CVE-2026-58051

Katalog CVE

CVSS 6.5 · Medium EPSS 0,28%

Kerentanan Use of Uninitialized Resource pada libssh2. Skor CVSS 3.1 6.5 (Medium) menurut vulncheck.com.

Deskripsi (NVD)

libssh2 through 1.11.1 grows its publickey list with SSH2_REALLOC but does not zero-initialize new entries before parsing populates them, so a parse failure reaching the cleanup path leaves libssh2_publickey_list_free operating on an uninitialized entry. A malicious SSH server offering the publickey subsystem can use a malformed response to make cleanup free an uninitialized, attacker-influenceable attrs pointer in a connecting libssh2 client.

Rincian

Terbit di NVD

28 Juni 2026

Terakhir diubah

30 Juni 2026

Status NVD

Analyzed

CVSS 3.1

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

Jenis kelemahan (CWE)

CWE-908: Use of Uninitialized Resource

EPSS (30 hari)

0,28% peluang dieksploitasi; lebih tinggi dari 18,6% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://www.vulncheck.com/advisories/libssh2-free-of-uninitialized-pointer-in-publickey-list-cleanup 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