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Exploited vulnerability · CISA KEV

Is CVE-2021-22054 exploited? Yes: in CISA KEV since 9 Mar 2026

Gociux · Omnissa Workspace One UEM · data: CISA KEV, CVE record, FIRST EPSS

Yes. CVE-2021-22054, Omnissa Workspace ONE Server-Side Request Forgery, is being exploited in the wild. CISA added it to its Known Exploited Vulnerabilities catalog on 9 Mar 2026, 1543 days after it was published. It affects Omnissa Workspace One UEM. If you run it, CISA's required action is: Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

exploitedYesCISA KEV · 9 Mar 2026
ransomwareNot knownno confirmed use
EPSStop 1%among the most likely CVEs to be exploited
severity7.5CVSS 3.1 · high
US federal due23 Mar 2026BOD 22-01 deadline

What it is

Omnissa Workspace One UEM formerly known as VMware Workspace One UEM contains a server-side request forgery (SSRF) vulnerability that could allow a malicious actor with network access to UEM to send their requests without authentication and to gain access to sensitive information.

VendorOmnissa (1 exploited CVE in KEV)
ProductWorkspace One UEM
VulnerabilityOmnissa Workspace ONE Server-Side Request Forgery
WeaknessCWE-918
Published17 Dec 2021
Added to KEV9 Mar 2026
Reported by (CNA)vmware

What to do

  1. Check whether you run it. Look for Workspace One UEM in your asset inventory, including appliances and cloud images. Stack check lists every exploited Omnissa CVE at once.
  2. Apply the fix. Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
  3. If you can't patch today, take the affected service off the internet or restrict who can reach it, and check its logs for signs of compromise since 17 Dec 2021.
  4. Get told next time. Email alerts when CISA adds a CVE for Omnissa.

References

Questions

Is CVE-2021-22054 being exploited?

Yes. CISA added CVE-2021-22054 to the Known Exploited Vulnerabilities catalog on 9 Mar 2026, which means there is reliable evidence of exploitation in the wild.

Is CVE-2021-22054 used in ransomware attacks?

CISA does not list known ransomware use for it. That can change, and exploitation alone is reason to fix it first.

How do I fix CVE-2021-22054?

Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable. Check Omnissa's advisory for the fixed versions, and if you can't patch quickly, restrict access to the affected Workspace One UEM and watch it for signs of compromise.

Sources: CISA KEV (exploitation, ransomware use, required action, due date), the CVE record (publication date, CVSS, CNA), NVD and FIRST EPSS (live score). More: all KEV additions in March 2026 · act-now radar.

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