CVE-2024-3853

low-risk

Published 2024-04-16

A use-after-free could result if a JavaScript realm was in the process of being initialized when a garbage collection started. This vulnerability affects Firefox < 125.

Do I need to act?

0.09% chance of exploitation

EPSS score — low exploit probability

Not on CISA KEV list

No confirmed active exploitation reported to CISA

Patch status unknown

Check vendor advisories for fix availability and mitigation guidance

CVSS 7.5/10 High

ADJACENT_NETWORK / HIGH complexity

Affected Products (1)

Firefox

Affected Vendors

Mozilla

References (4)

Issue Tracking https://bugzilla.mozilla.org/show_bug.cgi?id=1884427

Vendor Advisory https://www.mozilla.org/security/advisories/mfsa2024-18/

Issue Tracking https://bugzilla.mozilla.org/show_bug.cgi?id=1884427

Vendor Advisory https://www.mozilla.org/security/advisories/mfsa2024-18/

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low-risk

Severity 20/34 · Moderate

Exploitability 0/34 · Minimal

Exposure 5/34 · Minimal