CVE-2024-10004Public exploitNetwork attack vector

HTTP security spoofing via stale HTTPS padlock

Published Oct 15, 2024 · Updated Oct 16, 2024

UI spoofing in Mozilla Firefox for iOS before 131.2 allows remote attackers to misrepresent an HTTP page as secure after an external link opens. The external-navigation startup path loads the HTTP URL but leaves the location-bar security indicator showing the prior HTTPS tab's padlock state. The condition requires a force-closed app with an HTTPS tab, a user opening an external HTTP link, and an attacker positioned to intercept the HTTP traffic; the displayed destination URL remains accurate.

CVSS severity9.1
Critical
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 131.2 allows remote attackers to misrepresent an HTTP page as secure after an external link opens. The external-navigation startup path loads the HTTP URL but leaves the location-bar security indicator showing the prior HTTPS tab's padlock state. The condition requires a force-closed app with an HTTPS tab, a user opening an external HTTP link, and an attacker positioned to intercept the HTTP traffic; the displayed destination URL remains accurate.

The record

CVE
CVE-2024-10004
Published
Oct 15, 2024
Updated
Oct 16, 2024
Vendor
Mozilla
Product
Firefox
Classifications
CWE-1021, T1557
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Oct 15, 2024CVE publishedPublication date reported by the CVE source.
  2. Oct 16, 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 <131.2

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Mozilla · Firefoxversion=0 <131.2
Mozilla · Firefox for iOSversion=unspecified <131.2

Published CVSS scores

9.1CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/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.

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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 exploitPublished

Weakness, pattern, technique

CWE-1021Improper Restriction of Rendered UI Layers or Frames
T1557Adversary-in-the-Middle

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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