Remote code execution in Microsoft .NET and Visual Studio
| Risk | High |
| Patch available | YES |
| Number of vulnerabilities | 1 |
| CVE-ID | CVE-2023-21808 |
| CWE-ID | CWE-20 |
| Exploitation vector | Network |
| Public exploit | N/A |
| Vulnerable software Subscribe |
Visual Studio Universal components / Libraries / Software for developers Microsoft .NET Framework Server applications / Frameworks for developing and running applications Microsoft .NET Core Server applications / Frameworks for developing and running applications |
| Vendor | Microsoft |
Security Bulletin
This security bulletin contains one high risk vulnerability.
1) Input validation error
EUVDB-ID: #VU72215
Risk: High
CVSSv3.1: 8.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]
CVE-ID: CVE-2023-21808
CWE-ID:
CWE-20 - Improper input validation
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to compromise the affected system.
The vulnerability exists due to insufficient validation of user-supplied input when parsing certain symbols. A remote attacker can pass specially crafted input to the application and execute arbitrary code on the target system.
MitigationInstall updates from vendor's website.
Vulnerable software versionsVisual Studio: 15.9 - 17.4.4 17.4.33213.308
Microsoft .NET Framework: 3.5 - 4.8.1
Microsoft .NET Core: 6.0.0 - 7.0.2
External linkshttp://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2023-21808
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
