CVE catalog
CVE-2026-109831
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.
- Severity
- Medium · CVSS 5.5
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H - Published
- Updated
- Source
- [NVD] · [CVE record]
- EPSS
- 0.21% · Oct 25, 2026
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.
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Debian | unrtf | sid | 0.21.13-1 | fixed |
| Debian | unrtf | forky | 0.21.13-1 | fixed |
| Debian | unrtf | trixie | 0.21.10-clean-1 | vulnerable |
| Debian | unrtf | bookworm | 0.21.10-clean-1 | vulnerable |
| Ubuntu | unrtf | 16.04 | 0.21.5-3 | vulnerable |
| Ubuntu | unrtf | 16.04 | 0.21.9-clean-2 | vulnerable |
| Ubuntu | unrtf | 16.04 | 0.21.9-clean-3~build0.16.04.1 | vulnerable |
| Ubuntu | unrtf | 18.04 | 0.21.9-clean-3 | vulnerable |
| Ubuntu | unrtf | 20.04 | 0.21.10-clean-1 | vulnerable |
| Ubuntu | unrtf | 22.04 | 0.21.10-clean-1 | vulnerable |
| Ubuntu | unrtf | 24.04 | 0.21.10-clean-1 | vulnerable |
| Ubuntu | unrtf | 26.10 | 0.21.10-clean-2build1 | vulnerable |
| Ubuntu | unrtf | 26.04 | 0.21.10-clean-2 | vulnerable |
| Ubuntu | unrtf | 26.04 | 0.21.10-clean-2build1 | vulnerable |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | unrtf | source | sid | 0.21.13-1 | unimportant | Not reported | Not reported |
| Debian | unrtf | source | forky | 0.21.13-1 | unimportant | Not reported | Not reported |
| Debian | unrtf | source | trixie | (unfixed) | unimportant | Not reported | Not reported |
| Debian | unrtf | source | bookworm | (unfixed) | unimportant | Not reported | Not reported |
OpenFactory catalog packages
[Debian 12 (Bookworm)]
- [unrtf]Affected
Details (2)
0.21.10-clean-1· amd64 · bookwormAffected
nvd · unrtf · debian · bookworm; nvd · unrtf · debian · 12
0.21.10-clean-1· arm64 · bookwormAffected
nvd · unrtf · debian · bookworm; nvd · unrtf · debian · 12
[Debian 13 (Trixie)]
Observed:
References
- [https://nvd.nist.gov/vuln/detail/CVE-2026-109831]
- [https://osv.dev/vulnerability/DEBIAN-CVE-2026-109831]
- [https://osv.dev/vulnerability/UBUNTU-CVE-2026-109831]
- [https://security-tracker.debian.org/tracker/CVE-2026-109831]
- [https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-109831.json]
[Debian Security Tracker] · [FIRST EPSS] · [National Vulnerability Database (NVD)] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX]