Cybersecurity and Infrastructure Security Agency (CISA) on Monday added the two Firefox zero-day vulnerabilities, along with nine other bugs, to its Known Exploited Vulnerabilities Catalog, requiring federal agencies to apply the fixes by March 21, 2022. In light of active exploitation of the flaws, users are recommended to upgrade as soon as possible to Firefox 97.0.2, Firefox ESR 91.6.1, Firefox for Android 97.3.0, Focus 97.3.0, and Thunderbird 91.6.2. While targeted attacks leveraging zero-days in Firefox have been a relatively rare occurrence when compared to Apple Safari and Google Chrome, Mozilla previously addressed three actively exploited flaws in 2020 and one in 2019. Security researchers Wang Gang, Liu Jialei, Du Sihang, Huang Yi, and Yang Kang of Qihoo 360 ATA have been credited with discovering and reporting the shortcomings. The version is located below the browser name (Figure 2).įor Technical Assistance, contact the Technology Support Center at (309) 438-4357, by email at or by Submitting a Help Ticket.Mozilla acknowledged that 'We have had reports of attacks in the wild' weaponizing the two vulnerabilities but did not share any technical specifics related to the intrusions or the identities of the malicious actors exploiting them.

A window appears that provides information about the browser.

Click on Firefox in the upper left corner of the computer screen (next to the Apple symbol).

Firefox users may run a manual check for updates to speed up the installation of the new version: Select Menu > Help > About. If you are reading the article on May 3, it may not be available yet, depending on when you are reading the article.

To determine the version of Mozilla Firefox for Mac, do the following: Firefox 100 is distributed via the browsers built-in updating functionality and the Mozilla website. The version is located below the browser name (Figure 1). Click the 3 Horizontal Lines in the upper right-hand corner and then scroll down to and click on Help.

To determine the version of Mozilla Firefox for Windows, do the following: Firefox is available for both Windows and Mac operating systems. These instructions explain how to determine the version of the browser, Mozilla Firefox.

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