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CVE-2025-3500 is a local privilege escalation vulnerability in Avast Antivirus for Windows affecting versions 25.1.981.6 through versions before 25.3. The flaw is an integer overflow/wraparound condition in the aswbidsdriver kernel driver during processing of IOCTL requests. According to the provided content, the driver improperly validates user-controlled input before performing arithmetic used to calculate buffer sizes for memory allocation. A specially crafted IOCTL can trigger an integer overflow, resulting in allocation of an undersized buffer followed by subsequent operations that assume the intended size, causing heap-based kernel memory corruption and a buffer overflow. Successful exploitation can allow arbitrary code execution in kernel mode and elevation to SYSTEM privileges.
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No valid public exploits. Mallory filtered out 1 candidate as fakes, detection scripts, or README-only repos.
All candidate exploits were filtered out by Mallory's validation.
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8 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A critical integer overflow vulnerability in Avast Antivirus for Windows (versions 25.1.981.6 up to but not including 25.3) allows local privilege escalation. The flaw is rated critical (CVSS 9.0) and can be exploited remotely.
A critical local privilege escalation vulnerability in the aswbidsdriver kernel driver of Avast Antivirus for Windows caused by an integer overflow in IOCTL request handling, enabling arbitrary kernel-mode code execution and SYSTEM privileges.
A vulnerability referenced as a trending CVE affecting Avast Free Antivirus (no technical details provided in the content).
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Cross-references every affected SKU, including bundled OEM variants.
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