Is CVE-2021-22049 actively exploited?

No active exploitation of CVE-2021-22049 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2021-22049 be exploited remotely?

Yes. CVE-2021-22049 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2021-22049?

CVE-2021-22049 has a CVSS score of 9.8 (CRITICAL).

HOME VULNERABILITIESCVE-2021-22049

CRITICAL

CVE-2021-22049

CWE-918Published: November 24, 2021· Updated: Jun 17, 2026

9.8

CVSS v3.1

Official Description

The vSphere Web Client (FLEX/Flash) contains an SSRF (Server Side Request Forgery) vulnerability in the vSAN Web Client (vSAN UI) plug-in. A malicious actor with network access to port 443 on vCenter Server may exploit this issue by accessing a URL request outside of vCenter Server or accessing an internal service.

NVD Source

Technical Analysis

CVE-2021-22049 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 9.8.