CVE-2026-3873

HIGH 7.2

Legacy built-in user account

CVSS Score

7.2

EPSS Score

0.0%

EPSS Percentile

0th

Use of Hard-coded Credentials vulnerability in Avantra allows Accessing Functionality Not Properly Constrained by ACLs. This issue affects Avantra: before 25.3.0.

CWE	CWE-798
Vendor	syslink software ag
Product	avantra
Published	Mar 13, 2026
Last Updated	Mar 13, 2026

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CVSS v3 Breakdown

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

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Changed

Confidentiality

Low

Integrity

Low

Availability

None

Affected Versions

syslink software AG / Avantra

0 < 25.3.0

References

NVD ↗ CVE.org ↗ EPSS Data ↗

support.avantra.com: https://support.avantra.com/hc/en-us/articles/5352465121695-Security-Notice-Legacy-Built-In-User-Account-rtm

Credits

Vicxer Inc.