CVE-2024-53975Public exploitNetwork attack vector

HTTPS trust spoofing via premature icon update

Published Nov 26, 2024 · Updated Oct 28, 2025

UI spoofing in Mozilla Firefox for iOS before 133 allows remote attackers to display a false HTTPS padlock via a crafted HTTP page. The location-bar security state is updated before navigation completes and without ensuring the expected and displayed URLs match, so a stalled HTTPS navigation to a nonexistent port retains attacker-controlled HTTP content while showing the secure icon. A user must visit and interact with attacker-controlled content; the mismatch lasts during the stalled navigation and misrepresents that page as secure.

CVSS severityUnavailable
Unscored
EPSS probability0.29%
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 133 allows remote attackers to display a false HTTPS padlock via a crafted HTTP page. The location-bar security state is updated before navigation completes and without ensuring the expected and displayed URLs match, so a stalled HTTPS navigation to a nonexistent port retains attacker-controlled HTTP content while showing the secure icon. A user must visit and interact with attacker-controlled content; the mismatch lasts during the stalled navigation and misrepresents that page as secure.

The record

CVE
CVE-2024-53975
Published
Nov 26, 2024
Updated
Oct 28, 2025
Vendor
Mozilla
Product
Firefox for iOS
Classifications
Unavailable
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Nov 26, 2024CVE publishedPublication date reported by the CVE source.
  2. Oct 28, 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?

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  1. Affected versionversion=unspecified <133

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Mozilla · Firefox for iOSversion=unspecified <133

Published CVSS scores

No CVSS assessment is available in this record.

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 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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