What is CVE-2010-1322?

CVE-2010-1322 is a vulnerability in Mit Kerberos 5, classified under Improper Input Validation. Published 2010-10-07.

Is CVE-2010-1322 known to be exploited?

2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Improper input validation in Mit Kerberos 5

CVE-2010-1322

The merge_authdata function in kdc_authdata.c in the Key Distribution Center (KDC) in MIT Kerberos 5 (aka krb5) 1.8.x before 1.8.4 does not properly manage an index into an authorization-data list, which allows remote attackers to cause a denial of service (daemon crash), or possibly obtain sensitive information, spoof authorization, or execute arbitrary code, via a TGS request that triggers an uninitialized pointer dereference, as demonstrated by a request from a Windows Active Directory client.

Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)

Published 2010-10-07 · last modified 2026-06-16.

CVSS v2 metric

CVSS v2 base score 6.5 (Medium). Vector: AV:N/AC:L/Au:S/C:P/I:P/A:P. This CVE predates CVSS v3 and has no v3 score from NVD.

EPSS exploit prediction

EPSS: 0.030 (87.0th percentile), scored 2026-09-29.

Low probability of exploitation in the next 30 days, but still tracked. 87th percentile — 87.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.030 · newest: 0.030 · change: 0.000

Affected products

Mit Kerberos 5 — versions 1.8.1, 1.8.2, 1.8.3

Weakness classification (CWE)

CWE-20 — Improper Input Validation

Public proof-of-concept exploits

References

www.mandriva.com/security/advisories (vendor-advisory)
www.securityfocus.com/bid/43756 (Patch, vdb-entry)
web.mit.edu/kerberos/advisories/MITKRB5-SA-2010-006.txt (Patch, Vendor Advisory)
www.securityfocus.com/archive/1/514144/100/0/threaded (mailing-list)
www.vupen.com/english/advisories/2010/2865 (vdb-entry)
www.redhat.com/support/errata/RHSA-2010-0863.html (vendor-advisory)
lists.opensuse.org/opensuse-security-announce/2010-10/msg00006.html (vendor-advisory)
www.ubuntu.com/usn/USN-999-1 (vendor-advisory)

Frequently asked questions

What is CVE-2010-1322?: CVE-2010-1322 is a vulnerability in Mit Kerberos 5, classified under Improper Input Validation. Published 2010-10-07.
Is CVE-2010-1322 known to be exploited?: 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.