Vulnerability in Parallels Desktop
CVE-2021-31423
This vulnerability allows local attackers to disclose sensitive information on affected installations of Parallels Desktop 15.1.5-47309. An attacker must first obtain the ability to execute high-privileged code on the target guest system in order to exploit this vulnerability. The specific flaw exists within the Toolgate component. The issue results from the lack of proper initialization of memory prior to accessing it. An attacker can leverage this in conjunction with other vulnerabilities to escalate privileges and execute arbitrary code in the context of the hypervisor. Was ZDI-CAN-12528.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.0 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:N/A:N.
EPSS exploit prediction
EPSS: 0.004 (36.5th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 36th percentile — 36.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000
Affected products
- Parallels Desktop — versions 15.1.5-47309
- Parallels Desktop — versions 15.1.5-47309
Weakness classification (CWE)
References
- kb.parallels.com/en/125013 (Vendor Advisory)
- www.zerodayinitiative.com/advisories/ZDI-21-431/ (VDB Entry, Third Party Advisory)
Frequently asked questions
- What is CVE-2021-31423?
- CVE-2021-31423 is a medium-severity vulnerability in Parallels Desktop, classified under Use of Uninitialized Resource. CVSS score: 6.0/10. Published 2021-04-29.
- How severe is CVE-2021-31423?
- Medium severity. CVSS v3 base score is 6.0 out of 10.