CVE-2024-3862

low-risk

Published 2024-04-16

The MarkStack assignment operator, part of the JavaScript engine, could access uninitialized memory if it were used in a self-assignment. This vulnerability affects Firefox < 125.

Do I need to act?

0.14% 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 5.3/10 Medium

NETWORK / HIGH complexity

Affected Products (1)

Firefox

Affected Vendors

Mozilla

References (4)

Issue Tracking https://bugzilla.mozilla.org/show_bug.cgi?id=1884457

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

Issue Tracking https://bugzilla.mozilla.org/show_bug.cgi?id=1884457

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

/ 100

low-risk

Severity 17/34 · Moderate

Exploitability 1/34 · Minimal

Exposure 5/34 · Minimal