Vulnerability · Published Jan 16, 2026 · Assigned by mitre
CVE-2025-24528
High 7.1
In plain English
A high-severity integer overflow in Kerberos 5 from MIT. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 43% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS 3.1)7.1High
Exploit odds (30 days)0.5%top 56.5% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official 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 out-of-bounds write and kadmind daemon crash.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| AlmaLinux:8 | krb5-devel | 1.18.2-31.el8_10 | ALSA-2025:2722 |
| AlmaLinux:9 | krb5-devel | 1.21.1-6.el9 | ALSA-2025:7067 |
| AlmaLinux:8 | krb5-libs | 1.18.2-31.el8_10 | ALSA-2025:2722 |
| AlmaLinux:9 | krb5-libs | 1.21.1-6.el9 | ALSA-2025:7067 |
| AlmaLinux:8 | krb5-pkinit | 1.18.2-31.el8_10 | ALSA-2025:2722 |
| AlmaLinux:9 | krb5-pkinit | 1.21.1-6.el9 | ALSA-2025:7067 |
| AlmaLinux:8 | krb5-server | 1.18.2-31.el8_10 | ALSA-2025:2722 |
| AlmaLinux:9 | krb5-server | 1.21.1-6.el9 | ALSA-2025:7067 |
| AlmaLinux:8 | krb5-server-ldap | 1.18.2-31.el8_10 | ALSA-2025:2722 |
| AlmaLinux:9 | krb5-server-ldap | 1.21.1-6.el9 | ALSA-2025:7067 |
| AlmaLinux:8 | krb5-workstation | 1.18.2-31.el8_10 | ALSA-2025:2722 |
| AlmaLinux:9 | krb5-workstation | 1.21.1-6.el9 | ALSA-2025:7067 |
| AlmaLinux:8 | libkadm5 | 1.18.2-31.el8_10 | ALSA-2025:2722 |
| AlmaLinux:9 | libkadm5 | 1.21.1-6.el9 | ALSA-2025:7067 |
| Debian:12 | krb5 | 1.20.1-2+deb12u3 | DEBIAN-CVE-2025-24528 |
| Debian:13 | krb5 | 1.21.3-5 | DEBIAN-CVE-2025-24528 |
| Debian:14 | krb5 | 1.21.3-5 | DEBIAN-CVE-2025-24528 |
| Rocky Linux:8 | krb5 | 0:1.18.2-31.el8_10 | RLSA-2025:2722 |
| Rocky Linux:9 | krb5 | 0:1.21.1-6.el9 | RLSA-2025:7067 |
| Ubuntu:22.04:LTS | krb5 | 1.19.2-2ubuntu0.6 | USN-7314-1 |
| Ubuntu:22.04:LTS | krb5 | 1.19.2-2ubuntu0.6 | UBUNTU-CVE-2025-24528 |
| Ubuntu:24.04:LTS | krb5 | 1.20.1-6ubuntu2.5 | USN-7314-1 |
| Ubuntu:24.04:LTS | krb5 | 1.20.1-6ubuntu2.5 | UBUNTU-CVE-2025-24528 |
| Ubuntu:25.10 | krb5 | 1.21.3-4ubuntu2 | UBUNTU-CVE-2025-24528 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| MIT | Kerberos 5 | 1.7 – before 1.22 |
Weakness: CWE-190 · Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:N/I:L/A:H