Vulnerability identifier: #VU27822

Vulnerability risk: Low

CVSSv3.1: 7.6 [CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C]

CVE-ID: CVE-2020-1066

CWE-ID: CWE-264

Exploitation vector: Local

Exploit availability: Yes

Vulnerable software:
Microsoft .NET Framework
Server applications / Frameworks for developing and running applications

Vendor: Microsoft

Description

The vulnerability allows a local attacker to escalate privileges on the system.

The vulnerability exists due to the .NET Framework does not properly impose security restrictions. A local attacker can run a malicious program and gain elevated privileges on the target system. 

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Microsoft .NET Framework: 3.0, 3.5.1

---

External links
http://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-1066

---

Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability. However, proof of concept for this vulnerability is available.