What is CVE-2018-20621?

CVE-2018-20621 is a high-severity vulnerability in Microvirt Memu, classified under Incorrect Permission Assignment for Critical Resource. CVSS score: 7.8/10. Published 2019-03-13.

How severe is CVE-2018-20621?

High severity. CVSS v3 base score is 7.8 out of 10.

Is CVE-2018-20621 known to be exploited?

9 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Vulnerability in Microvirt Memu

CVE-2018-20621

An issue was discovered in Microvirt MEmu 6.0.6. The MemuService.exe service binary is vulnerable to local privilege escalation through binary planting due to insecure permissions set at install time. This allows code to be run as NT AUTHORITY/SYSTEM.

EPSS: 0.009 (55.8th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.8 (High). Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

Affected products

Microvirt Memu — versions 6.0.6
N/a — versions n/a

Weakness classification (CWE)

CWE-732 — Incorrect Permission Assignment for Critical Resource

Public proof-of-concept exploits

References

cve@mitre.org (Exploit, Third Party Advisory, x_refsource_MISC)

Frequently asked questions

What is CVE-2018-20621?: CVE-2018-20621 is a high-severity vulnerability in Microvirt Memu, classified under Incorrect Permission Assignment for Critical Resource. CVSS score: 7.8/10. Published 2019-03-13.
How severe is CVE-2018-20621?: High severity. CVSS v3 base score is 7.8 out of 10.
Is CVE-2018-20621 known to be exploited?: 9 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.