CVE-2021-22530 [High] | Security Vulnerability in Netiq Advanced Authentication

A vulnerability identified in NetIQ Advance Authentication that doesn't enforce account lockout when brute force attack is performed on API based login. This issue may lead to user account compromise if successful or may impact server performance. This issue impacts all NetIQ Advance Authentication before 6.3.5.1

#	Date	Old EPSS score	New EPSS score	Delta (New - Old)
1	2026-06-15	0.07%	0.21%	+0.15%
2	2025-11-21	0.16%	0.07%	-0.09%
3	2025-11-18	—	0.16%	—

Date

Old EPSS score

New EPSS score

Delta (New - Old)

2026-06-15

0.07%

0.21%

+0.15%

2025-11-21

0.16%

0.07%

-0.09%

2025-11-18

—

0.16%

—

Base score	Version	Severity	Vector	Exploitability	Impact	Score source
8.2	3.1	HIGH	`CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:L/A:L` Click to expand Attack vector (AV:N) Could be attacked over the internet or any normal routed network—not just someone sitting at the machine. Attack complexity (AC:L) Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup. Privileges required (PR:L) A normal user session is enough; they don’t have to be admin. User interaction (UI:R) A real person has to do something—click, install, enable—otherwise it doesn’t land. Scope (S:C) Breaking this can reach past the original component and bite other resources—bigger blast radius. Confidentiality (C:H) Serious risk that confidential data gets exposed in a big way. Integrity (I:L) Attackers could change some data, but it’s limited—not everything goes. Availability (A:L) Might cause slowdowns, glitches, or partial disruption—not a full brick.	2.3	5.3	[email protected]
9.9	3.1	CRITICAL	`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:L/A:L` Click to expand Attack vector (AV:N) Could be attacked over the internet or any normal routed network—not just someone sitting at the machine. Attack complexity (AC:L) Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup. Privileges required (PR:N) No account or special rights needed—anonymous or random user is enough. User interaction (UI:N) Nobody has to click “OK” or open a trap file; it can work without a victim helping. Scope (S:C) Breaking this can reach past the original component and bite other resources—bigger blast radius. Confidentiality (C:H) Serious risk that confidential data gets exposed in a big way. Integrity (I:L) Attackers could change some data, but it’s limited—not everything goes. Availability (A:L) Might cause slowdowns, glitches, or partial disruption—not a full brick.	3.9	5.3	[email protected]

Base score

Version

Severity

Vector

Exploitability

Impact

Score source

8.2

3.1

HIGH

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:L/A:L Click to expand

Attack vector (AV:N): Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L): Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:L): A normal user session is enough; they don’t have to be admin.
User interaction (UI:R): A real person has to do something—click, install, enable—otherwise it doesn’t land.
Scope (S:C): Breaking this can reach past the original component and bite other resources—bigger blast radius.
Confidentiality (C:H): Serious risk that confidential data gets exposed in a big way.
Integrity (I:L): Attackers could change some data, but it’s limited—not everything goes.
Availability (A:L): Might cause slowdowns, glitches, or partial disruption—not a full brick.

2.3

5.3

[email protected]

9.9

3.1

CRITICAL

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:L/A:L Click to expand

Attack vector (AV:N): Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L): Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N): No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N): Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:C): Breaking this can reach past the original component and bite other resources—bigger blast radius.
Confidentiality (C:H): Serious risk that confidential data gets exposed in a big way.
Integrity (I:L): Attackers could change some data, but it’s limited—not everything goes.
Availability (A:L): Might cause slowdowns, glitches, or partial disruption—not a full brick.

3.9

5.3

[email protected]

Affected software / configurations for CVE-2021-22530

Vendor	Product	Version	Raw CPE
microfocus	netiq_advanced_authentication	< 6.3	cpe:2.3:a:microfocus:netiq_advanced_authentication::::::::
microfocus	netiq_advanced_authentication	6.3	cpe:2.3:a:microfocus:netiq_advanced_authentication:6.3:-::::::
microfocus	netiq_advanced_authentication	6.3	cpe:2.3:a:microfocus:netiq_advanced_authentication:6.3:sp1::::::
microfocus	netiq_advanced_authentication	6.3	cpe:2.3:a:microfocus:netiq_advanced_authentication:6.3:sp2::::::
microfocus	netiq_advanced_authentication	6.3	cpe:2.3:a:microfocus:netiq_advanced_authentication:6.3:sp3::::::
microfocus	netiq_advanced_authentication	6.3	cpe:2.3:a:microfocus:netiq_advanced_authentication:6.3:sp4::::::
microfocus	netiq_advanced_authentication	6.3	cpe:2.3:a:microfocus:netiq_advanced_authentication:6.3:sp4_patch1::::::
microfocus	netiq_advanced_authentication	6.3	cpe:2.3:a:microfocus:netiq_advanced_authentication:6.3:sp5::::::

References for CVE-2021-22530

URL	Tags
https://www.netiq.com/documentation/advanced-authentication-63/advanced-authentication-releasenotes-6351/data/advanced-authentication-releasenotes-6351.html	Release Notes

URL

CVE-2021-22530 | Improper account management vulnerability in NetIQ Advance Authentication

Exploit prediction scoring system (EPSS) score for CVE-2021-22530

Common vulnerability scoring system (CVSS) metrics for CVE-2021-22530

Weakness enumeration for CVE-2021-22530

Affected software / configurations for CVE-2021-22530

References for CVE-2021-22530