High severity · published Jan 16, 2026
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
7.1
CVSS
0.5%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:N/I:L/A:H
Attack vector
Network
Complexity
High
Privileges
Low
User interaction
None
Confidentiality
None
Integrity
Low
Availability
High
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)0.5% · higher than 43% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
K5
Kerberos 5 · MIT
1.7 before 1.22 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-24528
CVE.org
https://www.cve.org/CVERecord?id=CVE-2025-24528
github.com
https://github.com/krb5/krb5/commit/78ceba024b64d49612375be4a12d1c066b0bfbd0
github.com
https://github.com/krb5/krb5/compare/krb5-1.21.3-final...krb5-1.22-final
lists.debian.org
https://lists.debian.org/debian-lts-announce/2025/02/msg00029.html
More from Kerberos 5
9.8
CVE-2017-15088
plugins/preauth/pkinit/pkinit_crypto_openssl.c in MIT Kerberos 5 (aka krb5) through 1.15.2 mishandles Distinguished Name (DN) fields, which allows remote attackers to execute…
9.8
CVE-2017-11462
Double free vulnerability in MIT Kerberos 5 (aka krb5) allows attackers to have unspecified impact via vectors involving automatic deletion of security contexts on error
9.8
CVE-2008-0062
KDC in MIT Kerberos 5 (krb5kdc) does not set a global variable for some krb4 message types, which allows remote attackers to cause a denial of service (crash) and possibly execute…
9.8
CVE-2005-1689
Double free vulnerability in the krb5_recvauth function in MIT Kerberos 5 (krb5) 1.4.1 and earlier allows remote attackers to execute arbitrary code via certain error conditions
9.8
CVE-2004-0772
Double free vulnerabilities in error handling code in krb524d for MIT Kerberos 5 (krb5) 1.2.8 and earlier may allow remote attackers to execute arbitrary code