Predictive Vulnerability Intelligence.

Product

  • Product
  • Pricing
  • Documentation

Company

  • About
  • Partnerships
  • Blog
  • Support

Legal

  • Terms
  • Privacy
  • Data Licensing

© 2026 FAUCET Technologies LLC. All rights reserved.

CVE-2011-1527

25
FAUCET Score

CVE-2011-1527 describes a denial-of-service vulnerability in the kdb_ldap plugin of MIT Kerberos 5 (versions 1.9-1.9.1) when using an LDAP backend. An unauthenticated remote attacker can crash the KDC daemon by sending a kinit request with an incorrectly cased realm, leading to a NULL pointer dereference. This vulnerability has a high severity CVSS score of 7.8, indicating a network-based attack with low complexity and a complete impact on availability. There is no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
1.9CPE matchmatch criteria
cpe:2.3:a:mit:kerberos_5:1.9:*:*:*:*:*:*:*
1.9.1CPE matchmatch criteria
cpe:2.3:a:mit:kerberos_5:1.9.1:*:*:*:*:*:*:*

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
3.65%
Probability of exploitation in next 30 days
EPSS Percentile
88.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0365 is in the 79th percentile among its peer group of 51,506 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-2011-1527Moderate

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

Oct 18, 2011

References

bugs.debian.org / cgi-bin/bugreport.cgi
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
redhat.com / support/errata/RHSA-2011-1379.html
Vendor Advisory