Is CVE-2026-16362 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-16362 being exploited in the wild.

How severe is CVE-2026-16362?

Informational severity, with a CVSS score of 8.8, published 21 July 2026.

Which products and versions are affected?

Mozilla Firefox < 153; Mozilla Firefox ESR < 140.13.

Is there a fix for CVE-2026-16362?

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

How is CVE-2026-16362 attacked?

It is attacked over the network, in a web application.

Am I affected by CVE-2026-16362?

Check whether you run Mozilla Firefox or Mozilla Firefox ESR 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-2026-16362: Mozilla Firefox use-after-free in WebRTC Audio/Video component

Q: Which products and versions are affected?

Mozilla Firefox < 153; Mozilla Firefox ESR < 140.13.

Q: Is there a fix for CVE-2026-16362?

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

Q: How is CVE-2026-16362 attacked?

It is attacked over the network, in a web application.

Q: Am I affected by CVE-2026-16362?

Check whether you run Mozilla Firefox or Mozilla Firefox ESR 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-2026-16362 · Severity: info · CVSS 8.8 · Published 2026-07-21

A security vulnerability has been identified in the WebRTC component of Mozilla Firefox, which handles real-time audio and video communication. An attacker could exploit this flaw to potentially execute unauthorized code or crash the browser when a user visits a malicious website. This could lead to the theft of sensitive information or a complete compromise of the user's browsing session.

Technologies: Mozilla Firefox, Mozilla Firefox ESR. Vendors: Mozilla.

Quick answers

Is CVE-2026-16362 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-16362 being exploited in the wild.
How severe is CVE-2026-16362?: Informational severity, with a CVSS score of 8.8, published 21 July 2026.
Which products and versions are affected?: Mozilla Firefox < 153; Mozilla Firefox ESR < 140.13.
Is there a fix for CVE-2026-16362?: A patch was published on 2026-07-21. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2026-16362 attacked?: It is attacked over the network, in a web application.
Am I affected by CVE-2026-16362?: Check whether you run Mozilla Firefox or Mozilla Firefox ESR 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 use-after-free vulnerability exists in the WebRTC: Audio/Video component of Mozilla Firefox. The flaw occurs when the browser attempts to access memory that has already been deallocated during the processing of audio or video streams. An attacker can exploit this by enticing a user to visit a specially crafted webpage, triggering the memory corruption. This can result in a stable browser crash (Denial of Service) or potentially arbitrary code execution within the context of the browser process. The vulnerability is addressed in Firefox 153 and Firefox ESR 140.13.

Affected products

Mozilla Firefox < 153
Mozilla Firefox ESR < 140.13

Timeline

2026-07-21: disclosed
2026-07-21: patched

References

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