Remote code execution in Microsoft Scripting Engine



Risk Low
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2021-26419
CWE-ID CWE-119
Exploitation vector Network
Public exploit N/A
Vulnerable software
 Microsoft Internet Explorer
Client/Desktop applications / Web browsers

Windows
Operating systems & Components / Operating system

Vendor Microsoft

Security Bulletin

This security bulletin contains one low risk vulnerability.

1) Buffer overflow

EUVDB-ID: #VU53114

Risk: Low

CVSSv3.1: 5.6 [CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-26419

CWE-ID: CWE-119 - Memory corruption

Exploit availability: No

Description

The vulnerability allows a remote user to execute arbitrary code on the target system.

The vulnerability exists due to a boundary error in Scripting Engine. A remote administrator can trick a victim to visit a malicious website, trigger memory corruption and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Microsoft Internet Explorer: 9 - 11

Windows: 10 20H2 10.0.19042.572

CPE2.3 External links

http://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-26419


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated privileged user via the Internet.

How the attacker can exploit this vulnerability?

The attacker would have to trick the victim to visit a specially crafted website.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.



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