CVE-2021-22017
CVSS v3
5.3
MEDIUM
EPSS Score
76.7 %
exploit probability
CISA KEV
Yes
known exploited
Exploitation
—
SSVC status
Description
Rhttproxy as used in vCenter Server contains a vulnerability due to improper implementation of URI normalization. A malicious actor with network access to port 443 on vCenter Server may exploit this issue to bypass proxy leading to internal endpoints being accessed.
CISA Known Exploited Vulnerability
- Date Added
- 2022-01-10
- Patch Due Date
- 2022-01-24
- Ransomware Use
- Unknown
Technical details
- Published
- 2021-09-23
Frequently asked questions
What is CVE-2021-22017?
Rhttproxy as used in vCenter Server contains a vulnerability due to improper implementation of URI normalization. A malicious actor with network access to port 443 on vCenter Server may exploit this issue to bypass proxy leading to internal endpoints being accessed.
Is CVE-2021-22017 actively exploited?
Yes. CVE-2021-22017 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 2022-01-24.
What is the CVSS score for CVE-2021-22017?
CVE-2021-22017 has a CVSS v3 base score of 5.3 (MEDIUM severity).
Is CVE-2021-22017 affecting your environment?
Use isMalicious to check if any of your IPs or domains are associated with this vulnerability's IOCs.
No credit card required · 500 free checks/month · Free API key
Other 2021 vulnerabilities worth triaging
Ranked by exploit probability (EPSS).