CVE-2020-3950 · Severity: critical · CVSS 7.8 · Exploited in the wild · Published 2021-11-03
VMware Fusion, Remote Console, and Horizon Client for Mac contain a privilege escalation vulnerability due to the improper use of setuid binaries. A local attacker with normal user privileges can exploit this flaw to escalate their privileges to root on the affected macOS system.
Quick answers
Is CVE-2020-3950 exploited in the wild?
Yes. CVE-2020-3950 is known to be exploited in the wild, first recorded on 3 November 2021. Treat it as urgent.
How severe is CVE-2020-3950?
Critical severity, with a CVSS score of 7.8, published 3 November 2021.
Which products and versions are affected?
VMware Fusion 11.x before 11.5.2; VMware Remote Console (VMRC) for Mac 11.x and prior before 11.0.1; VMware Horizon Client for Mac 5.x and prior before 5.4.0.
Is there a fix for CVE-2020-3950?
No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
How is CVE-2020-3950 attacked?
It is attacked with local access, in a network appliance.
Am I affected by CVE-2020-3950?
Check whether anything you run is named in the advisory. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.
Affected products
VMware Fusion 11.x before 11.5.2
VMware Remote Console (VMRC) for Mac 11.x and prior before 11.0.1
VMware Horizon Client for Mac 5.x and prior before 5.4.0
Timeline
2020-03-12: advisory: Initial VMSA-2020-0005 advisory date (implied by reference)
2021-11-03: kev added: Added to CISA Known Exploited Vulnerabilities Catalog