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CVE-2011-4151

24
FAUCET Score

CVE-2011-4151 describes a denial-of-service vulnerability in the MIT Kerberos 5 KDC, specifically affecting versions 1.8 through 1.8.4 when using the Berkeley DB backend. Remote attackers can trigger an assertion failure and daemon exit through unspecified vectors. This vulnerability carries 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
1.8CPE 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
3.54%
Probability of exploitation in next 30 days
EPSS Percentile
88.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0354 is in the 79th percentile among its peer group of 51,485 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

Vendor Patches (1)

redhatno patchvia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: krb5

Vendor Advisories (1)

redhatCVE-2011-4151Moderate

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

Oct 18, 2011

References

exchange.xforce.ibmcloud.com / vulnerabilities/70891
web.mit.edu / kerberos/advisories/MITKRB5-SA-2011-006.txt
Vendor Advisory
kb.cert.org / vuls/id/659251
US Government Resource