VulnerabilityAwaiting Analysis

CVE-2026-16560

A heap-buffer-overflow flaw was found in Directory Server (389-ds-base).

MEDIUM 5.3EPSS 0.40%

Does this matter?

Lower severity and a low EPSS score (0.40%). Track it; it rarely justifies an emergency change on its own.

Description

A heap-buffer-overflow flaw was found in Directory Server (389-ds-base). When a DN contains a legacy-quoted value, the server won't close the heap allocation allowing another call to refer to the same memory pointer causing a denial of service or an arbitrary memory write operation.

CVSS 3.1: 5.3 MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
EPSS: 0.40% probability · 33th percentile
CISA KEV: Not listed
Weakness: CWE-1220
Source: secalert@redhat.com

References

https://access.redhat.com/security/cve/CVE-2026-16560
https://bugzilla.redhat.com/show_bug.cgi?id=2506102

Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.