CVE-2018-20621
CVE-2018-20621 is a high-severity vulnerability in Microvirt Memu with a CVSS 3.x base score of 7.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-732.
Key facts
- Severity: High (CVSS 3.x base score 7.8)
- CVSS v2: 7.2
- EPSS exploit prediction: 1% (55th percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-732
- Affected product: Microvirt Memu
- Published:
- Last modified:
Description
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.
Frequently asked questions
- What is 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.
- How severe is CVE-2018-20621?
- CVE-2018-20621 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
- Is CVE-2018-20621 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (55th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2018-20621?
- CVE-2018-20621 affects Microvirt Memu. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2018-20621?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
- When was CVE-2018-20621 published?
- CVE-2018-20621 was published on 2019-03-13 and last updated on 2026-06-17.
References
Affected products (1)
- cpe:2.3:a:microvirt:memu:6.0.6:*:*:*:*:*:*:*
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