CVE-2026-11788

Name: CVE-2026-11788
Creator: NVD / NIST
Published: 2026-06-09T14:16:36.94+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 0.42%

Last modified Jun 17, 2026

CVE-2026-11788 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. A flaw was found in 389 Directory Server. The dereference control plugin does not check for allocation failure before using a BER structure, allowing an unauthenticated remote attacker to crash the LDAP server when the system is under memory pressure.. EPSS estimates a 0.42% chance of exploitation in the next 30 days.

Description

A flaw was found in 389 Directory Server. The dereference control plugin does not check for allocation failure before using a BER structure, allowing an unauthenticated remote attacker to crash the LDAP server when the system is under memory pressure.

Metrics

CVSS 3.1

7.5/10

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

EPSS Probability

0.42%

33.7th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-476

Affected Software

Vendor	Product	Versions
Redhat	Directory Server	11.0
Redhat	Directory Server	12.0
Redhat	Directory Server	13.0
Redhat	389 Directory Server	All versions
Redhat	Enterprise Linux	7.0
Redhat	Enterprise Linux	8.0
Redhat	Enterprise Linux	9.0
Redhat	Enterprise Linux	10.0

References

https://access.redhat.com/security/cve/CVE-2026-11788Vendor Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2485423Issue Tracking, Vendor Advisory
https://redhat.atlassian.net/browse/PSIRTSUPT-7600Permissions Required

Timeline

Published: Jun 9, 2026
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2026-11788?

How severe is CVE-2026-11788?

CVE-2026-11788 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 0.42% probability of exploitation in the next 30 days.

How do I fix CVE-2026-11788?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2026-11788?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST