Summaryinfo

A vulnerability, which was classified as critical, has been found in Mozilla Firefox up to 148. This vulnerability affects unknown code of the component IPC. Performing a manipulation results in an unknown weakness. This vulnerability was named CVE-2026-4722. The attack may be initiated remotely. There is no available exploit. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability classified as critical has been found in Mozilla Firefox up to 148. This affects an unknown functionality of the component IPC. The impact remains unknown. The summary by CVE is:

Privilege escalation in the IPC component. This vulnerability affects Firefox < 149 and Thunderbird < 149.

The advisory is shared at bugzilla.mozilla.org. This vulnerability is uniquely identified as CVE-2026-4722 since 03/24/2026. The exploitability is told to be easy. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. It demands that the victim is doing some kind of user interaction. Neither technical details nor an exploit are publicly available. The price for an exploit might be around USD $5k-$25k at the moment (estimation calculated on 03/28/2026).

Upgrading to version 149 eliminates this vulnerability.

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Type

• Web Browser

Vendor

• Mozilla

Name

• Firefox

Version

• 148

License

• open-source

Website

• Vendor: https://www.mozilla.org/
• Product: https://www.mozilla.org/en-US/firefox/

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