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NVD / CVE Program· CNA mitre

CVE-2014-9421: The auth_gssapi_unwrap_data function in lib/rpc/auth_gssapi_misc.c in MIT Kerberos 5 (aka krb5) through 1.11.5, 1.12.x through 1.12.2, and 1

Noroxi assessment

Priority: Monitor (action score 38/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 6.2% (FIRST EPSS); higher than 93.5% of all records.
  • No special conditions are required; it is repeatable.
  • Fixed version: krb5 (Debian:12) 1.12.1+dfsg-17; krb5 (Debian:6.0) 1.8.3+dfsg-4squeeze9; krb5 (Debian:7) 1.10.1+dfsg-5+deb7u3.

Low priority for now. Upgrade to krb5 (Debian:12) 1.12.1+dfsg-17; krb5 (Debian:6.0) 1.8.3+dfsg-4squeeze9; krb5 (Debian:7) 1.10.1+dfsg-5+deb7u3 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

The auth_gssapi_unwrap_data function in lib/rpc/auth_gssapi_misc.c in MIT Kerberos 5 (aka krb5) through 1.11.5, 1.12.x through 1.12.2, and 1.13.x before 1.13.1 does not properly handle partial XDR deserialization, which allows remote authenticated users to cause a denial of service (use-after-free and double free, and daemon crash) or possibly execute arbitrary code via malformed XDR data, as demonstrated by data sent to kadmind.

CriticalCVSS 9.0 · v2.0—No exploit Fix available
Published
Feb 19, 2015
Updated
Jun 16, 2026
EPSS
6.2% · 93th percentile
CWE
—

Report tools

JSON

Action score

38

Monitor

Low priority for now.

CVSS
36 / 40 · 9.0 / 10
CISA KEV
0 / 30 · Not listed
EPSS
2 / 30 · 6.2%

Get told when this record changes

  • Not in KEV: no record of exploitation in the wild
  • No public exploit code on record
  • A fix has been released

If any of these changes, we'll tell you in the daily email digest.

Follow CVE-2014-9421

When you'll hear from us

  • when it enters CISA KEV
  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
  • when EPSS rises 20 points in a week

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

VendorProduct
mitkerberos 5

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • mit kerberos 51.11
  • mit kerberos 51.11.1
  • mit kerberos 51.11.2
  • mit kerberos 51.11.3
  • mit kerberos 51.11.4
  • mit kerberos 51.11.5
  • mit kerberos 51.12
  • mit kerberos 51.12.1
  • mit kerberos 51.12.2
  • mit kerberos 51.13

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
Debian:12krb5before 1.12.1+dfsg-171.12.1+dfsg-17
Debian:6.0krb5before 1.8.3+dfsg-4squeeze91.8.3+dfsg-4squeeze9
Debian:7krb5before 1.10.1+dfsg-5+deb7u31.10.1+dfsg-5+deb7u3
Red Hat:enterprise_linux:6::clientkrb5before 0:1.10.3-37.el6_60:1.10.3-37.el6_6
Red Hat:enterprise_linux:6::clientkrb5-debuginfobefore 0:1.10.3-37.el6_60:1.10.3-37.el6_6
Red Hat:enterprise_linux:6::clientkrb5-develbefore 0:1.10.3-37.el6_60:1.10.3-37.el6_6
Red Hat:enterprise_linux:6::clientkrb5-libsbefore 0:1.10.3-37.el6_60:1.10.3-37.el6_6
Red Hat:enterprise_linux:6::clientkrb5-pkinit-opensslbefore 0:1.10.3-37.el6_60:1.10.3-37.el6_6
Red Hat:enterprise_linux:6::clientkrb5-serverbefore 0:1.10.3-37.el6_60:1.10.3-37.el6_6
Red Hat:enterprise_linux:6::clientkrb5-server-ldapbefore 0:1.10.3-37.el6_60:1.10.3-37.el6_6
Red Hat:enterprise_linux:6::clientkrb5-workstationbefore 0:1.10.3-37.el6_60:1.10.3-37.el6_6
Red Hat:enterprise_linux:7::clientkrb5before 0:1.12.2-14.el70:1.12.2-14.el7
Red Hat:enterprise_linux:7::clientkrb5-debuginfobefore 0:1.12.2-14.el70:1.12.2-14.el7
Red Hat:enterprise_linux:7::clientkrb5-develbefore 0:1.12.2-14.el70:1.12.2-14.el7
Red Hat:enterprise_linux:7::clientkrb5-libsbefore 0:1.12.2-14.el70:1.12.2-14.el7
Red Hat:enterprise_linux:7::clientkrb5-pkinitbefore 0:1.12.2-14.el70:1.12.2-14.el7
Red Hat:enterprise_linux:7::clientkrb5-serverbefore 0:1.12.2-14.el70:1.12.2-14.el7
Red Hat:enterprise_linux:7::clientkrb5-server-ldapbefore 0:1.12.2-14.el70:1.12.2-14.el7
Red Hat:enterprise_linux:7::clientkrb5-workstationbefore 0:1.12.2-14.el70:1.12.2-14.el7
SUSE:Linux Enterprise Software Development Kit 12krb5before 1.12.1-9.11.12.1-9.1

Same product

mit: all records

Other highest-scoring records for the same primary product.

  • CVE-2007-0956The telnet daemon (telnetd) in MIT krb5 before 1.6.1 allows remote attackers to bypass authentication and gain system access via a username
    49Plan
  • CVE-2011-0285The process_chpw_request function in schpw.c in the password-changing functionality in kadmind in MIT Kerberos 5 (aka krb5) 1.7 through 1.9
    46Plan
  • CVE-2001-0247Buffer overflows in BSD-based FTP servers allows remote attackers to execute arbitrary commands via a long pattern string containing a {} se
    46Plan

Published before and after this one in the same product

  • ← EarlierCVE-2014-5353Dec 16, 2014 · The krb5_ldap_get_password_policy_from_dn function in plugins/kdb/ldap/libkdb_ldap/ldap_pwd_policy.c in MIT Kerberos 5 (aka krb5) before 1.1
    15Monitor
  • ← EarlierCVE-2014-5352Feb 19, 2015 · The krb5_gss_process_context_token function in lib/gssapi/krb5/process_context_token.c in the libgssapi_krb5 library in MIT Kerberos 5 (aka
    38Monitor
  • Later →CVE-2014-9422Feb 19, 2015 · The check_rpcsec_auth function in kadmin/server/kadm_rpc_svc.c in kadmind in MIT Kerberos 5 (aka krb5) through 1.11.5, 1.12.x through 1.12.2
    25Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
debian:krb51.12.1+dfsg-17 · Debian:12Package registry (OSV)
red hat:krb50:1.12.2-14.el7 · Red Hat:enterprise_linux:7::clientPackage registry (OSV)
red hat:krb5-debuginfo0:1.12.2-14.el7 · Red Hat:enterprise_linux:7::clientPackage registry (OSV)
red hat:krb5-devel0:1.12.2-14.el7 · Red Hat:enterprise_linux:7::clientPackage registry (OSV)
red hat:krb5-libs0:1.12.2-14.el7 · Red Hat:enterprise_linux:7::clientPackage registry (OSV)
red hat:krb5-pkinit0:1.12.2-14.el7 · Red Hat:enterprise_linux:7::clientPackage registry (OSV)
red hat:krb5-pkinit-openssl0:1.10.3-37.el6_6 · Red Hat:enterprise_linux:6::clientPackage registry (OSV)
red hat:krb5-server0:1.12.2-14.el7 · Red Hat:enterprise_linux:7::clientPackage registry (OSV)
red hat:krb5-server-ldap0:1.12.2-14.el7 · Red Hat:enterprise_linux:7::clientPackage registry (OSV)
red hat:krb5-workstation0:1.12.2-14.el7 · Red Hat:enterprise_linux:7::clientPackage registry (OSV)
suse:krb51.12.1-9.1 · SUSE:Linux Enterprise Software Development Kit 12Package registry (OSV)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

No history yet (it accumulates with the daily EPSS job).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

Attack conditions

  • No special conditions are required; it is repeatable.

If successful

Confidentiality
C · data can be read
Integrity
C · data or configuration can be modified
Availability
C · the service can be disrupted
Attack complexity
Low
Confidentiality impact
C
Integrity impact
C
Availability impact
C

Weakness class (CWE)

—

CVSS vector

AV:N/AC:L/Au:S/C:C/I:C/A:C

nvd-primary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

MITRE has no CAPEC/ATT&CK mapping for this CWE.

Change log

  1. Fix✗ → ✓

For records you follow, these changes also arrive as notifications. →

References

Show all references (13 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records