How severe is CVE-2024-8399?

CVE-2024-8399 has a CVSS 3.x base score of 4.7, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is none, integrity low, and availability none.

Is CVE-2024-8399 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (17th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2024-8399?

CVE-2024-8399 affects Mozilla Firefox Focus. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2024-8399?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2024-8399 have an EU (EUVD) identifier?

Yes. CVE-2024-8399 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-49149.

When was CVE-2024-8399 published?

CVE-2024-8399 was published on 2024-09-03 and last updated on 2026-06-17.

CVE-2024-8399

CVE-2024-8399 is a medium-severity vulnerability in Mozilla Firefox Focus with a CVSS 3.x base score of 4.7. 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-290.

Key facts

Severity: Medium (CVSS 3.x base score 4.7)
EPSS exploit prediction: 0% (17th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2024-49149
Weakness: CWE-290
Affected product: Mozilla Firefox Focus
Published: 2024-09-03
Last modified: 2026-06-17

Description

Websites could utilize Javascript links to spoof URL addresses in the Focus navigation bar This vulnerability affects Focus for iOS < 130.

Frequently asked questions

What is CVE-2024-8399?: Websites could utilize Javascript links to spoof URL addresses in the Focus navigation bar This vulnerability affects Focus for iOS < 130.
How severe is CVE-2024-8399?: CVE-2024-8399 has a CVSS 3.x base score of 4.7, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is none, integrity low, and availability none.
Is CVE-2024-8399 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (17th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2024-8399?: CVE-2024-8399 affects Mozilla Firefox Focus. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2024-8399?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2024-8399 have an EU (EUVD) identifier?: Yes. CVE-2024-8399 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-49149.
When was CVE-2024-8399 published?: CVE-2024-8399 was published on 2024-09-03 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:mozilla:firefox_focus:*:*:*:*:*:iphone_os:*:*

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