Platform
firefox
Component
firefox
Fixed in
149.0.2
149.0.2
CVE-2026-5733 represents a vulnerability stemming from incorrect boundary conditions within the Graphics: WebGPU component of Mozilla Firefox. Exploitation of this flaw could potentially lead to unexpected application behavior or, in more severe scenarios, arbitrary code execution. The vulnerability specifically impacts versions of Firefox prior to 149.0.2. A security update addressing this issue has been released in Firefox 149.0.2.
CVE-2026-5733 in Firefox affects the Graphics: WebGPU component due to incorrect boundary conditions. This could allow a remote attacker to execute arbitrary code on the user's system, compromising the confidentiality, integrity, and availability of data. The severity of this vulnerability is significant as WebGPU is used for rendering advanced graphics on the web, and a failure in this component could be exploited to gain control of the browser and potentially the underlying operating system. While Mozilla hasn't published specific details on exploitation, the nature of the vulnerability suggests an attacker could manipulate WebGPU input to cause a buffer overflow or memory corruption. Users are strongly advised to update to Firefox version 149.0.2 to mitigate this risk.
Exploitation of CVE-2026-5733 would likely involve crafting a malicious website that utilizes WebGPU in a way that exploits the incorrect boundary conditions. When a user visits this website on a vulnerable version of Firefox, the attacker could potentially execute arbitrary code on the user's system. The complexity of exploitation will depend on the specific nature of the incorrect boundary conditions and the attacker's ability to create a malicious payload that exploits them. Mozilla is expected to publish more details about the vulnerability in the future, which could reveal more information about how it can be exploited.
Exploit Status
EPSS
0.04% (12% percentile)
The solution for CVE-2026-5733 is to update to Firefox version 149.0.2 or later. Mozilla has released this update to correct the incorrect boundary conditions in the Graphics: WebGPU component. Ensure automatic Firefox updates are enabled to proactively receive future security updates. If you cannot update immediately, consider disabling WebGPU in Firefox settings (although this may affect the functionality of some websites). Regularly monitor security news sources for information on potential exploits and workarounds. Updating is the most effective measure to protect yourself from this vulnerability.
Actualice a Firefox versión 149.0.2 o posterior para mitigar la vulnerabilidad. La actualización corrige incorrectas condiciones de límite en el componente WebGPU, previniendo posibles exploits.
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WebGPU is a modern web API for accessing the GPU, enabling high-performance graphics and compute in the browser.
Check the Firefox version in the 'Help' menu -> 'About Firefox'. It should display 149.0.2 or higher.
Yes, you can disable WebGPU in Firefox settings, but this may affect the functionality of some websites.
If you can't update, monitoring security sources and avoiding suspicious websites is a preventative measure.
Mozilla may publish more details in the future. Stay tuned to Mozilla security updates.
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