CVE-2026-58050

Katalog CVE

CVSS 7.5 · High EPSS 0,44%

Kerentanan Integer Overflow or Wraparound pada libssh2. Skor CVSS 3.1 7.5 (High) menurut NVD.

Deskripsi (NVD)

libssh2 through 1.11.1 reads an attacker-controlled 32-bit attribute count from a publickey-subsystem response and uses it in the allocation num_attrs * sizeof(libssh2_publickey_attribute) without bounds checking, so on 32-bit platforms the multiplication overflows to an undersized buffer. A malicious SSH server can then drive the attribute-parsing loop to write past the allocation, causing a heap buffer overflow in a connecting libssh2 client.

Rincian

Terbit di NVD

28 Juni 2026

Terakhir diubah

30 Juni 2026

Status NVD

Analyzed

CVSS 3.1

7.5 (High), sumber NVD
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-190: Integer Overflow or Wraparound

EPSS (30 hari)

0,44% peluang dieksploitasi; lebih tinggi dari 36,8% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://www.vulncheck.com/advisories/libssh2-integer-overflow-in-publickey-subsystem-attribute-allocation advisory pihak ketiga
• https://github.com/bikini/exploitarium/tree/main/libssh2-publickey-list-calc-poc broken link
• https://github.com/libssh2/libssh2/blob/master/src/publickey.c product