Vulnerability · Published Mar 13, 2026 · Assigned by NCSC.ch
CVE-2026-3873Legacy built-in user account
High 7.2
In plain English
A high-severity hard-coded credentials in Avantra from syslink software AG. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 13% of all known vulnerabilities).
Severity (CVSS 3.1)7.2High
Exploit odds (30 days)0.2%top 87.4% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
Use of Hard-coded Credentials vulnerability in Avantra allows Accessing Functionality Not Properly Constrained by ACLs. This issue affects Avantra: before 25.3.0.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| syslink software AG | Avantra | 0 – before 25.3.0 |
Weakness: CWE-798 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N