CVE-2019-4551
IBM Security Directory Server 6.4.0 does not perform an authentication check for a critical...
IBM Security Directory Server 6.4.0 does not perform an authentication check for a critical resource or functionality allowing anonymous users access to protected areas. IBM X-Force ID: 165953.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- 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
IBM Security Directory Server 6.4.0 does not perform an authentication check for a critical resource or functionality allowing anonymous users access to protected areas. IBM X-Force ID: 165953.
- Record
CVE-2019-4551- CVSS 3.0
- 5.3 Medium
CVSS:3.0/C:L/UI:N/PR:N/S:U/AV:N/AC:L/A:N/I:N/E:U/RC:C/RL:O - Updated
- 2026-11-02
EUVDEUVD-2019-14158
IBM Security Directory Server 6.4.0 does not perform an authentication check for a critical resource or functionality allowing anonymous users access to protected areas. IBM X-Force ID: 165953.
- Record
EUVD-2019-14158- CVSS 3.0
- 5.3 Medium
CVSS:3.0/C:L/UI:N/PR:N/S:U/AV:N/AC:L/A:N/I:N/E:U/RC:C/RL:O - Updated
- 2026-11-03
GitHub AdvisoriesGHSA-53p8-7gjh-p43g No score
IBM Security Directory Server 6.4.0 does not perform an authentication check for a critical...
IBM Security Directory Server 6.4.0 does not perform an authentication check for a critical resource or functionality allowing anonymous users access to protected areas. IBM X-Force ID: 165953.
- Record
GHSA-53p8-7gjh-p43g- Updated
- 2026-11-02
NVD
IBM Security Directory Server 6.4.0 does not perform an authentication check for a critical resource or functionality allowing anonymous users access to protected areas. IBM X-Force ID: 165953.
- Record
CVE-2019-4551- CVSS 3.1
- 5.3 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N - CVSS 3.0
- 5.3 Medium
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N - CVSS 2.0
- 5.0 Medium
AV:N/AC:L/Au:N/C:P/I:N/A:N - Weakness
- CWE-306
- Updated
- 2026-11-02
Affected products
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases, published | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2019-4551 is a medium vulnerability (CVSS 5.3) in Ibm Security Directory Server, published February 4, 2020. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.28%, the 70th percentile. No source names a fixed version.