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CVE-2026-112055— wvWare wv through 1.2.9 Stack Out-of-Bounds Read via wvGetPAPX_FKP and wvGetCHPX_FKP

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 及更早版本存在一个基于栈的越界读取漏洞，该漏洞位于 和 函数中，原因是未对 FKP 运行计数（run count）进行验证。攻击者可通过提供包含超大 值的恶意 文件，读取超出 512 字节栈缓冲区数千字节的数据，从而导致 AbiWord 等应用程序崩溃。

CVSS 5.5 · Medium

Possible ATT&CK Techniques 1 AI

T1203 · Exploitation for Client Execution
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I. Basic Information for CVE-2026-112055

Vulnerability Information
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Vulnerability Title
wvWare wv through 1.2.9 Stack Out-of-Bounds Read via wvGetPAPX_FKP and wvGetCHPX_FKP
Source: CVE Program / CVE List V5
Vulnerability Description
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.
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-2026-112055

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III. Intelligence Information for CVE-2026-112055

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Other References for CVE-2026-112055 (3)

IV. Related Vulnerabilities

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

V. Comments for CVE-2026-112055

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