CVE & CISA-KEV Catalog

CVE-2021-21999

HIGH
7.8
CVSS v3
NVD

Description

VMware Tools for Windows (11.x.y prior to 11.2.6), VMware Remote Console for Windows (12.x prior to 12.0.1) , VMware App Volumes (2.x prior to 2.18.10 and 4 prior to 2103) contain a local privilege escalation vulnerability. An attacker with normal access to a virtual machine may exploit this issue by placing a malicious file renamed as `openssl.cnf' in an unrestricted directory which would allow code to be executed with elevated privileges.

CWE-427

How to fix

Remediation Available
app volumesNVD
Affected:>= 4, < 2103Fixed in:2103CVE-2021-21999derived from NVD
remote consoleNVD
Affected:>= 12.0.0, < 12.0.1Fixed in:12.0.1CVE-2021-21999derived from NVD
toolsNVD
Affected:>= 11.0.0, < 11.2.6Fixed in:11.2.6CVE-2021-21999derived from NVD

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorLocal
Attack ComplexityLow
Privileges RequiredLow
User InteractionNone
ScopeUnchanged

Impact

ConfidentialityHigh
IntegrityHigh
AvailabilityHigh

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

Exploit Intelligence

1.38%probability of exploitation in 30 days
69thpercentile

Moderate risk: more likely to be exploited than 69% of all known CVEs.

References

Third-Party Advisory1
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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2024-11-21.