PT-2026-66737 · Red Hat · Red Hat Directory Server 11+7

CVE-2026-15722 · Published 2026-07-31 · Updated 2026-07-31

Mitre

CVSS v3.1

7.5

High

Base vector

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

A stack buffer overflow flaw was found in 389 Directory Server (389-ds-base). The get ruvelement from berval() function in repl5 ruv.c copies digit characters from a network-supplied RUV berval into a fixed 16-byte stack buffer without bounds checking. A remote unauthenticated attacker can crash the LDAP server by sending a crafted StartNSDS50ReplicationRequest extended operation containing a replica ID field with more than 16 digit characters. The overflow occurs during payload decoding, before any authorization check. Stack protectors limit impact to denial of service.

Fix

Stack Overflow

Weakness Enumeration

CWE-121

Related Identifiers

CVE-2026-15722

Affected Products

Red Hat Directory Server 11

Red Hat Directory Server 12

Red Hat Directory Server 13

Red Hat Enterprise Linux 10

Red Hat Enterprise Linux 6

Red Hat Enterprise Linux 7

Red Hat Enterprise Linux 8

Red Hat Enterprise Linux 9

References · 3

• https://nvd.nist.gov/vuln/detail/CVE-2026-15722 · Security Note
• https://access.redhat.com/security/cve/CVE-2026-15722 · Note
• https://bugzilla.redhat.com/show_bug.cgi?id=2499961 · Note