CVE-2017-11462

9.8 CRITICAL 5% exploit odds Fix listed Memory safety

What it is

Double free vulnerability in MIT Kerberos 5 (aka krb5) allows attackers to have unspecified impact via vectors involving automatic deletion of security contexts on error.

At a glance

Exploitability: Can be exploited over the network without logging in. High risk of data exposure, data tampering, service disruption.
Exploit odds: 5.5% chance of exploitation in the next 30 days (EPSS).
Fix: A patch, advisory or fixed version is referenced. Upgrade or apply it.

Timeline

2017-09-13 16:29 UTC PublishedDisclosed publicly on CVE.org and NVD
2026-06-17 01:01 UTC Last updatedMost recent change to the record

Why it ranks here

Exploited in the wild: no, CISA does not list it.
Exploit odds: 5.5% in the next 30 days (EPSS).
Severity: 9.8 CRITICAL (CVSS).
Fix: a patch or advisory is linked.

Details

Published: 2017-09-13 16:29 UTC
Last modified: 2026-06-17 01:01 UTC
Exploit probability: 5.5% · EPSS, next 30 days
Weakness: CWE-415
Record status: Modified

Affected

Mit Kerberos 5 1.14
Mit Kerberos 5 1.14.1
Mit Kerberos 5 1.14.2
Mit Kerberos 5 1.14.3
Mit Kerberos 5 1.14.4
Mit Kerberos 5 1.14.5
Mit Kerberos 5 1.15
Mit Kerberos 5 1.15.1

Attack profile CVSS 3.0 · 9.8

Attack vector: Network
Complexity: Low
Privileges needed: None
User interaction: None
Scope: Unchanged
Confidentiality: High
Integrity: High
Availability: High

Raw vector

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Is it in your code?

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Fix and advisories

References

NVD record · CVE.org record