Omnissa Workspace ONE Server-Side Request Forgery

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.

cat cve-2021-22054.json

Vendor: Omnissa
Product: Workspace One UEM
CVSS: 7.5
EPSS (exploit probability): 99.7%
Status: kev
CISA patch-by (BOD 22-01): March 23, 2026
Added to KEV: March 9, 2026
Source: https://nvd.nist.gov/vuln/detail/CVE-2021-22054

Is CVE-2021-22054 being exploited?

Yes. CISA added CVE-2021-22054 to its Known Exploited Vulnerabilities catalog on March 9, 2026. CISA only lists a CVE when it has reliable evidence of exploitation in the wild.

FIRST's EPSS model puts the probability of exploitation activity in the next 30 days at 99.7% (scored October 14, 2026).

CISA KEV[ LISTED ]
ENISA EUVD (exploited)[ — ]
CIRCL KEV[ — ]

Catalog snapshot 2026-10-24. Full cross-catalog view: /kev-comparison

CVE-2021-22054 timeline

2021-12-17Published to NVD
2026-03-09Added to CISA KEV+1543d

Every event links to its source. Catalog dates are each catalog's own; day offsets count from NVD publication. Data: JSON

What to do

CISA required actionApply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

US federal civilian agencies must remediate by March 23, 2026 (14 days after listing) under BOD 22-01. Everyone else: that deadline is a sensible upper bound, not a target. Vendor guidance and the NVD record are linked under Source above.