A local privilege escalation vulnerability in Bitdefender Total Security versions prior to 27.0.47.241 allows low-privileged attackers to elevate privileges. The issue arises from bdservicehost.exe deleting files from a user-writable directory (C:\ProgramData\Atc\Feedback) without proper symbolic link validation, enabling arbitrary file deletion. This issue is chained with a file copy operation during network events and a filter driver bypass via DLL injection to achieve arbitrary file copy and code execution as elevated user.
Fix
Patch, vendor advisory and mitigation references on NVD 1
- https://www.bitdefender.com/support/security-advisories/local-privilege-escalation-via-arbitrary-file-operation-in-bitdefender-atc-va-12590 Vendor Advisory
Every line above is quoted from NVD, CISA, Microsoft, the vendor's own advisory or DISA; nothing is generated.
Change history 1
- First seenCVSS 8.8 · bitdefenderNVD modified 2026-10-14 21:10
Affected (CPE criteria) 5
cpe:2.3:a:bitdefender:antivirus:*:*:*:*:free:*:*:*cpe:2.3:a:bitdefender:antivirus_plus:*:*:*:*:*:*:*:*cpe:2.3:a:bitdefender:endpoint_security_tools:*:*:*:*:*:windows:*:*cpe:2.3:a:bitdefender:internet_security:*:*:*:*:*:*:*:*cpe:2.3:a:bitdefender:total_security:*:*:*:*:*:*:*:*