CVEvulnerability

CVE-2026-18374

4.9 MEDIUM Published 2026-08-27 Modified 2026-09-03 Official page ↗
Status
Awaiting Analysis
Published
2026-08-27
Last modified
2026-09-03
Assigner
3ff69d7a-14f2-4f67-a097-88dee7810d18
CVSS 3.1 (3ff69d7a-14f2-4f67-a097-88dee7810d18)
4.9 MEDIUM — CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L
Weaknesses
CWE-787

Description

Passing an effectively empty string to the `,ccs=` syntax extension of the mode argument in the `fopen` function in the GNU C Library version 2.45 or earlier may result in a heap buffer overflow when the mode string input to the function is attacker controlled. This usage pattern is not seen in applications in common GNU/Linux distributions and applications that process user-supplied values for `ccs` should not pass them through without validation.

Related

Weakness · CWE (1)

  • CWE-787 Out-of-bounds Write weakness

References