CVE-2024-26462
Kerberos 5 (aka krb5) 1.21.2 contains a memory leak vulnerability in /krb5/src/kdc/ndr.c.
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.
- 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
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.