CVE-2024-31392Public exploitNetwork attack vector

Security-indicator spoofing via stale mixed-content state

Published Apr 3, 2024 · Updated Oct 30, 2024

UI spoofing in Mozilla Firefox for iOS before 124 allows remote attackers to make mixed-content pages appear secure. The URL-bar indicator does not monitor webView.hasOnlySecureContent for state changes after delayed HTTP images or forms load. A user must open an attacker-controlled HTTPS page and rely on the stale main icon; the detailed security panel still identifies the page as insecure.

CVSS severity8.2
High
EPSS probability0.38%
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 124 allows remote attackers to make mixed-content pages appear secure. The URL-bar indicator does not monitor webView.hasOnlySecureContent for state changes after delayed HTTP images or forms load. A user must open an attacker-controlled HTTPS page and rely on the stale main icon; the detailed security panel still identifies the page as insecure.

The record

CVE
CVE-2024-31392
Published
Apr 3, 2024
Updated
Oct 30, 2024
Vendor
Mozilla
Product
Firefox
Classifications
Unavailable
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Apr 3, 2024CVE publishedPublication date reported by the CVE source.
  2. Oct 30, 2024Record 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=0 <124

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Mozilla · Firefoxversion=0 <124
Mozilla · Firefox for iOSversion=unspecified <124

Published CVSS scores

8.2CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

No sourced classifications are available.

Public exploit references

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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