CVE-2015-2697

What it is

The build_principal_va function in lib/krb5/krb/bld_princ.c in MIT Kerberos 5 (aka krb5) before 1.14 allows remote authenticated users to cause a denial of service (out-of-bounds read and KDC crash) via an initial '\0' character in a long realm field within a TGS request.

At a glance

Exploitability

Can be exploited over the network with a login. Limited direct impact.

Exploit odds

4.0% chance of exploitation in the next 30 days (EPSS).

Fix

A patch, advisory or fixed version is referenced. Upgrade or apply it.

Timeline

1. 2015-11-09 03:59 UTC PublishedDisclosed publicly on CVE.org and NVD
2. 2026-06-17 00:24 UTC Last updatedMost recent change to the record

Why it ranks here

• Exploited in the wild: no, CISA does not list it.
• Exploit odds: 4.0% in the next 30 days (EPSS).
• Severity: 4.0 MEDIUM (CVSS).
• Fix: a patch or advisory is linked.

Details

Published

2015-11-09 03:59 UTC

Last modified

2026-06-17 00:24 UTC

Exploit probability

4.0% · EPSS, next 30 days

Weakness

CWE-125 · Out-of-bounds read

Record status

Modified

Affected

• Mit Kerberos 5 < 1.14
• Oracle Solaris 11.3
• Canonical Ubuntu Linux 12.04
• Canonical Ubuntu Linux 14.04
• Canonical Ubuntu Linux 15.04
• Canonical Ubuntu Linux 15.10
• Debian Linux 7.0
• Debian Linux 8.0

Attack profile CVSS 2.0 · 4.0

Attack vector

Network

Complexity

Low

Authentication

Single

Confidentiality

None

Integrity

None

Availability

Partial

Is it in your code?

Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.

Read https://cve-list.com/agent/cve/CVE-2015-2697.md and follow it. Check whether this project is affected by CVE-2015-2697. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.

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