Out-of-Bounds Write Vulnerability in UnRTF by GNU Project
CVE-2026-109831

5.1MEDIUM

Key Information:

Vendor

Gnu Project

Status
Unrtf
Vendor
CVE Published:
20 October 2026

What is CVE-2026-109831?

The UnRTF utility developed by the GNU Project is susceptible to an out-of-bounds write vulnerability. This flaw arises when a user opens a specially crafted RTF file that an attacker has designed to exploit this weakness, potentially resulting in a denial-of-service (DoS) condition. Users are advised to update to the latest version to mitigate the risks associated with this vulnerability.

Affected Version(s)

UnRTF 0 < 0.21.12

References

https://savannah.gnu.org/news/?id=10925
https://jvn.jp/en/jp/JVN29783594/

CVSS V4

Score:
5.1
Severity:
MEDIUM
Confidentiality:
None
Integrity:
Low
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
Unknown

CVSS V3.0

Score:
5.4
Severity:
MEDIUM
Confidentiality:
None
Integrity:
Low
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
Required
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.