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CVE-2015-8629

16
FAUCET Score

CVE-2015-8629 describes an out-of-bounds read vulnerability in the xdr_nullstring function within kadmind in MIT Kerberos 5 versions prior to 1.13.4 and 1.14.1. This flaw, affecting products like Debian, MIT, OpenSUSE, Oracle, and Red Hat, allows remote authenticated users to trigger a denial of service or information disclosure by providing a specially crafted string that lacks expected null terminators. Rated as Medium severity (CVSS 5.3), exploitation requires authenticated access and high attack complexity, but does not involve user interaction. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
< 1.13.4CPE matchmatch criteria
cpe:2.3:a:mit:kerberos_5:*:*:*:*:*:*:*:*
>= 1.14, < 1.14.1CPE matchmatch criteria
cpe:2.3:a:mit:kerberos_5:*:*:*:*:*:*:*:*
6CPE matchmatch criteria
cpe:2.3:o:oracle:linux:6:-:*:*:*:*:*:*
7CPE matchmatch criteria
cpe:2.3:o:oracle:linux:7:-:*:*:*:*:*:*
10CPE matchmatch criteria
cpe:2.3:o:oracle:solaris:10:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

5.3MEDIUM

CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N

Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
Exploitability Score
1.6
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
3.66%
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 0.0366 is in the 94th percentile among its peer group of 1,428 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 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (4)

github_advisorypatch availablevia nvd_reference
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: krb5-0:1.10.3-42z1.el6_7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: krb5-0:1.13.2-12.el7_2
View patch
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: krb5

Vendor Advisories (1)

redhatCVE-2015-8629Low

krb5: xdr_nullstring() doesn't check for terminating null character

Jan 8, 2016

References

krbdev.mit.edu / rt/Ticket/Display.html
Vendor Advisory
lists.opensuse.org / opensuse-updates/2016-02/msg00059.html
Mailing ListThird Party Advisory
lists.opensuse.org / opensuse-updates/2016-02/msg00110.html
Mailing ListThird Party Advisory
rhn.redhat.com / errata/RHSA-2016-0493.html
Third Party Advisory
rhn.redhat.com / errata/RHSA-2016-0532.html
Third Party Advisory
github.com / krb5/krb5/commit/df17a1224a3406f57477bcd372c61e04c0e5a5bb
PatchThird Party Advisory
debian.org / security/2016/dsa-3466
Third Party Advisory
oracle.com / technetwork/topics/security/bulletinapr2016-2952098.html
Third Party Advisory
oracle.com / technetwork/topics/security/linuxbulletinapr2016-2952096.html
Third Party Advisory
securityfocus.com / bid/82801
Third Party AdvisoryVDB Entry
securitytracker.com / id/1034914
Third Party AdvisoryVDB Entry