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CVE-2021-45036

25
FAUCET Score

CVE-2021-45036 describes a vulnerability in Velneo vClient version 28.1.3 that allows an attacker to impersonate a legitimate user on the server if they possess the victim's username and hashed password. This high-severity vulnerability (CVSS 7.4) has a network attack vector and high impact on confidentiality and integrity, but requires high attack complexity. There is currently no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
28.1.3CPE matchmatch criteria
cpe:2.3:a:velneo:vclient:28.1.3:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

8.7HIGH

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

Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
NONE
Exploitability Score
2.2
Impact Score
5.8
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.70%
Probability of exploitation in next 30 days
EPSS Percentile
49.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0070 is in the 19th percentile among its peer group of 8,918 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

doc.velneo.com / v/32/velneo/funcionalidades-comunes/conexion-con-velneo-vserver
Vendor Advisory
doc.velneo.com / v/32/velneo/notas-de-la-version
Vendor Advisory
doc.velneo.com / v/32/velneo/notas-de-la-version
Release NotesVendor Advisory
doc.velneo.com / v/32/velneo-vserver/funcionalidades/protocolo-vatps
Vendor Advisory
velneo.es / mivelneo/listado-de-cambios-velneo-32
Release NotesVendor Advisory
incibe.es / en/incibe-cert/notices/aviso/velneo-vclient-improper-authentication-0
velneo.com / blog/disponible-la-nueva-version-velneo-32
Release NotesVendor Advisory