CVE-2026-18374

Katalog CVE

CVSS 4.9 · Medium EPSS 0,14%

Kerentanan Out-of-bounds Write. Skor CVSS 3.1 4.9 (Medium) menurut CNA.

Deskripsi (NVD)

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.

Rincian

Terbit di NVD

27 Agustus 2026

Terakhir diubah

3 September 2026

Status NVD

Awaiting Analysis

CVSS 3.1

4.9 (Medium), sumber CNA
CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L · uraikan di kalkulator

Jenis kelemahan (CWE)

CWE-787: Out-of-bounds Write

EPSS (30 hari)

0,14% peluang dieksploitasi; lebih tinggi dari 3,2% CVE lain

Produk dan versi terdampak

NVD belum mencantumkan data produk (CPE) untuk CVE ini. Produk yang terdampak biasanya disebut di deskripsi dan di advisory vendor pada daftar referensi.

Referensi dan perbaikan

• https://sourceware.org/bugzilla/show_bug.cgi?id=34574
• https://sourceware.org/git/?p=glibc.git;a=blob_plain;f=advisories/GLIBC-SA-2026-0015
• http://www.openwall.com/lists/oss-security/2026/08/27/6