Is CVE-2026-16404 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-16404 being exploited in the wild.

How severe is CVE-2026-16404?

Informational severity, published 21 July 2026.

Which products and versions are affected?

Mozilla Firefox for Android versions prior to 153.

Is there a fix for CVE-2026-16404?

A patch was published on 2026-07-21: Fixed in Firefox 153. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

How is CVE-2026-16404 attacked?

It is attacked over the network, in a network appliance.

Am I affected by CVE-2026-16404?

Check whether you run Mozilla Firefox for Android at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

CVE-2026-16404: Mozilla Firefox for Android spoofing vulnerability

CVE-2026-16404 · Severity: info · Published 2026-07-21

A spoofing vulnerability was identified in Firefox for Android that could allow a malicious website to misrepresent information to the user. This type of flaw is typically used in phishing attacks to trick users into believing they are interacting with a legitimate site or interface. Users should update to version 153 or later to resolve this issue.

Technologies: Mozilla Firefox for Android. Vendors: Mozilla.

Quick answers

Is CVE-2026-16404 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-16404 being exploited in the wild.
How severe is CVE-2026-16404?: Informational severity, published 21 July 2026.
Which products and versions are affected?: Mozilla Firefox for Android versions prior to 153.
Is there a fix for CVE-2026-16404?: A patch was published on 2026-07-21: Fixed in Firefox 153. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2026-16404 attacked?: It is attacked over the network, in a network appliance.
Am I affected by CVE-2026-16404?: Check whether you run Mozilla Firefox for Android at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

A spoofing vulnerability exists in Firefox for Android prior to version 153. While specific technical details are restricted in the associated Bugzilla report (Bug 2020253), the flaw allows for the misrepresentation of UI elements or content, potentially facilitating phishing or social engineering attacks. The vulnerability is categorized as low impact by Mozilla. It is fixed in Firefox 153.

Affected products

Mozilla Firefox for Android versions prior to 153

Timeline

2026-07-21: advisory: Mozilla Foundation Security Advisory 2026-68 published.
2026-07-21: patched: Fixed in Firefox 153.

References

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