CVE-2026-40356

Katalog CVE

CVSS 7.5 · High EPSS 0,78%

Kerentanan Integer Underflow (Wrap or Wraparound) pada mit kerberos 5. Skor CVSS 3.1 7.5 (High) menurut NVD.

Deskripsi (NVD)

In MIT Kerberos 5 (aka krb5) before 1.22.3, there is an integer underflow and resultant out-of-bounds read if an application calls gss_accept_sec_context() on a system with a NegoEx mechanism registered in /etc/gss/mech. An unauthenticated remote attacker can trigger this, possibly causing the process to terminate in parse_message.

Rincian

Terbit di NVD

28 April 2026

Terakhir diubah

8 Juli 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-191: Integer Underflow (Wrap or Wraparound)

EPSS (30 hari)

0,78% peluang dieksploitasi; lebih tinggi dari 54,8% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://web.mit.edu/kerberos/advisories/ advisory vendor
• https://cems.fun/2026/04/27/krb5-two-unauthenticated-network-vulnerabilities.html exploit · advisory pihak ketiga · patch
• https://github.com/krb5/krb5/commit/2e75f0d9362fb979f5fc92829431a590a130929f patch