CVE-2024-8399

FAUCET Score

CVE-2024-8399 describes a vulnerability in Mozilla Firefox Focus for iOS versions prior to 130, where malicious websites could use JavaScript links to spoof URL addresses displayed in the Focus navigation bar. This medium-severity vulnerability (CVSS 4.7) requires user interaction (UI:R) and could lead to information integrity issues (I:L) through social engineering, but does not impact confidentiality or availability. There is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

Vendor	Product	Version(s)	CPE
		< 130.0CPE matchmatch criteria	cpe:2.3:a:mozilla:firefox_focus::::::iphone_os::*

CVSS Data

CVSS version used by this source: 3.1

4.7MEDIUM

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:L/A:N

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

CHANGED

Confidentiality Impact

NONE

Integrity Impact

LOW

Availability Impact

NONE

Exploitability Score

2.8

Impact Score

1.4

CvssVersion

3.1

Exploit Intelligence

EPSS Score

0.26%

Probability of exploitation in next 30 days

EPSS Percentile

17.2%

Percentile rank of EPSS score among Peer Group

As of 2026-07-27

Model: v2026.06.15

This CVE's current EPSS score of 0.0026 is in the 18th percentile among its peer group of 26,234 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Vendor Patches (1)

mozillavendor investigatingvia nvd_reference

View patch

References

bugzilla.mozilla.org / show_bug.cgi

Permissions Required

mozilla.org / security/advisories/mfsa2024-42

Vendor Advisory