CVE-2021-22529 [Medium] | Information Disclosure in Netiq Advanced Authentication

CVE-2021-22529 is rated Low Risk (31.2/100): CVSS Medium severity, with low exploitation likelihood (EPSS 0.05%). Monitor for updates and reassess as exploit intelligence or EPSS changes.

#	Date	Old EPSS score	New EPSS score	Delta (New - Old)
1	2026-01-17	0.04%	0.05%	+0.01%
2	2024-08-29	—	0.04%	—

Date

Old EPSS score

New EPSS score

Delta (New - Old)

2026-01-17

0.04%

0.05%

+0.01%

2024-08-29

—

0.04%

—

Base score	Version	Severity	Vector	Exploitability	Impact	Score source
6.3	3.1	MEDIUM	`CVSS:3.1/AV:L/AC:H/PR:H/UI:R/S:U/C:H/I:H/A:H` Click to expand Attack vector (AV:L) They already need access on the box, or another person has to do something wrong; it’s not a remote drive-by. Attack complexity (AC:H) Even with access, the exploit needs extra luck, timing, or a fussy environment to actually work. Privileges required (PR:H) They need powerful rights—admin, root, or similar—before this pays off. User interaction (UI:R) A real person has to do something—click, install, enable—otherwise it doesn’t land. Scope (S:U) Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems. Confidentiality (C:H) Serious risk that confidential data gets exposed in a big way. Integrity (I:H) They could widely tamper with or forge data—trust in the data is badly hurt. Availability (A:H) Could take the service down hard or make it unusable for people who depend on it.	0.3	5.9	[email protected]
5.5	3.1	MEDIUM	`CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N` Click to expand Attack vector (AV:L) They already need access on the box, or another person has to do something wrong; it’s not a remote drive-by. 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:N) Nobody has to click “OK” or open a trap file; it can work without a victim helping. Scope (S:U) Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems. Confidentiality (C:H) Serious risk that confidential data gets exposed in a big way. Integrity (I:N) Data isn’t meaningfully altered or forged. Availability (A:N) Service keeps running; no real outage angle.	1.8	3.6	[email protected]

Base score

Version

Severity

Vector

Exploitability

Impact

Score source

6.3

3.1

MEDIUM

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

Attack vector (AV:L): They already need access on the box, or another person has to do something wrong; it’s not a remote drive-by.
Attack complexity (AC:H): Even with access, the exploit needs extra luck, timing, or a fussy environment to actually work.
Privileges required (PR:H): They need powerful rights—admin, root, or similar—before this pays off.
User interaction (UI:R): A real person has to do something—click, install, enable—otherwise it doesn’t land.
Scope (S:U): Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H): Serious risk that confidential data gets exposed in a big way.
Integrity (I:H): They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H): Could take the service down hard or make it unusable for people who depend on it.

0.3

5.9

[email protected]

5.5

3.1

MEDIUM

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

Attack vector (AV:L): They already need access on the box, or another person has to do something wrong; it’s not a remote drive-by.
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:N): Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U): Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H): Serious risk that confidential data gets exposed in a big way.
Integrity (I:N): Data isn’t meaningfully altered or forged.
Availability (A:N): Service keeps running; no real outage angle.

1.8

3.6

[email protected]

Affected software / configurations for CVE-2021-22529

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-2021-22529

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

URL

CVE-2021-22529 | Sensitive Data Exposure leaks potential information in NetIQ Advance Authentication

Exploit prediction scoring system (EPSS) score for CVE-2021-22529

Common vulnerability scoring system (CVSS) metrics for CVE-2021-22529

Weakness enumeration for CVE-2021-22529

Affected software / configurations for CVE-2021-22529

References for CVE-2021-22529