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CVE-2011-1528

26
FAUCET Score

CVE-2011-1528 describes a denial-of-service vulnerability in MIT Kerberos 5 (versions 1.8 through 1.8.4 and 1.9 through 1.9.1) when using the LDAP back end. Remote attackers can trigger an assertion failure and daemon exit in the Key Distribution Center (KDC) through unspecified vectors related to the locked_check_p function. With a CVSS score of 7.8, this vulnerability is considered high severity due to its network-based attack vector, low attack complexity, and complete 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
1.8CPE matchmatch criteria
cpe:2.3:a:mit:kerberos_5:1.8:*:*:*:*:*:*:*
1.8.1CPE matchmatch criteria
cpe:2.3:a:mit:kerberos_5:1.8.1:*:*:*:*:*:*:*
1.8.2CPE matchmatch criteria
cpe:2.3:a:mit:kerberos_5:1.8.2:*:*:*:*:*:*:*
1.8.3CPE matchmatch criteria
cpe:2.3:a:mit:kerberos_5:1.8.3:*:*:*:*:*:*:*
1.8.4CPE matchmatch criteria
cpe:2.3:a:mit:kerberos_5:1.8.4:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

7.8HIGH

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

Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
COMPLETE
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Exploitability Score
10.0
Impact Score
6.9
CvssVersion
2.0

Exploit Intelligence

EPSS Score
4.18%
Probability of exploitation in next 30 days
EPSS Percentile
89.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-24
Model: v2026.06.15
This CVE's current EPSS score of 0.0418 is in the 82nd percentile among its peer group of 51,455 CVEs.

Social Chatter

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

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 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: krb5-0:1.9-9.el6_1.2
View patch

Vendor Advisories (1)

redhatCVE-2011-1528Moderate

krb5: KDC denial of service vulnerabilities (MITKRB5-SA-2011-006)

Oct 18, 2011

References

lists.opensuse.org / opensuse-security-announce/2011-10/msg00009.html
bugs.launchpad.net / ubuntu/+source/krb5/+bug/715579
web.mit.edu / kerberos/advisories/MITKRB5-SA-2011-006.txt
Vendor Advisory
kb.cert.org / vuls/id/659251
US Government Resource
mandriva.com / security/advisories
mandriva.com / security/advisories
redhat.com / support/errata/RHSA-2011-1379.html
Vendor Advisory