How severe is CVE-2024-4764?

CVE-2024-4764 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2024-4764 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (43rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2024-4764?

CVE-2024-4764 affects Mozilla Firefox. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2024-4764?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

Does CVE-2024-4764 have an EU (EUVD) identifier?

Yes. CVE-2024-4764 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-44360.

When was CVE-2024-4764 published?

CVE-2024-4764 was published on 2024-05-14 and last updated on 2026-06-17.

CVE-2024-4764

CVE-2024-4764 is a critical-severity vulnerability in Mozilla Firefox with a CVSS 3.x base score of 9.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-416.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
EPSS exploit prediction: 1% (43rd percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2024-44360
Weakness: CWE-416
Affected product: Mozilla Firefox
Published: 2024-05-14
Last modified: 2026-06-17

Description

Multiple WebRTC threads could have claimed a newly connected audio input leading to use-after-free. This vulnerability affects Firefox < 126.

Frequently asked questions

What is CVE-2024-4764?: Multiple WebRTC threads could have claimed a newly connected audio input leading to use-after-free. This vulnerability affects Firefox < 126.
How severe is CVE-2024-4764?: CVE-2024-4764 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2024-4764 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (43rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2024-4764?: CVE-2024-4764 affects Mozilla Firefox. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2024-4764?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
Does CVE-2024-4764 have an EU (EUVD) identifier?: Yes. CVE-2024-4764 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-44360.
When was CVE-2024-4764 published?: CVE-2024-4764 was published on 2024-05-14 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:mozilla:firefox:*:*:*:*:-:*:*:*

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