CVE-2025-24528
In MIT Kerberos 5 (aka krb5) before 1.22 (with incremental propagation), there is an integer overflow for a large update size to resize() in kdb_log.c. An authenticated attacker can cause an
02 Description
In MIT Kerberos 5 (aka krb5) before 1.22 (with incremental propagation), there is an integer overflow for a large update size to resize() in kdb_log.c. An authenticated attacker can cause an
03 Exploitation and scoring
- Exploitation
- Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.
- SSVC decision
- ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
- AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
- Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.
- EPSS probability
- 0.50% probability of exploitation activity in the next 30 days.
- EPSS percentile
- Equal to or higher than the score of 42.9% of scored records. A rank, not a probability.
- NVD base score
- 7.1 (CVSS v3.x), scored by the NVD independently of the CNA.
- NVD CVSS vector
- CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:N/I:L/A:H
- NVD analysis status
- Deferred. 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
- 2026-01-16 00:00Z9 MO AGO
- Last updated
- 2026-01-16 18:06Z9 MO AGO
- Reserved
- 2025-01-23
- Assigning CNA
- mitre
- Record state
- PUBLISHED
- Severity
- High (CVSS 7.1)
- CNA CVSS vector
- CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:N/I:L/A:H
- Weaknesses
- Data version
- 5.2
- Document digest
- 974d4dd5fffc3dea206832b737dede98ae1e59944fba3a4b9a846a71b22e0627
05 Affected products
06 References
07 Fixed in
AlmaLinux 8
- krb5-devel Fixed in 1.18.2-31.el8_10
- krb5-libs Fixed in 1.18.2-31.el8_10
- krb5-pkinit Fixed in 1.18.2-31.el8_10
- krb5-server Fixed in 1.18.2-31.el8_10
- krb5-server-ldap Fixed in 1.18.2-31.el8_10
- krb5-workstation Fixed in 1.18.2-31.el8_10
- libkadm5 Fixed in 1.18.2-31.el8_10
Source: AlmaLinux, AlmaLinux OS. Copyright (c) 2023 AlmaLinux OS. Licensed under MIT License. Received through OSV.dev. Reformatted by exploit.cc.
AlmaLinux 9
- krb5-devel Fixed in 1.21.1-6.el9
- krb5-libs Fixed in 1.21.1-6.el9
- krb5-pkinit Fixed in 1.21.1-6.el9
- krb5-server Fixed in 1.21.1-6.el9
- krb5-server-ldap Fixed in 1.21.1-6.el9
- krb5-workstation Fixed in 1.21.1-6.el9
- libkadm5 Fixed in 1.21.1-6.el9
Source: AlmaLinux, AlmaLinux OS. Copyright (c) 2023 AlmaLinux OS. Licensed under MIT License. Received through OSV.dev. Reformatted by exploit.cc.
CloudLinux 8
- krb5-devel Fixed in 1.18.2-31.el8_10
- krb5-libs Fixed in 1.18.2-31.el8_10
- krb5-pkinit Fixed in 1.18.2-31.el8_10
- krb5-server Fixed in 1.18.2-31.el8_10
- krb5-server-ldap Fixed in 1.18.2-31.el8_10
- krb5-workstation Fixed in 1.18.2-31.el8_10
- libkadm5 Fixed in 1.18.2-31.el8_10
Derived from AlmaLinux 8. Partial coverage: only packages taken from AlmaLinux 8 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.
CloudLinux 9
- krb5-devel Fixed in 1.21.1-6.el9
- krb5-libs Fixed in 1.21.1-6.el9
- krb5-pkinit Fixed in 1.21.1-6.el9
- krb5-server Fixed in 1.21.1-6.el9
- krb5-server-ldap Fixed in 1.21.1-6.el9
- krb5-workstation Fixed in 1.21.1-6.el9
- libkadm5 Fixed in 1.21.1-6.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 1.21.3-5
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 14
- krb5 Fixed in 1.21.3-5
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 20.04 LTS
- krb5 Fixed in 1.17-6ubuntu4.9
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 22.04 LTS
- krb5 Fixed in 1.19.2-2ubuntu0.6
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. 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.
Ubuntu 25.10
- krb5 Fixed in 1.21.3-4ubuntu2
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu Pro 14.04 LTS
- krb5 No fix yet
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu Pro 16.04 LTS
- krb5 No fix yet
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu Pro 18.04 LTS
- krb5 No fix yet
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.