What’s Vulnerable › Vulnerabilities

CVE-2021-3579: Incorrect Default Permissions vulnerability in bdservicehost.exe and Vulnerability.Scan.exe

• Severity: high (CVSS 7.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.7% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2021-10-28 · updated 2026-06-17
• Weakness: CWE-276

Description

Incorrect Default Permissions vulnerability in the bdservicehost.exe and Vulnerability.Scan.exe components as used in Bitdefender Endpoint Security Tools for Windows, Total Security allows a local attacker to elevate privileges to NT AUTHORITY\SYSTEM This issue affects: Bitdefender Endpoint Security Tools for Windows versions prior to 7.2.1.65. Bitdefender Total Security versions prior to 7.2.1.65.

Affected products

• Bitdefender Endpoint Security Tools: before 7.2.1.65 — fixed in 7.2.1.65
• Bitdefender Total Security: before 7.2.1.65 — fixed in 7.2.1.65

How to fix

Upgrade to a fixed version: Bitdefender Endpoint Security Tools 7.2.1.65; Bitdefender Total Security 7.2.1.65. Check the vendor advisory for mitigations.

References

• https://www.bitdefender.com/support/security-advisories/incorrect-default-permissions-vulnerability-in-bdservicehost-exe-and-vulnerability-scan-exe-va-9848/
• https://www.zerodayinitiative.com/advisories/ZDI-21-1277/
• https://www.bitdefender.com/support/security-advisories/incorrect-default-permissions-vulnerability-in-bdservicehost-exe-and-vulnerability-scan-exe-va-9848/
• https://www.zerodayinitiative.com/advisories/ZDI-21-1277/

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