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Avantra CVE-2026-8673

| EUVD-2026-31436 MEDIUM
Unprotected Transport of Credentials (CWE-523)
2026-05-22 NCSC.ch GHSA-v88w-jgrg-7946
5.9
CVSS 3.1
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CVSS VectorNVD

CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:N
Attack Vector
Network
Attack Complexity
High
Privileges Required
High
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
None

Lifecycle Timeline

2
Patch available
May 26, 2026 - 14:16 EUVD
Analysis Generated
May 22, 2026 - 14:04 vuln.today

DescriptionNVD

Unprotected transport of credentials vulnerability in syslink software AG Avantra on Linux, Windows allows Sniffing Attacks.

This issue affects Avantra: before 25.3.0.

AnalysisAI

Unprotected credential transport in syslink software AG Avantra before version 25.3.0 exposes authentication material to network-layer interception on both Linux and Windows deployments. The vulnerability, classified under CWE-523, allows a suitably positioned network adversary to capture credentials in transit, with the CVSS vector indicating high confidentiality and integrity impact upon successful exploitation. …

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CVE-2026-8673 vulnerability details – vuln.today

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