Vulnerability in Microsoft .Net Framework 3.0
CVE-2020-1066
An elevation of privilege vulnerability exists in .NET Framework which could allow an attacker to elevate their privilege level.To exploit the vulnerability, an attacker would first have to access the local machine, and then run a malicious program.The update addresses the vulnerability by correcting how .NET Framework activates COM objects., aka '.NET Framework Elevation of Privilege Vulnerability'.
EPSS: 0.023 (81.6th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
Affected products
- Microsoft .Net Framework 3.0 — versions Service Pack 2 on Windows Server 2008 for 32-bit Systems Service Pack 2, Service Pack 2 on Windows Server 2008 for x64-based Systems Service Pack 2
- Microsoft .Net Framework 3.5.1 — versions Windows 7 for 32-bit Systems Service Pack 1, Windows 7 for x64-based Systems Service Pack 1, Windows Server 2008 R2 for x64-based Systems Service Pack 1
- Microsoft .Net_framework — versions 3.0, 3.5.1
- Microsoft Windows_7
- Microsoft Windows_server_2008 — versions r2
Public proof-of-concept exploits
References
- secure@microsoft.com (Patch, x_refsource_MISC, Vendor Advisory)
Frequently asked questions
- What is CVE-2020-1066?
- CVE-2020-1066 is a high-severity vulnerability in Microsoft .Net Framework 3.0. CVSS score: 7.8/10. Published 2020-05-21.
- How severe is CVE-2020-1066?
- High severity. CVSS v3 base score is 7.8 out of 10.
- Is CVE-2020-1066 known to be exploited?
- 40 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.