PT-2021-5347
CVE-2021-43538
·
Published
2021-12-07
·
Updated
2026-10-31
Description by
CVSS 2.0
6.4
MediumMetricsAV:N/AC:L/Au:N/C:P/I:P/A:N
Name of the Vulnerable Software and Affected Versions
Firefox versions prior to 95
Firefox ESR versions prior to 91.4.0
Thunderbird versions prior to 91.4.0
Description
The issue is related to errors in cryptographic transformations and a race condition in notification code. This could allow a remote attacker to hide notifications for pages, potentially leading to spoofing attacks.
Recommendations
For Firefox versions prior to 95, update to version 95 or later.
For Firefox ESR versions prior to 91.4.0, update to version 91.4.0 or later.
For Thunderbird versions prior to 91.4.0, update to version 91.4.0 or later.
Exploitability
Exploit
Fix
Impacts
Vendors
Affected products
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