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-2017-11368

18
FAUCET Score

CVE-2017-11368 describes an assertion failure vulnerability in MIT Kerberos 5 (versions 1.7 and later) that allows an authenticated attacker to crash the KDC by sending malformed S4U2Self or S4U2Proxy requests. This medium-severity vulnerability (CVSS 6.5) requires authentication and network access, leading to a high 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
25CPE matchmatch criteria
cpe:2.3:o:fedoraproject:fedora:25:*:*:*:*:*:*:*
26CPE matchmatch criteria
cpe:2.3:o:fedoraproject:fedora:26:*:*:*:*:*:*:*
5-1.13.7CPE matchmatch criteria
cpe:2.3:a:mit:kerberos:5-1.13.7:*:*:*:*:*:*:*
1.7CPE matchmatch criteria
cpe:2.3:a:mit:kerberos_5:1.7:*:*:*:*:*:*:*
1.7.1CPE matchmatch criteria
cpe:2.3:a:mit:kerberos_5:1.7.1:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

6.5MEDIUM

CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
2.8
Impact Score
3.6
CvssVersion
3.0

Exploit Intelligence

EPSS Score
2.40%
Probability of exploitation in next 30 days
EPSS Percentile
82.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-24
Model: v2026.06.15
This CVE's current EPSS score of 0.0240 is in the 93rd percentile among its peer group of 21,924 CVEs.

Social Chatter

No social media mentions found for this CVE.

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 (3)

github_advisorypatch availablevia nvd_reference
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: krb5-0:1.15.1-18.el7
View patch
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: krb5

Vendor Advisories (1)

redhatCVE-2017-11368Moderate

krb5: Invalid S4U2Self or S4U2Proxy request causes assertion failure

Jul 13, 2017

References

access.redhat.com / errata/RHSA-2018:0666
github.com / krb5/krb5/commit/ffb35baac6981f9e8914f8f3bffd37f284b85970
PatchThird Party Advisory
lists.fedoraproject.org / archives/list/package-announce%40lists.fedoraproject.org/message/4HNWXM6OQU7G23MG7XWIOBRGP43ECLDT
lists.fedoraproject.org / archives/list/package-announce%40lists.fedoraproject.org/message/UBUTXMNZWMVJLQ4NDX5OQFPUVCJRLV3W
securityfocus.com / bid/100291
Third Party AdvisoryVDB Entry