Exploited vulnerabilities / CVE-2021-22054
Confirmed exploited · server-side request forgery · Omnissa Workspace One UEMCVE-2021-22054
Omnissa Workspace One UEM server-side request forgery, confirmed exploited in the wild.
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.
| CISA's name for it | Omnissa Workspace ONE Server-Side Request Forgery |
|---|---|
| Vendor and product | Omnissa · Workspace One UEM |
| Type | server-side request forgery · CWE-918 |
| Exploited | Confirmed by CISA listed 9 March 2026 |
| Likelihood | one of the most likely to be exploited of every vulnerability tracked |
| Deadline | 23 March 2026 · already passed |
| Used in ransomware | Not reported |
| Advisories | web.archive.org ↗ · nvd.nist.gov ↗ |
Three steps, in this order
Apply the vendor's fix or mitigation; CISA lists only vulnerabilities seen exploited.
If you cannot patch now, restrict network access to the affected product.
Check for signs of compromise since the date it was added to the list.
| CISA's required action | Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable. |
|---|
Know before someone else finds it
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CVE-2021-22054 in short
Is CVE-2021-22054 being exploited?
Yes. CISA added CVE-2021-22054 to its Known Exploited Vulnerabilities catalogue on 9 March 2026, which it does only on evidence of exploitation in the wild.
What is the CISA deadline for CVE-2021-22054?
US federal agencies must remediate it by 23 March 2026. Everyone else should treat that date as the latest safe point to patch an internet-facing system.
How likely is CVE-2021-22054 to be exploited in the next 30 days?
FIRST's Exploit Prediction Scoring System gives it 100%, the 99th percentile of every CVE it scores.
How do I fix CVE-2021-22054?
Apply the vendor's fix or mitigation; CISA lists only vulnerabilities seen exploited. If you cannot patch now, restrict network access to the affected product. Check for signs of compromise since the date it was added to the list.
Sources: CISA Known Exploited Vulnerabilities catalogue (released 10 November 2026) and FIRST EPSS. Page compiled automatically by SAK T.L.M, the threat-intelligence tool of SAK T.E.C, on 13 November 2026.