Vulnerability Report

CVE-2026-11790

Title: 389 Directory Server: PBKDF2-SHA256 iteration count bypass leads to DoS

DoS

Proof Of Concept

No public PoC currently indexed for CVE-2026-11790.

CWE Category CWE-400

Published Date Jun 09, 2026

Modified Date Jul 23, 2026

Exploit Status Not Found

Score 4.9 CVSS v3.1

Exploit Probability (EPSS)

0.29%

Vulnerability Summary

CVE-2026-11790: A flaw was found in 389 Directory Server. The PBKDF2-SHA256 password storage plugin does not enforce an upper bound on the iteration count extracted from stored password hashes. A privileged attacker who can modify a user's password hash can cause excessive CPU consumption during authentication, resulting in denial of service.

Impacted Vendors

redhat 1

fedora 1

Reference Links

https://access.redhat.com/security/cve/CVE-2026-11790 https://bugzilla.redhat.com/show_bug.cgi?id=2485421 https://redhat.atlassian.net/browse/PSIRTSUPT-7600

CVSS v3.1

Source Entity [email protected]

Severity MEDIUM

4.9

Attack Vector

NETWORK

Complexity

LOW

Privileges

N/A

Interaction

NONE

Confidentiality

N/A

Integrity

N/A

Availability

N/A

Scope

UNCHANGED

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

Associated Attack Patterns (CAPEC)

Total: Patterns

CVE-2026-11790 Exploits & PoCs (Proof Of Concept)

No public PoCs found in our database for this CVE.

July 23, 2026 MODIFIED

Vulnerability data updated via NVD.

June 30, 2026 MODIFIED

Vulnerability data updated via NVD.

June 12, 2026 MODIFIED

Vulnerability data updated via NVD.

June 09, 2026 MODIFIED

Vulnerability data updated via NVD.

Attack Vector Matrix

Access Vector NETWORK

Complexity LOW

Privileges N/A

Interaction NONE

CVSS Vector String


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

Affected Stack

No specific products linked.