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Vulnerability record · CVE-2021-3579 · published 28 October 2021

CVE-2021-3579: Bitdefender endpoint security tools incorrect default permissions vulnerability

Bitdefender · Endpoint Security Tools

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.

7.8 CVSS 3.1 High EPSS 0.69% · top 46.5% CWE-276 · Incorrect default permissions
7.8CVSS 3.1 base score, v2 4.6
0.69%EPSS exploitation probability, 30 days
NoNot in CISA KEV
2Affected product versions listed by NVD
4References
17 Jun 2026Last modified by NVD

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.

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected products

2 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://www.bitdefender.com/support/security-advisories/incorrect-default-permissions-vulnerability-in-bdservicehost-exe Vendor Advisory
https://www.zerodayinitiative.com/advisories/ZDI-21-1277/ Third Party AdvisoryVDB Entry
https://www.bitdefender.com/support/security-advisories/incorrect-default-permissions-vulnerability-in-bdservicehost-exe Vendor Advisory
https://www.zerodayinitiative.com/advisories/ZDI-21-1277/ Third Party AdvisoryVDB Entry

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2021-3579), CISA KEV, FIRST EPSS (scores of 2026-11-14). This page is refreshed as NVD updates the record.