CVE-2026-15041
389-ds-base: 389-ds-base: non-constant-time comparison in pbkdf2-sha256 password verification
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.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- High
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- Low
- Integrity
- None
- Availability
- None
Exploit likelihood
What each source reports
CVE List Score used
389-ds-base: 389-ds-base: non-constant-time comparison in pbkdf2-sha256 password verification
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.
- Record
CVE-2026-15041- CVSS 3.1
- 3.7 Low
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N - Weakness
- CWE-208
- Updated
- 2026-11-06
EUVDEUVD-2026-42213
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.
- Record
EUVD-2026-42213- CVSS 3.1
- 3.7 Low
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N - Updated
- 2026-11-06
GitHub AdvisoriesGHSA-j5fh-pqqw-m384
A flaw was found in 389 Directory Server. The PBKDF2-SHA256 password verification function uses...
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.
- Record
GHSA-j5fh-pqqw-m384- CVSS 3.1
- 3.7 Low
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N - Weakness
- CWE-208
- Updated
- 2026-11-02
NVD
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.
- Record
CVE-2026-15041- CVSS 3.1
- 3.7 Low
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N - Weakness
- CWE-208
- Updated
- 2026-11-06
OSVDEBIAN-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.
- Record
DEBIAN-CVE-2026-15041- CVSS 3.1
- 3.7 Low
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N - Updated
- 2026-11-07
OSVUBUNTU-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.
- Record
UBUNTU-CVE-2026-15041- CVSS 3.1
- 3.7 Low
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N - Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
389-ds-baseDebian:12 |
All versions, plus listed versions 2.3.1+dfsg1-12.3.1+dfsg1-1+deb12u12.3.4+dfsg1-12.3.4+dfsg1-1.12.4.4+dfsg1-1 Show 13 moreShow less2.4.4+dfsg1-32.4.5+dfsg1-13.0.2+dfsg1-13.1.1+dfsg1-13.1.1+dfsg1-23.1.1+dfsg1-33.1.2+dfsg1-13.1.2+vendor1-13.1.2+vendor1-23.3.0-13.3.0-23.3.1-13.3.1-3 |
None known |
389-ds-baseDebian:13 |
All versions, plus listed versions 3.1.2+dfsg1-13.1.2+dfsg1-1+deb13u13.1.2+vendor1-13.1.2+vendor1-23.3.0-13.3.0-23.3.1-13.3.1-3 |
None known |
389-ds-baseUbuntu:Pro:16.04:LTS |
All versions, plus listed versions 1.3.3.12-1build11.3.3.13-11.3.4.5-21.3.4.8-11.3.4.8-3 Show 4 moreShow less1.3.4.8-3ubuntu11.3.4.8-41.3.4.9-11.3.4.9-1ubuntu0.1~esm1 |
None known |
389-ds-baseUbuntu:Pro:18.04:LTS |
All versions, plus listed versions 1.3.7.5-11.3.7.5-1build11.3.7.5-1build21.3.7.9-11.3.7.10-11.3.7.10-1ubuntu11.3.7.10-1ubuntu1+esm1 |
None known |
389-ds-baseUbuntu:Pro:20.04:LTS |
All versions, plus listed versions 1.4.1.6-41.4.1.6-4build11.4.2.4-11.4.2.4-1build11.4.3.2-11.4.3.2-1build11.4.3.6-21.4.3.6-2ubuntu0.1~esm1 |
None known |
389-ds-baseUbuntu:22.04:LTS |
All versions, plus listed versions 1.4.4.11-2build11.4.4.11-2build21.4.4.17-12.0.11-22.0.14-12.0.15-12.0.15-1ubuntu2 |
None known |
389-ds-baseUbuntu:24.04:LTS |
All versions, plus listed versions 2.3.4+dfsg1-12.4.4+dfsg1-1ubuntu12.4.4+dfsg1-1ubuntu42.4.4+dfsg1-32.4.5+dfsg1-1 |
None known |
389-ds-baseUbuntu:25.10 |
All versions, plus listed versions 3.1.2+dfsg1-1 |
None known |
389-ds-baseUbuntu:26.10 |
All versions, plus listed versions 3.1.2+vendor1-23.1.2+vendor1-2build13.3.1-3 |
None known |
389-ds-baseUbuntu:26.04:LTS |
All versions, plus listed versions 3.1.2+dfsg1-13.1.2+vendor1-2 |
None known |
History
| Recorded | Changed | Sources |
|---|---|---|
| facts | CVE List | |
| first indexed | CVE List, EUVD, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2026-15041 is a low vulnerability (CVSS 3.7) in Redhat 389 Directory Server, published July 8, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.36%, the 29th percentile. No source names a fixed version.