Atila Butkovits

**Name of the Vulnerable Software and Affected Versions** Firefox versions prior to 95 **Description** The issue is related to a graphics object not being correctly protected when transitioning in and out of fullscreen mode, resulting in memory corruption and a potentially exploitable crash. This problem affects Firefox on MacOS, with other operating systems being unaffected. The vulnerability is also described as a use-after-free issue, which could allow a remote attacker to cause a denial of service. **Recommendations** For versions prior to 95, update to version 95 or later to resolve the issue. As a temporary workaround, consider avoiding the use of fullscreen mode in Firefox on MacOS until the update is applied.