CVE-2021-21980

Cloud Foundation vulnerability

CVSS

7.5

EPSS

4.6%

EPSS pct

91th

Exploited

No known

The vSphere Web Client (FLEX/Flash) contains an unauthorized arbitrary file read vulnerability. A malicious actor with network access to port 443 on vCenter Server may exploit this issue to gain access to sensitive information.

Affected vendor

Vmware

Affected product

Cloud Foundation

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Published

2021-11-24

Risk analysis

Based on its CVSS vector, this vulnerability is exploitable over the network, low attack complexity, requiring no privileges, no user interaction. Successful exploitation leads to high impact to confidentiality.

Its EPSS score of 4.6% reflects a lower probability of exploitation activity in the wild over the next 30 days, placing it above 91% of all scored CVEs.

Check your external exposure to CVE-2021-21980

Confirm whether Vmware Cloud Foundation is running on any internet-facing host or subdomain.
Match discovered service fingerprints against the version affected by CVE-2021-21980.
Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2021-21980

ThreatPort's external attack surface scanner checks your internet-facing assets — agentlessly, from the outside in — for the exposed services and versions that CVE-2021-21980 affects, then prioritises the finding by real risk using CISA KEV and FIRST.org EPSS.

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