SSRF in VMware Vcenter Server

CVE-2021-22049

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.

Vulnerability class: SSRF (Server-Side Request Forgery)

Published · last modified .

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.017 (76.8th percentile), scored .

Low probability of exploitation in the next 30 days, but still tracked. 77th percentile — 76.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS trend (30 days)EPSS over the last 30 days for CVE-2021-22049: held from 0.017 to 0.017.

EPSS over last 30 days · oldest: 0.017 · newest: 0.017 · change: +0.001

Affected products

  • VMware Vcenter Server — versions 6.5, 6.7, 7.0
  • VMware Vcenter Server And Cloud Foundation — versions VMware vCenter Server (6.7 before 6.7 U3p and 6.5 before 6.5 U3r) and VMware Cloud Foundation 3.x

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2021-22049?
CVE-2021-22049 is a critical-severity vulnerability in VMware Vcenter Server, classified under Server-Side Request Forgery (SSRF). CVSS score: 9.8/10. Published 2021-11-24.
How severe is CVE-2021-22049?
Critical severity. CVSS v3 base score is 9.8 out of 10.