSH
Source: CVE Program / CVE List V5
Vulnerability Description
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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
跨界内存读
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
wvWare wv 0 ~ 1.2.9 -

II. Public POCs for CVE-2026-112056

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III. Intelligence Information for CVE-2026-112056

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Other References for CVE-2026-112056 (3)

IV. Related Vulnerabilities

Same product: wv
Same vendor: wvWare
Same weakness: CWE-125

V. Comments for CVE-2026-112056

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