CVE-2021-33159 [High] | Authentication Bypass in Active Management Technol…

CVE-2021-33159 is rated Low Risk (37.3/100): CVSS High severity, with low exploitation likelihood (EPSS 0.07%). Monitor for updates and reassess as exploit intelligence or EPSS changes.

#	Date	Old EPSS score	New EPSS score	Delta (New - Old)
1	2026-03-14	0.04%	0.07%	+0.03%
2	2023-03-07	0.89%	0.04%	-0.84%
3	2022-11-12	—	0.89%	—

Date

Old EPSS score

New EPSS score

Delta (New - Old)

2026-03-14

0.04%

0.07%

+0.03%

2023-03-07

0.89%

0.04%

-0.84%

2022-11-12

—

0.89%

—

Base score	Version	Severity	Vector	Exploitability	Impact	Score source
7.4	3.1	HIGH	`CVSS:3.1/AV:L/AC:L/PR:H/UI:R/S:C/C:N/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:L) Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup. 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:C) Breaking this can reach past the original component and bite other resources—bigger blast radius. Confidentiality (C:N) Doesn’t really leak secrets in a meaningful 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.	1.1	5.8	[email protected]
6.7	3.1	MEDIUM	`CVSS:3.1/AV:L/AC:L/PR:H/UI:N/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:L) Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup. Privileges required (PR:H) They need powerful rights—admin, root, or similar—before this pays off. 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: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.	0.8	5.9	[email protected]

Base score

Version

Severity

Vector

Exploitability

Impact

Score source

7.4

3.1

HIGH

CVSS:3.1/AV:L/AC:L/PR:H/UI:R/S:C/C:N/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:L): Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
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:C): Breaking this can reach past the original component and bite other resources—bigger blast radius.
Confidentiality (C:N): Doesn’t really leak secrets in a meaningful 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.

1.1

5.8

[email protected]

6.7

3.1

MEDIUM

CVSS:3.1/AV:L/AC:L/PR:H/UI:N/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:L): Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:H): They need powerful rights—admin, root, or similar—before this pays off.
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: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.

0.8

5.9

[email protected]

Affected software / configurations for CVE-2021-33159

Vendor	Product	Version	Raw CPE
intel	active_management_technology_firmware	< 11.8.93	cpe:2.3:o:intel:active_management_technology_firmware::::::::
intel	active_management_technology_firmware	>= 11.12.0, < 11.12.93	cpe:2.3:o:intel:active_management_technology_firmware::::::::
intel	active_management_technology_firmware	>= 11.22.0, < 11.22.93	cpe:2.3:o:intel:active_management_technology_firmware::::::::
intel	active_management_technology_firmware	>= 12.0, < 12.0.92	cpe:2.3:o:intel:active_management_technology_firmware::::::::
intel	active_management_technology_firmware	>= 14.1, < 14.1.67	cpe:2.3:o:intel:active_management_technology_firmware::::::::
intel	active_management_technology_firmware	>= 15.0, < 15.0.42	cpe:2.3:o:intel:active_management_technology_firmware::::::::
intel	active_management_technology_firmware	>= 16.1.0, < 16.1.25	cpe:2.3:o:intel:active_management_technology_firmware::::::::

References for CVE-2021-33159

URL	Tags
https://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-00610.html	Vendor Advisory

URL

CVE-2021-33159

Exploit prediction scoring system (EPSS) score for CVE-2021-33159

Common vulnerability scoring system (CVSS) metrics for CVE-2021-33159

Weakness enumeration for CVE-2021-33159

Affected software / configurations for CVE-2021-33159

References for CVE-2021-33159