Risk | Critical |
Patch available | YES |
Number of vulnerabilities | 1 |
CVE-ID | CVE-2021-30632 |
CWE-ID | CWE-787 |
Exploitation vector | Network |
Public exploit | This vulnerability is being exploited in the wild. |
Vulnerable software Subscribe |
Microsoft Edge Client/Desktop applications / Web browsers |
Vendor | Microsoft |
Security Bulletin
This security bulletin contains one critical risk vulnerability.
EUVDB-ID: #VU56482
Risk: Critical
CVSSv3.1: 8.4 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:H/RL:O/RC:C]
CVE-ID: CVE-2021-30632
CWE-ID:
CWE-787 - Out-of-bounds write
Exploit availability: Yes
DescriptionThe vulnerability allows a remote attacker to compromise vulnerable system.
The vulnerability exists due to a boundary error when processing untrusted HTML content in V8. A remote attacker can create a specially crafted web page, trick the victim into opening it, trigger out-of-bounds write and execute arbitrary code on the target system.
Note, the vulnerability is being actively exploited in-the-wild.
Install updates from Microsoft website.
Vulnerable software versionsMicrosoft Edge: 79.0.309.71 - 93.0.961.44
External linkshttp://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-30632
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker 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?
Yes. This vulnerability is being exploited in the wild.