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Description

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.

PUBLISHED Reserved 2026-07-08 | Published 2026-07-08 | Updated 2026-07-08 | Assigner redhat




LOW: 3.7CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N

Problem types

Observable Timing Discrepancy

Product status

Default status
affected

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affected

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affected

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affected

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unaffected

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affected

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affected

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affected

Timeline

2026-07-08:Reported to Red Hat.
2026-07-08:Made public.

Credits

Red Hat would like to thank Andrew Rukin (Arenadata) for reporting this issue.

References

access.redhat.com/security/cve/CVE-2026-15041 vdb-entry

bugzilla.redhat.com/show_bug.cgi?id=2498022 (RHBZ#2498022) issue-tracking

cve.org (CVE-2026-15041)

nvd.nist.gov (CVE-2026-15041)

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