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CISA Known Exploited Vulnerability

This CVE is actively exploited in the wild. CISA mandates federal agencies to patch immediately.

CVE

CVE-2021-22017

5.3

CVSSmedium

Exploitable remotely over the internet · no authentication required.

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.

Attack Vector

Network

Privileges Req.

None

User Interaction

None

vmware vcenter server, vmware cloud foundation

Updated Sep 26, 2026View on NVD →

S4E scanner

mediumProduct Based Network Vulnerabilities~10 seconds

CVE-2021-22017 Scanner

CVE-2021-22017 Scanner - Improper Access Control vulnerability in vCenter Server

Used 3.5k times · 3.3k assets checked · domain, subdomain, ipv4

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