This security advisory describes one high risk vulnerability.
CVSSv3.1: 7.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C] [PCI]
Exploit availability: NoDescription
The vulnerability allows a remote attacker to compromise the affected system.
The vulnerability exists due to a race condition in Web Render components. A remote attacker can create a specially crafted web page, trick the victim into opening it and execute arbitrary code on the system.
Install updates from vendor's website.Vulnerable software versions
Mozilla Firefox: 80.0, 80.0.1, 81.0, 81.0.1, 81.0.2, 82.0, 82.0.1, 82.0.2, 82.0.3, 83.0, 84.0, 84.0.1, 84.0.2, 85.0, 85.0.1, 85.0.2, 86.0, 86.0.1, 87.0, 88.0CPE
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?
No. We are not aware of malware exploiting this vulnerability.