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.
Advisories
No advisories yet.
Fixes
Solution
No solution given by the vendor.
Workaround
No workaround given by the vendor.
References
History
Tue, 28 Apr 2026 06:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| 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. | |
| First Time appeared |
Mit
Mit kerberos 5 |
|
| Weaknesses | CWE-191 | |
| CPEs | cpe:2.3:a:mit:kerberos_5:*:*:*:*:*:*:*:* | |
| Vendors & Products |
Mit
Mit kerberos 5 |
|
| References |
| |
| Metrics |
cvssV3_1
|
Projects
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Status: PUBLISHED
Assigner: mitre
Published:
Updated: 2026-04-28T05:23:13.610Z
Reserved: 2026-04-11T00:00:00.000Z
Link: CVE-2026-40356
No data.
Status : Received
Published: 2026-04-28T07:16:03.197
Modified: 2026-04-28T07:16:03.197
Link: CVE-2026-40356
No data.
OpenCVE Enrichment
Updated: 2026-04-28T07:30:26Z
Weaknesses