CVE-2021-45035

Velneo vClient Improper authentication

6.3 Medium

Velneo vClient on its 28.1.3 version, does not correctly check the certificate of authenticity by default. This could allow an attacker that has access to the network to perform a MITM attack in order to obtain the user´s credentials.

Attack profile

How easy it is to exploit

Attack vector: Adjacent network
Complexity: Low
Privileges needed: None
User interaction: Required

What an attacker can affect

Confidentiality: High
Integrity: Low
Availability: None

Exploit likelihood

0.46%Down 0.4 points since Sep 24, 2022

What each source reports

CVE List Score used 6.3

Velneo vClient Improper authentication

Record: CVE-2021-45035
CVSS 3.1: 6.3 MediumCVSS:3.1/AV:A/AC:L/PR:N/UI:R/S:U/C:H/I:L/A:N
Weakness: CWE-287
Updated: 2026-11-02

EUVDEUVD-2021-31832 6.3

Record: EUVD-2021-31832
CVSS 3.1: 6.3 MediumCVSS:3.1/AV:A/AC:L/PR:N/UI:R/S:U/C:H/I:L/A:N
Updated: 2026-11-02

GitHub AdvisoriesGHSA-pv7f-h3w8-w3jh 5.9

Velneo vClient on its 28.1.3 version, does not correctly check the certificate of authenticity by...

Record: GHSA-pv7f-h3w8-w3jh
CVSS 3.1: 5.9 MediumCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
Weakness: CWE-287, CWE-295
Updated: 2026-11-02

NVD 6.3

Record: CVE-2021-45035
CVSS 3.1: 6.3 MediumCVSS:3.1/AV:A/AC:L/PR:N/UI:R/S:U/C:H/I:L/A:N
CVSS 3.1: 5.9 MediumCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
Weakness: CWE-287, CWE-295
Updated: 2026-11-02

Affected products

velneo vclient

History

History
Recorded	Changed	Sources
Nov 2, 2026	first indexed	CVE List, EUVD, GitHub Advisories, NVD

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2021-45035 is a medium vulnerability (CVSS 6.3) in Velneo Vclient, published September 23, 2022. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.46%, the 40th percentile. No source names a fixed version.