CVE-2021-4199: Bitdefender Antivirus Plus

High severity, CVSS 7.8. EPSS: 0.8% chance of exploitation in the next 30 days.

Incorrect Permission Assignment for Critical Resource vulnerability in the crash handling component BDReinit.exe as used in Bitdefender Total Security, Internet Security, Antivirus Plus, Endpoint Security Tools for Windows allows a remote attacker to escalate local privileges to SYSTEM. This issue affects: Bitdefender Total Security versions prior to 26.0.10.45. Bitdefender Internet Security versions prior to 26.0.10.45. Bitdefender Antivirus Plus versions prior to 26.0.10.45. Bitdefender Endpoint Security Tools for Windows versions prior to 7.4.3.146.

Affected products

• Bitdefender Antivirus Plus: before 26.0.3.29 (fixed in 26.0.3.29)
• Bitdefender Endpoint Security Tools: before 7.4.3.146 (fixed in 7.4.3.146)
• Bitdefender Internet Security: before 26.0.3.29 (fixed in 26.0.3.29)
• Bitdefender Total Security: before 26.0.3.29 (fixed in 26.0.3.29)

Published 2022-03-07. Last modified 2026-06-17.