CVE-2021-38121
Weak communication protocol identified in Advance Authentication client application
CVE-2021-38121 is a high vulnerability (CVSS 8.3) in Opentext Netiq Advance Authentication, published August 28, 2024. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.18%, the 7th percentile. No source names a fixed version.
Insufficient or weak TLS protocol version identified in Advance authentication client server communication when specific service is accessed between devices. This issue affects NetIQ Advance Authentication versions before 6.3.5.1
Attack profile
How easy it is to exploit
- Attack vector
- Adjacent network
- Complexity
- Low
- Privileges needed
- Low
- User interaction
- Required
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- Low
Exploit likelihood
What each source reports
CVE List Score used
Weak communication protocol identified in Advance Authentication client application
Insufficient or weak TLS protocol version identified in Advance authentication client server communication when specific service is accessed between devices. This issue affects NetIQ Advance Authentication versions before 6.3.5.1
- Record
CVE-2021-38121- CVSS 3.1
- 8.3 High
CVSS:3.1/AV:A/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:L - Weakness
- CWE-326
- Updated
- 2026-11-02
EUVDEUVD-2021-24594
Insufficient or weak TLS protocol version identified in Advance authentication client server communication when specific service is accessed between devices. This issue affects NetIQ Advance Authentication versions before 6.3.5.1
- Record
EUVD-2021-24594- CVSS 3.1
- 8.3 High
CVSS:3.1/AV:A/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:L - Updated
- 2026-11-03
GitHub AdvisoriesGHSA-x9wr-745j-rm5j
Insufficient or weak TLS protocol version identified in Advance authentication client server...
Insufficient or weak TLS protocol version identified in Advance authentication client server communication when specific service is accessed between devices. This issue affects NetIQ Advance Authentication versions before 6.3.5.1
- Record
GHSA-x9wr-745j-rm5j- CVSS 3.1
- 8.3 High
CVSS:3.1/AV:A/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:L - Weakness
- CWE-326
- Updated
- 2026-11-02
NVD
Insufficient or weak TLS protocol version identified in Advance authentication client server communication when specific service is accessed between devices. This issue affects NetIQ Advance Authentication versions before 6.3.5.1
- Record
CVE-2021-38121- CVSS 3.1
- 8.3 High
CVSS:3.1/AV:A/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:L - CVSS 3.1
- 8.8 High
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-326
- Updated
- 2026-11-02
Affected products
History
| When | Changed | Sources |
|---|---|---|
| 2026-11-03 | aliases, published | EUVD |
| 2026-11-02 | created | CVE List, GitHub Advisories, NVD |