CVE-2024-3855

Description

In certain cases the JIT incorrectly optimized MSubstr operations, which led to out-of-bounds reads. This vulnerability affects Firefox < 125.

Category

6.5
CVSS
Severity: Medium
CVSS 3.1 •
EPSS 0.15%
Vendor Advisory mozilla.org
Affected: Mozilla Firefox
Published at:
Updated at:

References

Link Tags
https://bugzilla.mozilla.org/show_bug.cgi?id=1885828 issue tracking
https://www.mozilla.org/security/advisories/mfsa2024-18/ vendor advisory

Frequently Asked Questions

What is the severity of CVE-2024-3855?
CVE-2024-3855 has been scored as a medium severity vulnerability.
How to fix CVE-2024-3855?
To fix CVE-2024-3855, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2024-3855 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2024-3855 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2024-3855?
CVE-2024-3855 affects Mozilla Firefox.
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