CVE-2025-8042CWE-732

CVE-2025-8042

Critical · published August 20, 2025

CVSS v3.1
9.8
EPSS
0%
Percentile
40.0
In the wild
Unconfirmed
What it is

🚨 A sneaky iframe in Firefox for Android can trigger downloads without permission! Just like a delivery driver dropping packages at your door without a signature, this flaw is critical! 🔥 Imagine ordering a pizza, only to find the delivery guy sneaking in extra toppings you never wanted. This vulnerability allows a sandboxed iframe, lacking the `allow-downloads` attribute, to initiate downloads without your consent! An attacker could exploit this to force unwanted files onto users' devices, potentially leading to malware infections or unwanted software installations. The ramifications are absolutely devastating — one wrong click could compromise device security and user privacy!

Put simply

Imagine ordering a pizza, only to find the delivery guy sneaking in extra toppings you never wanted. This vulnerability allows a sandboxed iframe, lacking the `allow-downloads` attribute, to initiate downloads without your consent! This vulnerability in Firefox for Android allows an insecure iframe to initiate downloads without the necessary safeguards in place. By bypassing the `allow-downloads` attribute, attackers can exploit this flaw to deliver malicious content unexpectedly.

What to do

An attacker could exploit this to force unwanted files onto users' devices, potentially leading to malware infections or unwanted software installations. The ramifications are absolutely devastating — one wrong click could compromise device security and user privacy! Immediately update Firefox for Android to version 141 or later to close this critical hole. Encourage users to check their app settings and ensure that they have the latest security features enabled. Regularly reviewing permissions for apps can help bolster protection against similar issues in the future! You've got this! By taking these steps, you'll be securing your device and shielding it from unwanted attacks. 🛡️

The record
Technical detail
CVSS v3.1
9.8 · CRITICAL
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.00474 · 40.0th percentile
Weakness
CWE-732 · Incorrect Permission Assignment for Critical Resource
Published
2025-08-20T01:15Z
Affected products (1)
ProductVersionsFixed in
mozilla/firefox< 141.0141.0
References (2)
EPSS history
Timeline
  • 19 AUG 20:52Z
    Sandboxed iframe could start downloads
    cvelistv5