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CVE-2011-1530

24
FAUCET Score

CVE-2011-1530 describes a denial-of-service vulnerability in MIT Kerberos 5 (versions 1.9 through 1.9.2). A remote authenticated user can crash the Key Distribution Center (KDC) daemon by sending a specially crafted TGS request, leading to a NULL pointer dereference. This vulnerability has a CVSS score of 6.8, indicating high severity with low attack complexity and a complete impact on availability. There is no evidence of active exploitation, nor are there publicly available exploit modules in Metasploit or Nuclei. Community discussion is minimal, with only one mention found.

Impacted Technologies

VendorProductVersion(s)CPE
5.1.9CPE matchmatch criteria
cpe:2.3:a:mit:mit_kerberos:5.1.9:*:*:*:*:*:*:*
5.1.9.1CPE matchmatch criteria
cpe:2.3:a:mit:mit_kerberos:5.1.9.1:*:*:*:*:*:*:*
5.1.9.2CPE matchmatch criteria
cpe:2.3:a:mit:mit_kerberos:5.1.9.2:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

6.8MEDIUM

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

Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
COMPLETE
Access Vector
NETWORK
Access Complexity
LOW
Authentication
SINGLE
Exploitability Score
8.0
Impact Score
6.9
CvssVersion
2.0

Exploit Intelligence

EPSS Score
2.38%
Probability of exploitation in next 30 days
EPSS Percentile
82.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0238 is in the 93rd percentile among its peer group of 21,957 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.1 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 (1)

redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: krb5-0:1.9-22.el6_2.1
View patch

Vendor Advisories (1)

redhatCVE-2011-1530Moderate

(krb5kdc): NULL pointer dereference in the TGS handling (MITKRB5-SA-2011-007)

Dec 6, 2011

References

secunia.com / advisories/47124
Vendor Advisory
securitytracker.com / id
exchange.xforce.ibmcloud.com / vulnerabilities/71655
web.mit.edu / kerberos/advisories/MITKRB5-SA-2011-007.txt
Patch
mandriva.com / security/advisories
redhat.com / support/errata/RHSA-2011-1790.html
securityfocus.com / archive/1/520756/100/0/threaded
securityfocus.com / bid/50929