CVE-2021-45035

Name: CVE-2021-45035
Creator: NVD / NIST
Published: 2022-09-23T16:15:10.38+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.9/10EPSS 0.36%

Last modified Jun 17, 2026

CVE-2021-45035 is a medium-severity vulnerability rated 5.9/10 on the CVSS scale. 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.. EPSS estimates a 0.36% chance of exploitation in the next 30 days.

Description

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.

Metrics

CVSS 3.1

5.9/10

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

EPSS Probability

0.36%

27.3th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Velneo	Vclient	28.1.3

References

https://doc.velneo.com/v/29/velneo/notas-de-la-version#verificacion-de-certificadosVendor Advisory
https://velneo.es/publicacion-de-incidencia-de-seguridad-en-cve-cve-2021-45035/Vendor Advisory
https://www.incibe-cert.es/en/early-warning/security-advisories/velneo-vclient-improper-authenticationThird Party Advisory
https://www.velneo.com/blog/nueva-revision-velneo-29-2Vendor Advisory
https://doc.velneo.com/v/29/velneo/notas-de-la-version#verificacion-de-certificadosVendor Advisory
https://velneo.es/publicacion-de-incidencia-de-seguridad-en-cve-cve-2021-45035/Vendor Advisory
https://www.incibe-cert.es/en/early-warning/security-advisories/velneo-vclient-improper-authenticationThird Party Advisory
https://www.velneo.com/blog/nueva-revision-velneo-29-2Vendor Advisory

Timeline

Published: Sep 23, 2022
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-45035?

How severe is CVE-2021-45035?

CVE-2021-45035 has a CVSS score of 5.9/10 (MEDIUM severity). The EPSS model estimates a 0.36% probability of exploitation in the next 30 days.

How do I fix CVE-2021-45035?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-45035?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST