CVE-2025-13467: Insecure Deserialization (CVSS 5.5)

Description

A flaw was found in the Keycloak LDAP User Federation provider. This vulnerability allows an authenticated realm administrator to trigger deserialization of untrusted Java objects via a malicious LDAP server configuration.

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CVSS v3.1 Score

5.5

MEDIUM

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:L/I:L/A:N

Weakness Type (CWE)

CWE-502 Deserialization of Untrusted Data

References

Other References

https://access.redhat.com/errata/RHSA-2025:22088 https://access.redhat.com/errata/RHSA-2025:22089 https://access.redhat.com/errata/RHSA-2025:22090 https://access.redhat.com/errata/RHSA-2025:22091 https://access.redhat.com/security/cve/CVE-2025-13467 https://bugzilla.redhat.com/show_bug.cgi?id=2416038 https://github.com/keycloak/keycloak/commit/754c070cf8ca187dcc71f0f72ff3130ff2195328 https://github.com/keycloak/keycloak/issues/44478

Frequently Asked Questions

What is CVE-2025-13467? +

A flaw was found in the Keycloak LDAP User Federation provider. This vulnerability allows an authenticated realm administrator to trigger deserialization of untrusted Java objects via a malicious LDAP server configuration. It has a CVSS v3.1 base score of 5.5 (MEDIUM).

How severe is CVE-2025-13467? +

CVE-2025-13467 has a CVSS v3.1 score of 5.5 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance.

How do I check if I'm vulnerable to CVE-2025-13467? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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