Heap Buffer Overflow in Firefox for Android Affects Mozilla Products

CVE-2026-3845

What is CVE-2026-3845?

CVE-2026-3845 is a critical vulnerability identified in the Firefox web browser for Android, specifically affecting versions prior to 148.0.2. This flaw manifests as a heap buffer overflow in the Audio/Video Playback component, posing a significant risk to users. Heap buffer overflows can lead to corrupting the memory of the application, potentially allowing attackers to manipulate program behavior. Such vulnerabilities could serve as entry points for various types of attacks, including remote code execution, which can seriously compromise user data and privacy. Given that Firefox is widely used for accessing web resources, this vulnerability could negatively impact organizational security and user trust, leading to potential data breaches or unauthorized access to sensitive information.

Potential impact of CVE-2026-3845

1. Unauthorized Remote Code Execution: The heap buffer overflow can enable attackers to execute arbitrary code on affected devices. This can result in malware installation, data theft, or further compromise of the device's operating system.

2. Data Breach Risks: Exploiting this vulnerability can give attackers access to sensitive user data, jeopardizing both individual and organizational privacy. This breach could lead to significant financial loss and reputational damage.

3. Widespread Exploitation Potential: Although there are currently no reports of exploitation in the wild, the nature of the vulnerability suggests that it could be targeted by threat actors, including ransomware groups. The existence of this flaw could lead to increasing interest and attempts to exploit it, especially as it becomes publicly known.

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