CVE-2026-42512

Katalog CVE

CVSS 8.1 · High EPSS 1,8%

Kerentanan Heap-based Buffer Overflow pada freebsd. Skor CVSS 3.1 8.1 (High) menurut CISA ADP.

Deskripsi (NVD)

As dhclient is building an environment to pass to dhclient-script, it may need to resize the array of string pointers. The code which expands the array incorrectly calculates its new size when requesting memory, resulting in a heap buffer overrun. A specially crafted packet can cause dhclient to overrun its buffer of environment entries. This can result in a crash, but it may be possible to leverage this bug to achieve remote code execution.

Rincian

Terbit di NVD

30 April 2026

Terakhir diubah

17 Juni 2026

Status NVD

Modified

CVSS 3.1

8.1 (High), sumber CISA ADP
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H · uraikan di kalkulator

Jenis kelemahan (CWE)

CWE-122: Heap-based Buffer Overflow

EPSS (30 hari)

1,8% peluang dieksploitasi; lebih tinggi dari 78,1% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://security.freebsd.org/advisories/FreeBSD-SA-26:15.dhclient.asc advisory vendor