Mozilla Firefox Security Update (mfsa_2021-10_2021-12) - Windows

The host is installed with Mozilla Firefox and is prone to multiple vulnerabilities.

Multiple flaws exist due to, - Texture upload into an unbound backing buffer resulted in an out-of-bound read. - Internal network hosts could have been probed by a malicious webpage. - Transitions for invalid ::marker properties resulted in memory corruption. - Malicious extensions could have spoofed popup information. - Devtools remote debugging feature could have been enabled without indication to the user. - A malicious extension could have performed credential-less same origin policy violations. - Memory safety bugs.

Mozilla Firefox version before 87 on Windows.

Checks if a vulnerable version is present on the target host.

Upgrade to Mozilla Firefox version 87 or later. Please see the references for more information.