CVE-2024-38313Network attack vector

Location-bar spoofing via fake website toolbar

Published Jun 13, 2024 · Updated Mar 14, 2025

UI spoofing in Mozilla Firefox for iOS before 127 allows remote attackers to misrepresent a site's address through a malicious webpage. A crafted page visually imitates the location bar with a fake toolbar, causing page content to be mistaken for trusted browser chrome. Exploitation requires a user to visit the page and trust the displayed URL; the documented consequence is address deception, not code execution or data access.

CVSS severity4.3
Medium
EPSS probability0.24%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

UI spoofing in Mozilla Firefox for iOS before 127 allows remote attackers to misrepresent a site's address through a malicious webpage. A crafted page visually imitates the location bar with a fake toolbar, causing page content to be mistaken for trusted browser chrome. Exploitation requires a user to visit the page and trust the displayed URL; the documented consequence is address deception, not code execution or data access.

The record

CVE
CVE-2024-38313
Published
Jun 13, 2024
Updated
Mar 14, 2025
Vendor
Mozilla
Product
Firefox for iOS
Classifications
CWE-451, T1036
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 13, 2024CVE publishedPublication date reported by the CVE source.
  2. Mar 14, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=unspecified <127

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Mozilla · Firefox for iOSversion=unspecified <127

Published CVSS scores

4.3CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N
4.3NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-451User Interface (UI) Misrepresentation of Critical Information
T1036Masquerading

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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