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CVE-2012-1016

20
FAUCET Score

CVE-2012-1016 describes a denial-of-service vulnerability in the MIT Kerberos 5 Key Distribution Center (KDC) affecting versions prior to 1.10.4. A remote attacker can trigger a NULL pointer dereference, causing the KDC daemon to crash, by sending a specially crafted Draft 9 request to the PKINIT implementation. This vulnerability has a CVSS score of 5.0, indicating a medium severity due to its network-based attack vector, low attack complexity, and partial availability impact. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
< 1.10.4CPE matchmatch criteria
cpe:2.3:a:mit:kerberos_5:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

5.0MEDIUM

AV:N/AC:L/Au:N/C:N/I:N/A:P

Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Exploitability Score
10.0
Impact Score
2.9
CvssVersion
2.0

Exploit Intelligence

EPSS Score
2.58%
Probability of exploitation in next 30 days
EPSS Percentile
83.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0258 is in the 76th percentile among its peer group of 23,701 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (2)

github_advisorypatch availablevia nvd_reference
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: krb5-0:1.10.3-10.el6_4.1
View patch

Vendor Advisories (1)

redhatCVE-2012-1016Moderate

krb5: PKINIT null pointer deref leads to DoS

Feb 15, 2013

References

krbdev.mit.edu / rt/Ticket/Display.html
Vendor Advisory
secunia.com / advisories/55040
Third Party Advisory
github.com / krb5/krb5/commit/db64ca25d661a47b996b4e2645998b5d7f0eb52c
PatchThird Party Advisory
web.mit.edu / kerberos/www/krb5-1.10
Release NotesVendor Advisory