CVE-2025-8041Public exploitNetwork attack vector

Origin spoofing via end-truncated address-bar URLs

Published Aug 19, 2025 · Updated Apr 13, 2026

URL spoofing in Firefox for Android before 141 allows remote attackers to misrepresent a page's origin with a crafted long URL. The address bar truncates URLs from the end rather than preserving the hostname, allowing a long prefix to push the true origin out of view. The flaw affects the Android address bar only; it provides visual origin spoofing rather than direct data access or code execution.

CVSS severity5.3
Medium
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

URL spoofing in Firefox for Android before 141 allows remote attackers to misrepresent a page's origin with a crafted long URL. The address bar truncates URLs from the end rather than preserving the hostname, allowing a long prefix to push the true origin out of view. The flaw affects the Android address bar only; it provides visual origin spoofing rather than direct data access or code execution.

The record

CVE
CVE-2025-8041
Published
Aug 19, 2025
Updated
Apr 13, 2026
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-451, T1655
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 19, 2025CVE publishedPublication date reported by the CVE source.
  2. Apr 13, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

5.3CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/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-451User Interface (UI) Misrepresentation of Critical Information
T1655Masquerading

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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