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I. Basic Information for CVE-2026-40355
Vulnerability Information
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Vulnerability Title
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Description
In MIT Kerberos 5 (aka krb5) before 1.22.3, there is a NULL pointer dereference 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, causing the process to terminate in parse_nego_message.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
Source: NVD (National Vulnerability Database)
Vulnerability Type
空指针解引用
Source: NVD (National Vulnerability Database)
Affected Products
VendorProductAffected VersionsCPESubscribe
MITKerberos 5 1.18 ~ 1.22.3 -
II. Public POCs for CVE-2026-40355
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III. Intelligence Information for CVE-2026-40355
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IV. Related Vulnerabilities
Same product: Kerberos 5
Same vendor: MIT
Same weakness: CWE-476
V. Comments for CVE-2026-40355

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