CVE-2026-11790
Medium
Description
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.
SeverityMedium
CVSS4.9
Exploit probability22. percentile0.3%
Product
Redhat Directory Server
PublishedJun 9, 2026
First seenJun 9, 2026
Weakness typeCWE-400Uncontrolled resource consumption
How to fix
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| redhat directory_server | 11.0, 12.0, 13.0 | — |
| redhat 389_directory_server | 1.3.6.0 | — |
| redhat enterprise_linux | 7.0, 8.0, 9.0, 10.0 | — |
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