Vulnerability Report

CVE-2026-15041

Title: Timing Attack in 389 Directory Server PBKDF2-SHA256 password verification

Timing Attack

Proof Of Concept

No public PoC currently indexed for CVE-2026-15041.

CWE Category CWE-208

Published Date Jul 08, 2026

Modified Date Jul 09, 2026

Exploit Status Not Found

Score 3.7 CVSS v3.1

Exploit Probability (EPSS)

0.36%

Vulnerability Summary

CVE-2026-15041: A flaw was found in 389 Directory Server. The PBKDF2-SHA256 password verification function uses standard memcmp() for comparing password hashes instead of a constant-time comparison function. A remote attacker could potentially use timing measurements of LDAP bind attempts to infer partial hash information, though practical exploitation is extremely difficult due to PBKDF2 computational overhead.

Impacted Vendors

fedora 1

redhat 1

Reference Links

https://access.redhat.com/security/cve/CVE-2026-15041 https://bugzilla.redhat.com/show_bug.cgi?id=2498022

CVSS v3.1

Source Entity [email protected]

Severity LOW

3.7

Attack Vector

NETWORK

Complexity

HIGH

Privileges

N/A

Interaction

NONE

Confidentiality

N/A

Integrity

N/A

Availability

N/A

Scope

UNCHANGED

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

Associated Attack Patterns (CAPEC)

Total: Patterns