What’s Vulnerable › Vulnerabilities

CVE-2022-45407

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.7% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2022-12-22 · updated 2026-06-17
• Weakness: CWE-416

Description

If an attacker loaded a font using <code>FontFace()</code> on a background worker, a use-after-free could have occurred, leading to a potentially exploitable crash. This vulnerability affects Firefox < 107.

Affected products

• Mozilla Firefox: before 107.0 — fixed in 107.0

How to fix

Upgrade to a fixed version: Mozilla Firefox 107.0. Check the vendor advisory for mitigations.

References

• https://bugzilla.mozilla.org/show_bug.cgi?id=1793314
• https://www.mozilla.org/security/advisories/mfsa2022-47/
• https://bugzilla.mozilla.org/show_bug.cgi?id=1793314
• https://www.mozilla.org/security/advisories/mfsa2022-47/

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