CVE Tools
Home/Vulnerability/CVE-2026-11788

CVE-2026-11788

389-ds-base: 389-ds-base: null pointer dereference in deref control plugin ber parser

Published: Jun 9, 2026Updated: Jun 9, 2026 Sources: CVE List NVD
NVD MITRE
5.9CVSS
MEDIUM

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 Score
N/A
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Workaround Only

CVSS Vector Breakdown

AV:NAC:HPR:NUI:NS:UC:NI:NA:H
Exploitability
AV:NAttack Vector
Network
AC:HAttack Complexity
High
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:NConfidentiality
None
I:NIntegrity
None
A:HAvailability
High

Weaknesses

CWE-476

Affected Products

Red Hat Directory Server 11
Red Hat
Red Hat Directory Server 12
Red Hat
Red Hat Directory Server 13
Red Hat
Red Hat Enterprise Linux 10
Red Hat
Red Hat Enterprise Linux 6
Red Hat
and 3 more affected products View all →

Attack Graph

Products CVE Techniques Tactics

Click technique nodes to view MITRE ATT&CK details. Scroll to zoom, drag to pan.

Exploitability

Workaround Available

MITRE ATT&CK

2 techniques
Impact
Initial Access
View detailed technique mapping

References

https://access.redhat.com/security/cve/CVE-2026-11788
access.redhat.com
https://bugzilla.redhat.com/show_bug.cgi?id=2485423
bugzilla.redhat.com
https://redhat.atlassian.net/browse/PSIRTSUPT-7600
redhat.atlassian.net

Timeline

Published
Jun 9, 2026
Last Updated
Jun 9, 2026

Unlock Complete Vulnerability Intelligence

Get the full picture for CVE-2026-11788 and every CVE in our database. Create a free account — no credit card required.

Create Free Account
AI-powered analysis
Plain-language impact assessment and exploitation scenario
Attack graph visualization
Interactive attack path and kill chain mapping
Exploit details & PoC links
ExploitDB, Metasploit, GitHub PoCs with direct links
Nuclei scanner templates
Ready-to-use vulnerability scanner templates
Full remediation guide
Patch instructions, workarounds, and compliance impact
Interactive AI chat
Ask questions about this vulnerability in natural language
Related vulnerabilities
Semantically similar CVEs and attack patterns
REST API & MCP access
Integrate vulnerability data into your workflows