Is CVE-2026-124933 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-124933 being exploited in the wild.

How severe is CVE-2026-124933?

Informational severity, published 10 November 2026.

Which products and versions are affected?

Mozilla Firefox before 160; Mozilla Firefox ESR before 153.7.

Is there a fix for CVE-2026-124933?

Yes: fixed in Firefox 160, Firefox ESR 153.7. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

How is CVE-2026-124933 attacked?

It is attacked over the network.

Am I affected by CVE-2026-124933?

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-2026-124933: Firefox sandbox escape in Console component

CVE-2026-124933 · Severity: info · Published 2026-11-10

Firefox's developer console component contains a vulnerability that allows an attacker to escape the browser's sandbox security boundary. If exploited, an attacker could gain access to sensitive browser functionality and data that should be isolated from web content. This affects users who visit malicious websites or open untrusted content in their browser.

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

Quick answers

Is CVE-2026-124933 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-124933 being exploited in the wild.
How severe is CVE-2026-124933?: Informational severity, published 10 November 2026.
Which products and versions are affected?: Mozilla Firefox before 160; Mozilla Firefox ESR before 153.7.
Is there a fix for CVE-2026-124933?: Yes: fixed in Firefox 160, Firefox ESR 153.7. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2026-124933 attacked?: It is attacked over the network.
Am I affected by CVE-2026-124933?: 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.

How to fix

Fixed in: Firefox 160, Firefox ESR 153.7

Technical details

A sandbox escape vulnerability exists in Firefox's Console component, allowing an attacker to break out of the browser's security boundary. The vulnerability requires network access and likely user interaction (visiting a malicious site). The fix is available in Firefox 160 and Firefox ESR 153.7.

Affected products

Mozilla Firefox before 160
Mozilla Firefox ESR before 153.7

Timeline

2026-11-10: disclosed
2026-11-10: patched

References

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