CVE-2021-38506
Through a series of navigations, Firefox could have entered fullscreen mode without notification or warning to the user. This could lead to spoofing attacks on the browser UI including phishing. This vulnerability affects Firefox < 94, Thunderbird < 91.3, and Firefox ESR < 91.3.
- Affected products
- Alt Linux, Almalinux, Astra Linux, Centos, Firefox, Firefox Esr, Linuxmint, Red Hat
- Mozilla Firefox
- < 94.0
- Mozilla Firefox Esr
- < 91.3.0
- Mozilla Thunderbird
- < 91.3.0
- Fix
- Available
- CVSS 3.1
- 4.3 MEDIUM
- EPSS
- 1.5% (71th percentile)
- Weakness
- CWE-1021
- NVD status
- Modified
- Published
- 2021-12-08
CVE-2021-38506 at NVD
No indexed exploits for CVE-2021-38506 yet
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No exploit for CVE-2021-38506 has been indexed yet. Our index is built from live traffic and upstream syncs, so this page can only say what it knows — not that no exploit exists.