What’s Vulnerable › Vulnerabilities

CVE-2021-3485: Improper Input Validation in Bitdefender Endpoint Security Tools for Linux

• Severity: medium (CVSS 6.6 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.9% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2021-05-24 · updated 2026-06-17
• Weakness: CWE-494

Description

An Improper Input Validation vulnerability in the Product Update feature of Bitdefender Endpoint Security Tools for Linux allows a man-in-the-middle attacker to abuse the DownloadFile function of the Product Update to achieve remote code execution. This issue affects: Bitdefender Endpoint Security Tools for Linux versions prior to 6.2.21.155.

Affected products

• Bitdefender Endpoint Security Tools: before 6.2.21.155 — fixed in 6.2.21.155

How to fix

Upgrade to a fixed version: Bitdefender Endpoint Security Tools 6.2.21.155. Check the vendor advisory for mitigations.

References

• https://herolab.usd.de/security-advisories/usd-2021-0014/
• https://www.bitdefender.com/support/security-advisories/improper-input-validation-in-bitdefender-endpoint-security-tools-for-linux-va-9769
• https://herolab.usd.de/security-advisories/usd-2021-0014/
• https://www.bitdefender.com/support/security-advisories/improper-input-validation-in-bitdefender-endpoint-security-tools-for-linux-va-9769

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