# 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.

- Page: https://www.vulneraibility.com/cve/CVE-2021-22017
- CVSS: 5.3
- Known exploited: yes, in CISA KEV since 2022-01-10; CISA due date 2022-01-24
- EPSS: 49.18% (percentile 98.9)
- Detection templates only, no public exploit found: 1 Nuclei template
- CISA SSVC: exploitation active, automatable yes, technical impact partial (assessed 2025-01-29)
- Published: 2021-09-23

## Affected versions

- VMware vCenter Server, VMware Cloud Foundation: affected VMware vCenter Server(6.7 before 6.7 U3o and 6.5 before 6.5 U3q) and VMware Cloud Foundation 3.x before 3.10.2.2

A version outside these ranges is not a statement that it is unaffected.

## References

- [other] https://www.vmware.com/security/advisories/VMSA-2021-0020.html
- [other] https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-22017

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Summary, impact and action are written by the vulneraibility.com AI analysis pipeline from the CVE record, NVD, CISA and FIRST data; verify against the references.