Vulnerability identifier: #VU73609

Vulnerability risk: Low

CVSSv3.1: 5.5 [CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2023-23389

CWE-ID: CWE-362

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
Microsoft Malware Protection Engine
Client/Desktop applications / Antivirus software/Personal firewalls

Vendor: Microsoft

Description

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

The vulnerability exists due to a race condition in Microsoft Defender. A local user can exploit the race and gain unauthorized access to sensitive information and escalate privileges on the system.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Microsoft Malware Protection Engine: All versions

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External links
http://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-23389

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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.