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CVE-2020-17392

27
FAUCET Score

CVE-2020-17392 is a local privilege escalation vulnerability affecting Parallels Desktop 15.1.3-47255. The flaw in the prl_hypervisor kext allows an attacker with low-privileged code execution to escalate privileges to kernel context due to improper validation of user-supplied values. Rated 8.8 HIGH (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H), it requires local access and has high impact on confidentiality, integrity, and availability. Currently, there is no known public exploit code (Metasploit, Nuclei, ExploitDB), it is not listed on the KEV catalog, and shows no community discussion or media coverage, indicating low active exploitation or public awareness.

Impacted Technologies

VendorProductVersion(s)CPE
< 16.0.0CPE matchmatch criteria
cpe:2.3:a:parallels:parallels_desktop:*:*:*:*:*:macos:*:*

CVSS Data

CVSS version used by this source: 3.0

8.8HIGH

CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
2.0
Impact Score
6.0
CvssVersion
3.0

Exploit Intelligence

EPSS Score
0.53%
Probability of exploitation in next 30 days
EPSS Percentile
41.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0053 is in the 81st percentile among its peer group of 17,061 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.2 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

kb.parallels.com / en/125013
Vendor Advisory
zerodayinitiative.com / advisories/ZDI-20-1010
Third Party AdvisoryVDB Entry