CVE-2026-9064

HIGH EPSS 52.5%
Published May 20, 20261mo ago · Modified Jun 18, 20261w ago
7.5 CVSS 3.1
High
Find Similar
Published May 20, 2026 1mo ago
Last Modified Jun 18, 2026 1w ago

Description

A flaw was found in 389-ds-base. The get_ldapmessage_controls_ext() function in the LDAP server does not enforce an upper bound on the number of controls per LDAP message. A remote, unauthenticated attacker can send a specially crafted LDAP request containing hundreds of thousands of minimal controls within the default maximum BER message size (2 MB), causing excessive CPU consumption and heap allocation on the server. Under concurrent exploitation, this leads to significant latency degradation, worker thread starvation, or out-of-memory termination, resulting in a denial of service.

CVSS Details

Base Score
7.5
Exploitability
3.9
Impact
3.6
Vector string
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality None
Integrity None
Availability High

Threat Intelligence

EPSS Exploit Probability
52.5% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available

Weaknesses 1

CWE-770

Affected Products 9

VendorProductVersionRange
redhatdirectory_server11.0any
redhatdirectory_server12.0any
redhatdirectory_server13.0any
redhat389_directory_server*any
redhatenterprise_linux6.0any
redhatenterprise_linux7.0any
redhatenterprise_linux8.0any
redhatenterprise_linux9.0any
redhatenterprise_linux10.0any

References 19

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.