CVE-2026-15041
389-ds-base: 389-ds-base: non-constant-time comparison in pbkdf2-sha256 password verification
CVSS Score
3.7
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-208 |
| Vendor | red hat |
| Product | red hat directory server 11 |
| Published | Jul 8, 2026 |
| Last Updated | Jul 8, 2026 |
Stay Ahead of the Next One
Get instant alerts for red hat red hat directory server 11
Be the first to know when new low vulnerabilities affecting red hat red hat directory server 11 are published — delivered to Slack, Telegram or Discord.
Get Free Alerts →
Free · No credit card · 60 sec setup
CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
None
Availability
None
Affected Versions
Red Hat / Red Hat Directory Server 11
All versions affected Red Hat / Red Hat Directory Server 12
All versions affected Red Hat / Red Hat Directory Server 13
All versions affected Red Hat / Red Hat Enterprise Linux 10
All versions affected Red Hat / Red Hat Enterprise Linux 6
All versions affected Red Hat / Red Hat Enterprise Linux 7
All versions affected Red Hat / Red Hat Enterprise Linux 8
All versions affected Red Hat / Red Hat Enterprise Linux 9
All versions affected References
Credits
Red Hat would like to thank Andrew Rukin (Arenadata) for reporting this issue.