What’s Vulnerable › Vulnerabilities

CVE-2025-2487: 389-ds-base: null pointer dereference leads to denial of service

• Severity: medium (CVSS 4.9 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.6% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2025-03-18 · updated 2026-06-30
• Weakness: CWE-476

Description

A flaw was found in the 389-ds-base LDAP Server. This issue occurs when issuing a Modify DN LDAP operation through the ldap protocol, when the function return value is not tested and a NULL pointer is dereferenced. If a privileged user performs a ldap MODDN operation after a failed operation, it could lead to a Denial of Service (DoS) or system crash.

Affected products

• Red Hat Directory Server 12.4 EUS for RHEL 9: all versions — fixed in 9040020250325181857.1674d574
• Red Hat Enterprise Linux 9: all versions — fixed in 0:2.5.2-9.el9_5, 0:2.6.1-8.el9_6
• Red Hat Enterprise Linux 9.4 Extended Update Support: all versions — fixed in 0:2.4.5-14.el9_4

How to fix

Upgrade to a fixed version: Red Hat Directory Server 12.4 EUS for RHEL 9 9040020250325181857.1674d574; Red Hat Enterprise Linux 9 0:2.5.2-9.el9_5, 0:2.6.1-8.el9_6; Red Hat Enterprise Linux 9.4 Extended Update Support 0:2.4.5-14.el9_4. Check the vendor advisory for mitigations.

References

• https://access.redhat.com/errata/RHSA-2025:3663
• https://access.redhat.com/errata/RHSA-2025:3670
• https://access.redhat.com/errata/RHSA-2025:4491
• https://access.redhat.com/errata/RHSA-2025:7395
• https://access.redhat.com/security/cve/CVE-2025-2487
• https://bugzilla.redhat.com/show_bug.cgi?id=2353071
• https://github.com/389ds/389-ds-base/security/advisories/GHSA-426r-w669-66gw

Get alerted when CVE-2025-2487 or the next vulnerability affects your stack