CVE-2021-21975 [Exploited] | Vmware CLOUD FOUNDATION

CVE-2021-21975 is rated Critical Active Threat (90.5/100): CVSS High severity, with high exploitation likelihood (EPSS 94.42%, 100th percentile). CISA KEV confirms active exploitation (added 2022-01-18) affecting VMware / vRealize Operations Manager API. a weakness (CWE-918) Unauthenticated remote administrative access may be possible. The CISA remediation deadline has passed—treat as an emergency patch priority.

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#	Date	Old EPSS score	New EPSS score	Delta (New - Old)
1	2025-11-21	93.95%	94.42%	+0.46%
2	2025-11-18	94.42%	93.95%	-0.46%
3	2025-09-16	—	94.42%	—

Date

Old EPSS score

New EPSS score

Delta (New - Old)

2025-11-21

93.95%

94.42%

+0.46%

2025-11-18

94.42%

93.95%

-0.46%

2025-09-16

—

94.42%

—

Base score	Version	Severity	Vector	Exploitability	Impact	Score source
7.5	3.1	HIGH	`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N` 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: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.	3.9	3.6	[email protected]
7.5	3.1	HIGH	`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N` 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: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.	3.9	3.6	134c704f-9b21-4f2e-91b3-4a467353bcc0
5.0	2.0	MEDIUM	`AV:N/AC:L/Au:N/C:P/I:N/A:N` Click to expand Access vector (AV:N) Can be exploited remotely over network reachability. Access complexity (AC:L) Exploitation conditions are straightforward and predictable. Authentication (AU:N) No authentication is required. Confidentiality impact (C:P) Partial confidentiality impact. Integrity impact (I:N) No integrity impact. Availability impact (A:N) No availability impact.	10.0	2.9	[email protected]

Base score

Version

Severity

Vector

Exploitability

Impact

Score source

7.5

3.1

HIGH

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

3.9

3.6

[email protected]

7.5

3.1

HIGH

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

3.9

3.6

134c704f-9b21-4f2e-91b3-4a467353bcc0

5.0

2.0

MEDIUM

AV:N/AC:L/Au:N/C:P/I:N/A:N Click to expand

Access vector (AV:N): Can be exploited remotely over network reachability.
Access complexity (AC:L): Exploitation conditions are straightforward and predictable.
Authentication (AU:N): No authentication is required.
Confidentiality impact (C:P): Partial confidentiality impact.
Integrity impact (I:N): No integrity impact.
Availability impact (A:N): No availability impact.

10.0

2.9

[email protected]

Affected software / configurations for CVE-2021-21975

Vendor	Product	Version	Raw CPE
vmware	cloud_foundation	3.0	cpe:2.3:a:vmware:cloud_foundation:3.0:::::::*
vmware	cloud_foundation	3.0.1	cpe:2.3:a:vmware:cloud_foundation:3.0.1:::::::*
vmware	cloud_foundation	3.0.1.1	cpe:2.3:a:vmware:cloud_foundation:3.0.1.1:::::::*
vmware	cloud_foundation	3.5	cpe:2.3:a:vmware:cloud_foundation:3.5:::::::*
vmware	cloud_foundation	3.5.1	cpe:2.3:a:vmware:cloud_foundation:3.5.1:::::::*
vmware	cloud_foundation	3.7	cpe:2.3:a:vmware:cloud_foundation:3.7:::::::*
vmware	cloud_foundation	3.7.1	cpe:2.3:a:vmware:cloud_foundation:3.7.1:::::::*
vmware	cloud_foundation	3.7.2	cpe:2.3:a:vmware:cloud_foundation:3.7.2:::::::*
vmware	cloud_foundation	3.8	cpe:2.3:a:vmware:cloud_foundation:3.8:::::::*
vmware	cloud_foundation	3.8.1	cpe:2.3:a:vmware:cloud_foundation:3.8.1:::::::*
vmware	cloud_foundation	3.9	cpe:2.3:a:vmware:cloud_foundation:3.9:::::::*
vmware	cloud_foundation	3.9.1	cpe:2.3:a:vmware:cloud_foundation:3.9.1:::::::*
vmware	cloud_foundation	3.10	cpe:2.3:a:vmware:cloud_foundation:3.10:::::::*
vmware	cloud_foundation	4.0	cpe:2.3:a:vmware:cloud_foundation:4.0:::::::*
vmware	cloud_foundation	4.0.1	cpe:2.3:a:vmware:cloud_foundation:4.0.1:::::::*
vmware	vrealize_operations_manager	7.0.0	cpe:2.3:a:vmware:vrealize_operations_manager:7.0.0:::::::*
vmware	vrealize_operations_manager	7.5.0	cpe:2.3:a:vmware:vrealize_operations_manager:7.5.0:::::::*
vmware	vrealize_operations_manager	8.0.0	cpe:2.3:a:vmware:vrealize_operations_manager:8.0.0:::::::*
vmware	vrealize_operations_manager	8.0.1	cpe:2.3:a:vmware:vrealize_operations_manager:8.0.1:::::::*
vmware	vrealize_operations_manager	8.1.0	cpe:2.3:a:vmware:vrealize_operations_manager:8.1.0:::::::*
vmware	vrealize_operations_manager	8.1.1	cpe:2.3:a:vmware:vrealize_operations_manager:8.1.1:::::::*
vmware	vrealize_operations_manager	8.2.0	cpe:2.3:a:vmware:vrealize_operations_manager:8.2.0:::::::*
vmware	vrealize_operations_manager	8.3.0	cpe:2.3:a:vmware:vrealize_operations_manager:8.3.0:::::::*
vmware	vrealize_suite_lifecycle_manager	8.0	cpe:2.3:a:vmware:vrealize_suite_lifecycle_manager:8.0:::::::*
vmware	vrealize_suite_lifecycle_manager	8.0.1	cpe:2.3:a:vmware:vrealize_suite_lifecycle_manager:8.0.1:::::::*
vmware	vrealize_suite_lifecycle_manager	8.1	cpe:2.3:a:vmware:vrealize_suite_lifecycle_manager:8.1:::::::*
vmware	vrealize_suite_lifecycle_manager	8.2	cpe:2.3:a:vmware:vrealize_suite_lifecycle_manager:8.2:::::::*

References for CVE-2021-21975

URL	Tags
http://packetstormsecurity.com/files/162349/VMware-vRealize-Operations-Manager-Server-Side-Request-Forgery-Code-Execution.html	Exploit Third Party Advisory VDB Entry
https://www.vmware.com/security/advisories/VMSA-2021-0004.html	Vendor Advisory
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-21975	US Government Resource

URL

CVE-2021-21975

CISA KEV Record for CVE-2021-21975

Public exploit references (Exploit-DB) for CVE-2021-21975

Exploit prediction scoring system (EPSS) score for CVE-2021-21975

Common vulnerability scoring system (CVSS) metrics for CVE-2021-21975

Weakness enumeration for CVE-2021-21975

Affected software / configurations for CVE-2021-21975

References for CVE-2021-21975