CVE-2026-40356
PoC —CVSS 3.1
7.5 high
EPSS
<1%p47
Published
()
Modified
Description
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.
- Vendors
- mit
- Products
- kerberos 5
- Weakness
- CWE-191
- Vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
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