CVE-2026-11788

🔶 medium

Summary

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.

CVSS Score

5.9

Medium

EPSS Score

0.4

Exploit Probability

Published Date

2026-06-09

First Seen: 2026-06-10

📊 Relative Risk Intelligence

This CVE is Lower Risk - more severe than 33.4% of all 328,009 vulnerabilities in our database.

#218,561

Below average severity

Severity Percentile

🎯 CISA SSVC Assessment Updated: Jun 9, 2026

🔍 Exploitation Status

None

No known exploits

⚙️ Automatable

Requires human interaction

💥 Technical Impact

Partial

Limited system impact

SSVC data provided by CISA

Last Modified 2026-06-12

Source NVD 🔗

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

CWE IDs (Weakness Types)

CWE-476

📦 Affected Products 8

Vendor	Product	Status	Affected Versions
redhat	directory_server	Affected	v11.0
redhat	directory_server	Affected	v12.0
redhat	directory_server	Affected	v13.0
redhat	enterprise_linux	Affected	v10.0
redhat	enterprise_linux	Affected	v7.0
redhat	enterprise_linux	Affected	v8.0
redhat	enterprise_linux	Affected	v9.0
redhat	389_directory_server	Affected	v-

🔗 References 3

https://access.redhat.com/security/cve/CVE-2026-11788

Vendor Advisory

https://bugzilla.redhat.com/show_bug.cgi?id=2485423

Issue Tracking Vendor Advisory

https://redhat.atlassian.net/browse/PSIRTSUPT-7600

Permissions Required

🔗 Related CVEs 6

CVE ID	Severity	CVSS	EPSS	Summary	Published
CVE-2026-1766	🔶 medium	5.6	0.2	A flaw was found in GNOME localsearch (previously known as tracker-miners) MP3 Extractor, specifically within the tracke...	2026-06-16
CVE-2026-1767	🔶 medium	5.6	0.2	A flaw was found in the GNOME localsearch (previously known as tracker-miners) MP3 Extractor `tracker-extract-mp3` compo...	2026-06-16
CVE-2026-11785	🔶 medium	4.3	0.2	A flaw was found in 389 Directory Server. A type confusion in the SSO token extended operation handler causes partial st...	2026-06-09
CVE-2026-11786	ℹ️ low	1.9	0.2	A flaw was found in 389 Directory Server. The LDIF parser reads past the end of a heap buffer when processing attribute ...	2026-06-09
CVE-2026-11787	🔶 medium	5.0	0.2	A flaw was found in 389 Directory Server. The ldap_utf8prev() function reads bytes before the start of a buffer without ...	2026-06-09
CVE-2026-11789	🔶 medium	4.9	0.3	A flaw was found in 389 Directory Server. The SMD5 password storage plugin performs unsigned integer underflow when comp...	2026-06-09

These CVEs affect the same products