#VU75143 Security features bypass in Microsoft Malware Protection Engine and Windows Defender - CVE-2023-24934

Vulnerability identifier: #VU75143

Vulnerability risk: Medium

CVSSv4.0: 4.8 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2023-24934

CWE-ID: CWE-254

Exploitation vector: Network

Exploit availability: No

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

Vendor:

Description

The vulnerability allows a remote attacker to bypass malware detection mechanism.

The vulnerability exists due to an unspecified error in Microsoft malware protection engine. A remote attacker can trick the victim to download a malicious file that bypasses the Windows Defender detection.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

---

External links
http://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-24934

---

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.