CVE catalog
CVE-2025-8736
cflow: CVE-2025-8736
- Severity
- Medium · CVSS 5.3
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L - Published
- Source
- [NVD] · [CVE record]
- EPSS
- 0.17% · Oct 25, 2026
A vulnerability, which was classified as critical, has been found in GNU cflow up to 1.8. Affected by this issue is the function yylex of the file c.c of the component Lexer. The manipulation leads to buffer overflow. Local access is required to approach this attack. The exploit has been disclosed to the public and may be used.
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 | cflow | sid | 1:1.8-1 | vulnerable |
| Debian | cflow | forky | 1:1.8-1 | vulnerable |
| Debian | cflow | trixie | 1:1.7-5 | vulnerable |
| Debian | cflow | bookworm | 1:1.7-4 | vulnerable |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | cflow | source | sid | (unfixed) | unimportant | Not reported | Not reported |
| Debian | cflow | source | forky | (unfixed) | unimportant | Not reported | Not reported |
| Debian | cflow | source | trixie | (unfixed) | unimportant | Not reported | Not reported |
| Debian | cflow | source | bookworm | (unfixed) | unimportant | Not reported | Not reported |
OpenFactory catalog packages
[Debian 12 (Bookworm)]
- [cflow]Affected
Details (2)
1:1.7-4· amd64 · bookwormAffected
dsa · cflow · debian · bookworm; dsa · cflow · debian · 12
1:1.7-4· arm64 · bookwormAffected
dsa · cflow · debian · bookworm; dsa · cflow · debian · 12
- [cflow-doc]Affected
Source package: [cflow]
Details (2)
1:1.7-4· all · bookwormAffected
dsa · cflow · debian · bookworm; dsa · cflow · debian · 12
1:1.7-4· all · bookwormAffected
dsa · cflow · debian · bookworm; dsa · cflow · debian · 12
- [cflow-l10n]Affected
Source package: [cflow]
Details (2)
1:1.7-4· all · bookwormAffected
dsa · cflow · debian · bookworm; dsa · cflow · debian · 12
1:1.7-4· all · bookwormAffected
dsa · cflow · debian · bookworm; dsa · cflow · debian · 12
[Debian 13 (Trixie)]
- [cflow]Affected
Source package: [cflow]
Details (2)
1:1.7-5· amd64 · trixieAffected
dsa · cflow · debian · 13
1:1.7-5+b1· arm64 · trixieAffected
dsa · cflow · debian · 13
- [cflow-doc]Affected
Source package: [cflow]
Details (2)
1:1.7-5· all · trixieAffected
dsa · cflow · debian · 13
1:1.7-5· all · trixieAffected
dsa · cflow · debian · 13
- [cflow-l10n]Affected
Source package: [cflow]
Details (2)
1:1.7-5· all · trixieAffected
dsa · cflow · debian · 13
1:1.7-5· all · trixieAffected
dsa · cflow · debian · 13
Observed:
References
- [https://osv.dev/vulnerability/DEBIAN-CVE-2025-8736]
- [https://security-tracker.debian.org/tracker/CVE-2025-8736]
- [https://security.access.redhat.com/data/csaf/v2/vex/2025/cve-2025-8736.json]
[Debian Security Tracker] · [FIRST EPSS] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX]