Vulnerability in Apple macOS
CVE-2020-3957
VMware Fusion (11.x before 11.5.5), VMware Remote Console for Mac (11.x and prior) and VMware Horizon Client for Mac (5.x and prior) contain a local privilege escalation vulnerability due to a Time-of-check Time-of-use (TOCTOU) issue in the service opener. Successful exploitation of this issue may allow attackers with normal user privileges to escalate their privileges to root on the system where Fusion, VMRC and Horizon Client are installed.
Vulnerability class: TOCTOU (Time-of-Check to Time-of-Use)
EPSS: 0.002 (11.8th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.0 (High). Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H.
Affected products
- Apple Macos
- Vmware Fusion
- Vmware Horizon_client
- Vmware Remote_console
- Vmware Fusion — versions 11.x before 11.5.5
- Vmware Horizon Client For Mac — versions 5.x and prior
- Vmware Remote Console For Mac — versions V11.x and prior
Weakness classification (CWE)
References
- security@vmware.com (x_refsource_CONFIRM, Vendor Advisory)
Frequently asked questions
- What is CVE-2020-3957?
- CVE-2020-3957 is a high-severity vulnerability in Apple macOS, classified under Time-of-check Time-of-use (TOCTOU) Race Condition. CVSS score: 7.0/10. Published 2020-05-29.
- How severe is CVE-2020-3957?
- High severity. CVSS v3 base score is 7.0 out of 10.