CVE-2024-0605Public exploitNetwork attack vector

Cross-origin script execution via timed javascript URI

Published Jan 22, 2024 · Updated Jun 20, 2025

Cross-origin scripting in Mozilla Firefox Focus before 122 allows remote attackers to execute scripts in a loaded top-origin page. Focus reuses its single browser window so a timed window.open call can replace the trusted page with a javascript: URI that executes under that page's origin. Exploitation requires the user to open the malicious page and activate its crafted content; the script can read or alter data available to that trusted origin.

CVSS severity7.5
High
EPSS probability0.39%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Cross-origin scripting in Mozilla Firefox Focus before 122 allows remote attackers to execute scripts in a loaded top-origin page. Focus reuses its single browser window so a timed window.open call can replace the trusted page with a javascript: URI that executes under that page's origin. Exploitation requires the user to open the malicious page and activate its crafted content; the script can read or alter data available to that trusted origin.

The record

CVE
CVE-2024-0605
Published
Jan 22, 2024
Updated
Jun 20, 2025
Vendor
Mozilla
Product
Firefox Focus
Classifications
CWE-362, T1189
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jan 22, 2024CVE publishedPublication date reported by the CVE source.
  2. Jun 20, 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 <122

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Mozilla · Firefox Focusversion=unspecified <122

Published CVSS scores

7.5CISA-ADPCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
7.5NIST NVDCVSS:3.1/AV:N/AC:H/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-362Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
T1189Drive-by Compromise

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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