CVE-2021-3485 json
Improper Input Validation in Bitdefender Endpoint Security Tools for Linux
published 2021-05-24 5 y ago modified 2026-06-17 4 mo ago also EUVD-2021-26807
- cvss
- 6.4
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.9%
- EPSS 0.9% chance of exploitation in 30 days, percentile 59%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
- Bitdefender Endpoint Security Tools for Linux 6.2.21.155
Exploit prediction
0.88% chance of exploitation in the next 30 days, higher than 59% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- herolab.usd.de https://herolab.usd.de/security-advisories/usd-2021-0014/ referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 6.4 | CVSS:3.1/AV:A/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H |
| NVD | 3.1 | 6.6 | CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H |
| NVD | 2.0 | 6.0 | AV:N/AC:M/Au:S/C:P/I:P/A:P |
Affected products
- Bitdefender Endpoint Security Tools for Linux
Classification
- Weakness
-
- CWE-494 Download of Code Without Integrity Check
References
-
herolab.usd.de
/security-advisories/usd-2021-0014/
exploit, third-party-advisory
-
bitdefender.com
/support/security-advisories/improper-input-validation-in-bitdefender-endpoint-security-tools-for-linux-va-976
vendor-advisory
Sources
- CVE List CVE-2021-3485
- NVD CVE-2021-3485
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