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High severity · published Oct 25, 2021
CVE-2021-34864
This vulnerability allows local attackers to escalate privileges on affected installations of Parallels Desktop 16.1.3 (49160)
8.8
CVSS
0.2%
EPSS
No
On KEV
Description
This vulnerability allows local attackers to escalate privileges on affected installations of Parallels Desktop 16.1.3 (49160). An attacker must first obtain the ability to execute low-privileged code on the target guest system in order to exploit this vulnerability. The specific flaw exists within the WinAppHelper component. The issue results from the lack of proper access control. An attacker can leverage this vulnerability to escalate privileges and execute arbitrary code in the context of the hypervisor. Was ZDI-CAN-13543.
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Attack vector
Local
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 15% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
PD
Parallels Desktop · Parallels
16.1.3 · source: NVD
Affected product
PD
Parallels Desktop
Parallels
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-34864
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-34864
Third Party Advisory
https://www.zerodayinitiative.com/advisories/ZDI-21-1000/
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