CVE-2015-2696

lib/gssapi/krb5/iakerb.c in MIT Kerberos 5 (aka krb5) before 1.14 relies on an inappropriate context handle, which allows remote attackers to cause a denial of service (incorrect pointer read and process crash) via a crafted IAKERB packet that is mishandled during a gss_inquire_context call.

Published: 2015-11-08 Last update: 2026-06-16 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2015-2696 is rated Moderate Risk (55/100): CVSS High severity, with high exploitation likelihood (EPSS 4.54%, 90th percentile). EPSS ranks this CVE among the most likely to be exploited in the near term. High exploitation likelihood—assess exposure and prioritize remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2015-2696

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 10.77% 4.54% -6.22%
2 2026-05-13 8.28% 10.77% +2.48%
3 2025-12-28 — 8.28% —

Full EPSS history (14 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2015-2696

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
7.1 2.0 HIGH
AV:N/AC:M/Au:N/C:N/I:N/A:C Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:M)
Exploitation needs some favorable conditions, but not exceptional ones.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:N)
No confidentiality impact.
Integrity impact (I:N)
No integrity impact.
Availability impact (A:C)
Complete availability impact.
 8.6 6.9 [email protected]

Weakness enumeration for CVE-2015-2696

OS Trackers for CVE-2015-2696

vendor priority summary link
debian not yet assigned CVE-2015-2696 not yet assigned priority: Debian including 1 source packages (krb5), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. https://security-tracker.debian.org/tracker/CVE-2015-2696
gentoo normal CVE-2015-2696: 1 GLSA(s) (201611-14), 1 atom(s) (app-crypt/mit-krb5); latest impact normal. https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2015-2696
redhat medium — https://access.redhat.com/security/cve/CVE-2015-2696
suse high CVE-2015-2696 severity important: SUSE including 373 source package names (amazon/suse-sles-15-sp1-chost-byos-v20210304-hvm-ssd-x86_64, amazon/suse-sles-15-sp1-chost-byos-v20220127-hvm-ssd-x86_64, …), 570 product×package rows across 70 product lines (HPE Helion OpenStack 8, SUSE Linux Enterprise Desktop 11 SP3, … (70 product lines)): Fixed 271, Known Affected 157, Known Not Affected 142. https://www.suse.com/security/cve/CVE-2015-2696/
ubuntu medium CVE-2015-2696 medium priority: Ubuntu including 1 source packages (krb5), 5 status rows across 5 suites (precise, trusty, upstream, vivid, wily): released 5. https://ubuntu.com/security/CVE-2015-2696

Affected software / configurations for CVE-2015-2696

Vendor Product Version Raw CPE
mit kerberos_5 < 1.14 cpe:2.3:a:mit:kerberos_5:*:*:*:*:*:*:*:*
opensuse leap 42.1 cpe:2.3:o:opensuse:leap:42.1:*:*:*:*:*:*:*
opensuse opensuse 13.1 cpe:2.3:o:opensuse:opensuse:13.1:*:*:*:*:*:*:*
opensuse opensuse 13.2 cpe:2.3:o:opensuse:opensuse:13.2:*:*:*:*:*:*:*
suse linux_enterprise_desktop 12 cpe:2.3:o:suse:linux_enterprise_desktop:12:-:*:*:*:*:*:*
suse linux_enterprise_server 12 cpe:2.3:o:suse:linux_enterprise_server:12:-:*:*:*:*:*:*
suse linux_enterprise_software_development_kit 12 cpe:2.3:o:suse:linux_enterprise_software_development_kit:12:-:*:*:*:*:*:*
debian debian_linux 7.0 cpe:2.3:o:debian:debian_linux:7.0:*:*:*:*:*:*:*
debian debian_linux 8.0 cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*
debian debian_linux 9.0 cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
canonical ubuntu_linux 12.04 cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:-:*:*:*
canonical ubuntu_linux 14.04 cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:esm:*:*:*
canonical ubuntu_linux 15.04 cpe:2.3:o:canonical:ubuntu_linux:15.04:*:*:*:*:*:*:*
canonical ubuntu_linux 15.10 cpe:2.3:o:canonical:ubuntu_linux:15.10:*:*:*:*:*:*:*

References for CVE-2015-2696

URL Tags
http://krbdev.mit.edu/rt/Ticket/Display.html?id=8244 Vendor Advisory
http://lists.opensuse.org/opensuse-security-announce/2015-11/msg00006.html Mailing List Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2015-11/msg00014.html Mailing List Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2015-11/msg00022.html Mailing List Third Party Advisory
http://www.debian.org/security/2015/dsa-3395 Third Party Advisory
http://www.securityfocus.com/bid/90675 Third Party Advisory VDB Entry
http://www.securitytracker.com/id/1034084 Third Party Advisory VDB Entry
http://www.ubuntu.com/usn/USN-2810-1 Third Party Advisory
https://github.com/krb5/krb5/commit/e04f0283516e80d2f93366e0d479d13c9b5c8c2a Patch Third Party Advisory
https://security.gentoo.org/glsa/201611-14 Third Party Advisory
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