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CVE-2015-2694

17
FAUCET Score

CVE-2015-2694 describes a vulnerability in the kdcpreauth modules of MIT Kerberos 5 versions 1.12.x and 1.13.x prior to 1.13.2. This flaw allows remote attackers to bypass preauthentication requirements by sending zero bytes of data or an arbitrary realm name. Rated with a CVSS score of 5.8, this medium-severity vulnerability has a network attack vector and medium attack complexity, potentially leading to partial confidentiality and integrity impacts. There is no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
1.12CPE matchmatch criteria
cpe:2.3:a:mit:kerberos_5:1.12:*:*:*:*:*:*:*
1.12.1CPE matchmatch criteria
cpe:2.3:a:mit:kerberos_5:1.12.1:*:*:*:*:*:*:*
1.12.2CPE matchmatch criteria
cpe:2.3:a:mit:kerberos_5:1.12.2:*:*:*:*:*:*:*
1.12.3CPE matchmatch criteria
cpe:2.3:a:mit:kerberos_5:1.12.3:*:*:*:*:*:*:*
1.13CPE matchmatch criteria
cpe:2.3:a:mit:kerberos_5:1.13:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

5.8MEDIUM

AV:N/AC:M/Au:N/C:P/I:P/A:N

Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
NONE
Access Vector
NETWORK
Access Complexity
MEDIUM
Authentication
NONE
Exploitability Score
8.6
Impact Score
4.9
CvssVersion
2.0

Exploit Intelligence

EPSS Score
2.84%
Probability of exploitation in next 30 days
EPSS Percentile
85.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0284 is in the 77th percentile among its peer group of 19,958 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, 0.0 Bluesky, 0.0 Mastodon, and 0.2 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 (2)

redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: krb5-0:1.13.2-10.el7
View patch
github_advisoryvendor investigatingvia nvd_reference
View patch

Vendor Advisories (1)

redhatCVE-2015-2694Moderate

krb5: issues in OTP and PKINIT kdcpreauth modules leading to requires_preauth bypass

Apr 27, 2015

References

krbdev.mit.edu / rt/Ticket/Display.html
Vendor Advisory
github.com / krb5/krb5/commit/e3b5a5e5267818c97750b266df50b6a3d4649604
Vendor Advisory
oracle.com / technetwork/topics/security/linuxbulletinoct2015-2719645.html
securityfocus.com / bid/74824
ubuntu.com / usn/USN-2810-1