CVE-2026-56766

Katalog CVE

CVSS 8.8 · High EPSS 2,4%

Kerentanan Stack-based Buffer Overflow. Skor CVSS 3.1 8.8 (High) menurut vulncheck.com.

Deskripsi (NVD)

Hydra through 9.7, fixed in commit 9cc84c2, contains a stack buffer overflow in NTLM authentication across SMTP, POP3, IMAP, NNTP, HTTP, HTTP-Proxy, and HTTP-Proxy-Urlenum modules when processing malicious NTLM Type-2 challenges. A malicious server can send a crafted NTLM Type-2 challenge with an excessively long domain string, causing base64-encoded response data to overflow a 500-byte stack buffer by 18 to 330 bytes, enabling remote code execution on systems without stack protection.

Rincian

Terbit di NVD

25 Juni 2026

Terakhir diubah

14 Juli 2026

Status NVD

Deferred

CVSS 3.1

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

Jenis kelemahan (CWE)

CWE-121: Stack-based Buffer Overflow

EPSS (30 hari)

2,4% peluang dieksploitasi; lebih tinggi dari 83,8% CVE lain

Produk dan versi terdampak

NVD belum mencantumkan data produk (CPE) untuk CVE ini. Produk yang terdampak biasanya disebut di deskripsi dan di advisory vendor pada daftar referensi.

Referensi dan perbaikan

• https://github.com/vanhauser-thc/thc-hydra/commit/9cc84c20e75f5fef6bb1790bb9ada2afad2204e2
• https://www.vulncheck.com/advisories/hydra-stack-buffer-overflow-in-ntlm-authentication-handler