CVE-2026-77641

Katalog CVE

CVSS 8.2 · High EPSS 0,35%

Kerentanan Unchecked Return Value pada torproject tor. Skor CVSS 3.1 8.2 (High) menurut NVD.

Deskripsi (NVD)

tor before 0.4.9.9 was prone to a NULL write after free when sending a CONFLUX_SWITCH cell fails. The return value of relay_send_command_from_edge() was ignored, so a send failure (which calls circuit_mark_for_close() and removes the leg via cfx_del_leg()) would go undetected, causing the caller to write to the now-freed current leg and resulting in a crash. This is TROVE-2026-017.

Rincian

Terbit di NVD

20 Agustus 2026

Terakhir diubah

8 September 2026

Status NVD

Analyzed

CVSS 3.1

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

Jenis kelemahan (CWE)

CWE-252: Unchecked Return Value

EPSS (30 hari)

0,35% peluang dieksploitasi; lebih tinggi dari 27,1% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://gitlab.torproject.org/tpo/core/tor/-/raw/tor-0.4.9.9/ChangeLog release notes · advisory vendor