CVE-2026-11787

🔶 medium

Summary

A flaw was found in 389 Directory Server. The ldap_utf8prev() function reads bytes before the start of a buffer without bounds checking, causing a heap buffer over-read in string filter parsing that may influence internal filter processing behavior.

CVSS Score

5.0

Medium

EPSS Score

0.2

Exploit Probability

Published Date

2026-06-09

First Seen: 2026-06-10

📊 Relative Risk Intelligence

This CVE is Lower Risk - more severe than 19.3% of all 328,009 vulnerabilities in our database.

#264,733

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:L/UI:N/S:U/C:L/I:L/A:L

CWE IDs (Weakness Types)

CWE-126

📦 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-2026-11787

Vendor Advisory

https://bugzilla.redhat.com/show_bug.cgi?id=2485425

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-2026-11788	🔶 medium	5.9	0.4	A flaw was found in 389 Directory Server. The dereference control plugin does not check for allocation failure before us...	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