CVE-2026-40613

Katalog CVE

CVSS 7.5 · High EPSS 1,5%

Kerentanan Incorrect Type Conversion or Cast pada coturn project coturn. Skor CVSS 3.1 7.5 (High) menurut github.com.

Deskripsi (NVD)

Coturn is a free open source implementation of TURN and STUN Server. Prior to 4.10.0, the STUN/TURN attribute parsing functions in coturn perform unsafe pointer casts from uint8_t * to uint16_t * without alignment checks. When processing a crafted STUN message with odd-aligned attribute boundaries, this results in misaligned memory reads at ns_turn_msg.c. On ARM64 architectures (AArch64) with strict alignment enforcement, this causes a SIGBUS signal that immediately kills the turnserver process. An unauthenticated remote attacker can crash any ARM64 coturn deployment by sending a single crafted UDP packet. This vulnerability is fixed in 4.10.0.

Rincian

Terbit di NVD

21 April 2026

Terakhir diubah

17 Juni 2026

Status NVD

Analyzed

CVSS 3.1

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

Jenis kelemahan (CWE)

CWE-704: Incorrect Type Conversion or Cast

EPSS (30 hari)

1,5% peluang dieksploitasi; lebih tinggi dari 74,0% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://github.com/coturn/coturn/security/advisories/GHSA-j662-9wcj-mf36 exploit · advisory vendor