CVE-2026-2903CWE-404CWE-476

skvadrik re2c ast.cc check_and_merge_special_rules null pointer dereference

Medium · published February 22, 2026

CVSS v4.0
4.8
EPSS
0%
Percentile
7.7
In the wild
Unconfirmed
What it is

A flaw has been found in skvadrik re2c up to 4.4. Impacted is the function check_and_merge_special_rules of the file src/parse/ast.cc. This manipulation causes null pointer dereference. The attack can only be executed locally. The exploit has been published and may be used. Patch name: febeb977936f9519a25d9fbd10ff8256358cdb97. It is suggested to install a patch to address this issue.

The record
Technical detail
CVSS v4.0
4.8 · MEDIUM
Vector
CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P
EPSS
0.00186 · 7.7th percentile
Weaknesses
CWE-404 · Improper Resource Shutdown or Release; CWE-476 · NULL Pointer Dereference
Published
2026-02-22T00:32Z
EPSS history
Timeline
  • 22 FEB 00:32Z
    skvadrik re2c ast.cc check_and_merge_special_rules null pointer dereference
    cvelistv5