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CVE-2026-111678— Antiword through 0.37 Stack Out-of-Bounds Read via prop8.c FKP Parsing

Quick assessment

Affected
Adri van Os antiword
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.

Antiword 0.37 及以下版本在 文件的 和 函数中存在栈越界读取漏洞。该漏洞源于对 FKP 运行计数（run counts）和 偏移量（offsets）未进行边界检查。攻击者可构造包含恶意 FKP 页面的 文件，诱导程序读取超出 512 字节栈缓冲区的内存，从而导致 Antiword 崩溃或样式解析被破坏。

CVSS 3.3 · Low

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 1

VendorProduct Version RangeStatus
Adri van Os antiword ≤ 0.37 affected
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I. Basic Information for CVE-2026-111678

Vulnerability Information
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Vulnerability Title
Antiword through 0.37 Stack Out-of-Bounds Read via prop8.c FKP Parsing
Source: CVE Program / CVE List V5
Vulnerability 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.
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:L
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
Adri van Os antiword 0 ~ 0.37 -

II. Public POCs for CVE-2026-111678

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III. Intelligence Information for CVE-2026-111678

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Vendor Advisories for CVE-2026-111678 (1)

Security Blog Posts for CVE-2026-111678 (1)

IV. Related Vulnerabilities

Same product: antiword
Same vendor: Adri van Os
Same weakness: CWE-125

V. Comments for CVE-2026-111678

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