#VU53630 Security features bypass in Microsoft Edge - CVE-2021-31937

Vulnerability identifier: #VU53630

Vulnerability risk: Medium

CVSSv4.0: 4.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2021-31937

CWE-ID: CWE-254

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Microsoft Edge
Client/Desktop applications / Web browsers

Vendor: Microsoft

Description

The vulnerability allows a remote attacker to bypass implemented security restrictions.

The vulnerability exists due to unspecified vulnerability in Microsoft Edge. A remote attacker can trick the victim to visit a specially crafted website and gain access to sensitive information or modify data.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Microsoft Edge: 79.0.309.71, 83.0.478.37, 84.0.522.40, 86.0.622.43 - 86.0.622.69, 87.0.664.41 - 87.0.664.75, 88.0.705.50 - 88.0.705.81, 89.0.774.45 - 89.0.774.77, 90.0.818.39 - 90.0.818.66

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External links
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-31937

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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.