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CVE-2026-109831

Quick assessment

Affected
GNU Project UnRTF
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.

GNU 项目的 UnRTF 工具存在越界写入漏洞。如果用户打开了由攻击者精心构造的 RTF 文件，可能导致拒绝服务（DoS）状况。

CVSS 5.1 · Medium

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2026-109831

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
UnRTF by GNU Project is vulnerable to out-of-bounds write. If a user opens an RTF file crafted by an attacker, it may lead to a denial-of-service (DoS) condition.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
跨界内存写
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
GNU Project UnRTF 0 ~ 0.21.12 -

II. Public POCs for CVE-2026-109831

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III. Intelligence Information for CVE-2026-109831

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Other References for CVE-2026-109831 (2)

IV. Related Vulnerabilities

Same vendor: GNU Project
Same weakness: CWE-787

V. Comments for CVE-2026-109831

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