CVE-2024-6607Public exploitNetwork attack vector

Unintended permissions via persistent pointer lock spoofing

Published Jul 9, 2024 · Updated Oct 30, 2025

UI redressing in Mozilla Firefox and Thunderbird before 128 allows remote attackers to obtain unintended site permissions. A page can retain pointer lock after Escape and place a select element's customValidity notification over a permission prompt. Exploitation requires interactive browser-like content and user approval; ordinary Thunderbird message reading disables scripting and does not expose the path.

CVSS severity8.8
High
EPSS probability0.56%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

UI redressing in Mozilla Firefox and Thunderbird before 128 allows remote attackers to obtain unintended site permissions. A page can retain pointer lock after Escape and place a select element's customValidity notification over a permission prompt. Exploitation requires interactive browser-like content and user approval; ordinary Thunderbird message reading disables scripting and does not expose the path.

The record

CVE
CVE-2024-6607
Published
Jul 9, 2024
Updated
Oct 30, 2025
Vendor
Mozilla
Product
Firefox
Classifications
CWE-763, T1204.001
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 9, 2024CVE publishedPublication date reported by the CVE source.
  2. Oct 30, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

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

  1. Affected versionversion=0 <128
  2. Affected versionversion=unspecified <128

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Mozilla · Firefoxversion=0 <128; version=unspecified <128
Mozilla · Thunderbirdversion=0 <128; version=unspecified <128

Published CVSS scores

8.8CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

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

CWE-763Release of Invalid Pointer or Reference
T1204.001User Execution: Malicious Link

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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