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ExploitedIn CISA KEV

CVE-2021-21975

Exploitation confirmed. First attested on 2022-01-18 by CISA-ADP, CISA KEV, GCVE · kevintel, GCVE · shadowserver.

  • Published2021-03-31
  • WeaknessCWE-918

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

Server Side Request Forgery in vRealize Operations Manager API (CVE-2021-21975) prior to 8.4 may allow a malicious actor with network access to the vRealize Operations Manager API can perform a Server Side Request Forgery attack to steal administrative credentials.

Timeline

dates in UTC
  1. 2021-03-3118:15CVE publishedNVD
  2. 2022-01-18Added to the CISA KEV catalogCISA KEV
  3. 2022-01-18Listed as exploited by GCVEGCVE
  4. 2022-01-18Exploitation first reportedCISA KEV
  5. 2026-08-1203:55SSVC exploitation set to activeCISA-ADP

Observed activity

isMalicious corpus · updated 2026-11-03 21:37 UTC
Indicators tagged with this CVE, per day0 indicators over 7 days
Block these indicators
  • Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2021-21975?format=txt
  • CSV export: https://api.ismalicious.com/edl/cve/CVE-2021-21975?format=csv
  • TAXII collection of exploited CVEs
  • The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD
Vmware cloud foundation
BranchAffectedFixed in
3.0= 3.0no fix published
3.0= 3.0.1no fix published
3.0= 3.0.1.1no fix published
3.5= 3.5no fix published
3.5= 3.5.1no fix published
3.7= 3.7no fix published
3.7= 3.7.1no fix published
3.7= 3.7.2no fix published
3.8= 3.8no fix published
3.8= 3.8.1no fix published
3.9= 3.9no fix published
3.9= 3.9.1no fix published
Vmware vrealize operations manager
BranchAffectedFixed in
7.0= 7.0.0no fix published
7.5= 7.5.0no fix published
8.0= 8.0.0no fix published
8.0= 8.0.1no fix published
8.1= 8.1.0no fix published
8.1= 8.1.1no fix published
8.2= 8.2.0no fix published
8.3= 8.3.0no fix published
Vmware vrealize suite lifecycle manager
BranchAffectedFixed in
8.0= 8.0no fix published
8.0= 8.0.1no fix published
8.1= 8.1no fix published
8.2= 8.2no fix published

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Products declared by the CNA1 product

As vmware, the CNA that assigned this CVE, declared them in the CVE record; versions as written.

  • VMware vRealize Operations
    Affected
    • = VMware vRealize Operations prior to 8.4no fix stated

Source: the CNA record (CVE Program), © The MITRE Corporation,CVE Terms of UseCVE recordupdated 2021-04-27

Fix

  1. CISA’s required action: Apply updates per vendor instructions.due 2022-02-01

Advisories and patches

Detection

read 2026-11-02 22:42 UTC
Nuclei template
available
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof-of-concept repositories
8 repositories, unverifiedHenry4E36/VMWare-vRealize-SSRFdorkerdevil/CVE-2021-21975Al1ex/CVE-2021-21975GuayoyoCyber/CVE-2021-21975murataydemir/CVE-2021-21975
PoC-in-GitHub
Metasploit modules
1 moduleexploit/linux/http/vmware_vrops_mgr_ssrf_rcerank: excellentModule metadata: Metasploit Framework, © Rapid7, Inc., BSD-3-Clause.
Metasploit Framework

CISA Known Exploited Vulnerability

Date Added
2022-01-18
Patch Due Date
2022-02-01
Ransomware Use
Known
Required Action
Apply updates per vendor instructions.

Sources

Identifiers

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Published
2021-03-31
Last Modified
2026-10-02
NVD status
Analyzed
GitHub Advisory
GHSA-px27-325w-m34c

Frequently asked questions

What is CVE-2021-21975?

Server Side Request Forgery in vRealize Operations Manager API (CVE-2021-21975) prior to 8.4 may allow a malicious actor with network access to the vRealize Operations Manager API can perform a Server Side Request Forgery attack to steal administrative credentials.

Is CVE-2021-21975 actively exploited?

Yes. CVE-2021-21975 is on the CISA Known Exploited Vulnerabilities (KEV) catalog, meaning it has been confirmed as actively exploited in the wild. CISA requires federal agencies to patch by 2022-02-01.

What is the CVSS score for CVE-2021-21975?

CVE-2021-21975 has a CVSS v3 base score of 7.5 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.

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Sources for this record