CVE-2026-12244

Katalog CVE

CVSS 8.8 · High EPSS 0,49%

Kerentanan Heap-based Buffer Overflow pada nlnetlabs nsd. Skor CVSS 3.1 8.8 (High) menurut NVD.

Deskripsi (NVD)

If NSD is configured as secondary for a zone, the primary of that zone can crash NSD with an AXFR containing a DNS message with a special crafted SVCB RR with an rdata size of 65512, that let's an (uint16_t) variable that is used to allocate space needed for the RR wrap (because total size > 65535), causing a heap overflow. The attacker can perform a controlled (RCE class) head write of up to 65509 bytes

Rincian

Terbit di NVD

25 Juni 2026

Terakhir diubah

26 Juni 2026

Status NVD

Analyzed

CVSS 3.1

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

Jenis kelemahan (CWE)

CWE-122: Heap-based Buffer Overflow
CWE-190: Integer Overflow or Wraparound

EPSS (30 hari)

0,49% peluang dieksploitasi; lebih tinggi dari 40,2% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://www.nlnetlabs.nl/downloads/nsd/CVE-2026-12244.txt patch · advisory vendor