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NVD description
Heap buffer out-of-bounds read vulnerability in Avast Antivirus when scanning a malformed Mach-O file may allow Local Execution of Code or Denial-of-Service of the antivirus process. This issue affects Avast Antivirus, AVG Antivirus, Norton Antivirus, Avast One, and Avast Business Antivirus on Windows, macOS, and Linux for virus definition builds before VPS 25090300. The affected scanning logic is delivered through a shared Gen Digital virus definition update stream. The same stream feeds the consumer antivirus products listed in this advisory and other Gen Digital products that embed the same engine. Mitigation flows through this update channel; installations at or above the listed build are not vulnerable regardless of which product consumes the stream.
Priority
LOW
Exploitation
NONE
PoC
NONE
Patch
AVAILABLE
Momentum
NONE
🚨 HIGH: CVE-2025-10101 (CVSS 7.8) - Heap buffer overflow in Avast/AVG/Norton Antivirus when scanning malformed Mach-O files. Local code execution or DoS possible. Update to VPS 25090300+ immediately. #CVE #Vulnerability #PatchNow #ThreatIntel https://t.co/yGnWtS4YrA
Post summary
The tweet reports a high‑severity heap buffer overflow in Avast/AVG/Norton antivirus products and urges users to apply update VPS 25090300+.