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01 Record

CVE-2024-26462

Kerberos 5 (aka krb5) 1.21.2 contains a memory leak vulnerability in /krb5/src/kdc/ndr.c.

MediumPUBLISHEDCNA: mitre
CNA base score5.5 CVSS v3.xCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

02 Description

Kerberos 5 (aka krb5) 1.21.2 contains a memory leak vulnerability in /krb5/src/kdc/ndr.c.

03 Exploitation and scoring

Exploitation
Public exploit code exists. CISA's assessment records a public proof of concept. That is not a report of exploitation in the wild.
SSVC decision
  • ExploitationpocPublic proof-of-concept exploit code exists. Not a report of exploitation in the wild.
  • AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
  • Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.
CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.
EPSS probability
0.43% probability of exploitation activity in the next 30 days.
EPSS percentile
Equal to or higher than the score of 37.4% of scored records. A rank, not a probability.
NVD base score
5.5 (CVSS v3.x), scored by the NVD independently of the CNA.
NVD CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
NVD analysis status
Modified. NVD last modified this record on 2026-06-17.
Red Hat severity
Moderate. Red Hat's rating for its own products, not a CVSS rating.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published
2024-02-26 00:00Z2 YR AGO
Last updated
2025-03-25 20:05Z1 YR AGO
Reserved
2024-02-19
Assigning CNA
mitre
Record state
PUBLISHED
Severity
Medium (CVSS 5.5)
CNA CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Weaknesses
  • CWE-401Missing Release of Memory after Effective LifetimeVariant
Data version
5.1
Document digest
fc48fa6e22297f604bba26740f62e76be64ca1e01d07fbf6aa0676e36e854abb

05 Affected products

VendorProductVersionsPlatforms
mitkerberos_5Not specified—
netappactive_iq_unified_managerNot specified—
netappcloud_volumes_ontap_mediatorNot specified—
netapph610cNot specified—
netapph610c_firmwareNot specified—
netapph610sNot specified—
netapph610s_firmwareNot specified—
netapph615cNot specified—
netapph615c_firmwareNot specified—
redhatenterprise_linuxNot specified—

06 References

07 Fixed in

AlmaLinux 9

  • krb5-devel
    Fixed in 1.21.1-3.el9
  • krb5-libs
    Fixed in 1.21.1-3.el9
  • krb5-pkinit
    Fixed in 1.21.1-3.el9
  • krb5-server
    Fixed in 1.21.1-3.el9
  • krb5-server-ldap
    Fixed in 1.21.1-3.el9
  • krb5-workstation
    Fixed in 1.21.1-3.el9
  • libkadm5
    Fixed in 1.21.1-3.el9

Source: AlmaLinux, AlmaLinux OS. Copyright (c) 2023 AlmaLinux OS. Licensed under MIT License. Received through OSV.dev. Reformatted by exploit.cc.

CloudLinux 9

  • krb5-devel
    Fixed in 1.21.1-3.el9
  • krb5-libs
    Fixed in 1.21.1-3.el9
  • krb5-pkinit
    Fixed in 1.21.1-3.el9
  • krb5-server
    Fixed in 1.21.1-3.el9
  • krb5-server-ldap
    Fixed in 1.21.1-3.el9
  • krb5-workstation
    Fixed in 1.21.1-3.el9
  • libkadm5
    Fixed in 1.21.1-3.el9

Derived from AlmaLinux 9. Partial coverage: only packages taken from AlmaLinux 9 are listed.

Source: CloudLinux errata, CloudLinux Inc. Derived from: AlmaLinux, AlmaLinux OS. Copyright (c) 2023 AlmaLinux OS. Licensed under MIT License. Received through OSV.dev. Reformatted by exploit.cc.

Debian 12

  • krb5
    Fixed in 1.20.1-2+deb12u3

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Debian 13

  • krb5
    Fixed in 1.21.3-1

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Debian 14

  • krb5
    Fixed in 1.21.3-1

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu 24.04 LTS

  • krb5
    Fixed in 1.20.1-6ubuntu2.5

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

A release or ecosystem missing from this list has no record here. It may be unaffected or not covered by the source. Source notices and licences.