CVE-2025-8735: GNU cflow Lexer c.c yylex null pointer dereference

Severity: low (CVSS 3.3 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.2% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2025-08-08 · updated 2026-06-17
Weakness: CWE-404

Description

A vulnerability classified as problematic was found in GNU cflow up to 1.8. Affected by this vulnerability is the function yylex of the file c.c of the component Lexer. The manipulation leads to null pointer dereference. An attack has to be approached locally. The exploit has been disclosed to the public and may be used.

Affected products

GNU cflow: 1.0, 1.1, 1.2, 1.3, 1.4, 1.5 (+3)

References

https://drive.google.com/file/d/1Q_rDQSEl3cBu6SUbfqr9pV9cHgvKcXFI/view?usp=drive_link
https://lists.gnu.org/archive/html/bug-cflow/2025-07/msg00000.html
https://vuldb.com/?ctiid.319231
https://vuldb.com/?id.319231
https://vuldb.com/?submit.622328
https://www.gnu.org/
https://www.openwall.com/lists/oss-security/2025/10/27/12

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