Cyber Resilience

CVE-2021-21991

High

Published: 22 September 2021

Published
22 September 2021
Modified
21 November 2024
KEV Added
Patch
CVSS Score v3.1 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS Score 0.0019 41.3th percentile
Risk Priority 16 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2021-21991 is a high-severity an unspecified weakness vulnerability in Vmware Vcenter Server. Its CVSS base score is 7.8 (High).

Operationally, ranked at the 41.3th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.

EU & UK References

Vulnerability details

The vCenter Server contains a local privilege escalation vulnerability due to the way it handles session tokens. A malicious actor with non-administrative user access on vCenter Server host may exploit this issue to escalate privileges to Administrator on the vSphere…

more

Client (HTML5) or vCenter Server vSphere Web Client (FLEX/Flash).

CWE(s)

Related Threats

No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.

Affected Assets

vmware
cloud foundation
3.0 — 3.10.2.2 · 4.0 — 4.3
vmware
vcenter server
6.5, 6.7, 7.0

Mitigating Controls

No mitigating controls mapped yet. The per-CVE control annotator has not reached this CVE.

References