CVE-2021-22017 KEV
5.3
MEDIUM · CVSS 3.1 · EPSS 49.2% (pctl 99)
Patch first
On CISA KEV — known exploited in the wild, due 2022-01-24.
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.
Scoring
| CVSS | 5.3 (MEDIUM, v3.1) |
|---|---|
| Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N |
| EPSS | 49.18% — more likely to be exploited than 99% of all CVEs |
| On CISA KEV | yes — remediate by 2022-01-24 |
| Public exploit | none known |
| Published | 2021-09-23 |
| Last modified | 2026-06-17 |
CISA KEV
| Name | VMware vCenter Server Improper Access Control |
|---|---|
| Added | 2022-01-10 |
| Due | 2022-01-24 |
| Vendor / product | VMware / vCenter Server |
| Ransomware use | none reported |
Affected (1)
| Vendor | Product |
|---|---|
| vmware | vcenter server |
References
→ the Explorer · watch your stack · NVD