CVE-2026-8672
Avantra ≤ 25.3.0
Raw vector
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:L/A:NCVSS and EPSS are reproduced from their sources (NVD, FIRST EPSS). Risk Priority is our own derived reading, not an NVD score.
Summary
CVE-2026-8672 is a medium-severity Use of Default Password (CWE-1393) vulnerability in Avantra Avantra. Its CVSS base score is 5.1 (Medium).
Operationally, exploitation aligns with the MITRE ATT&CK technique Default Accounts (T1078.001); ranked at the 1th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.
The strongest mitigations our analysis identified map to CM-6 (Configuration Settings) and IA-5 (Authenticator Management) — see the control section below for these in your framework.
OWASP Top 10 for Web (2025)
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2026-31437
Vulnerability Data
Use of default password vulnerability in syslink software AG Avantra on Linux, Windows allows Try Common or Default Usernames and Passwords. This issue affects Avantra: before 25.3.0.
- CWE(s)
Related Threats
MITRE ATT&CK Enterprise Techniques
CVEs Like This One
Affected Assets
Mitigating Controls
Mitigating Controls (NIST 800-53 r5) AI
Authenticator management requires verification of identity at initial distribution and secure handling that directly stops default passwords from remaining in use.
Configuration settings establish the most restrictive secure baselines, which include changing or disabling default passwords.
Mitigating Controls (NIST CSF 2.0) AI
Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→CSF cross-walk (authority under review) — links open the control.
Credential management directly requires replacing default passwords with unique, strong credentials.
Hardened configuration baselines explicitly prohibit default passwords, covering most of the weakness but not all identity-management aspects.
Vulnerability scanning will discover default-password instances, enabling remediation, yet does not itself prevent their initial use.
Authentication policies can enforce non-default passwords but do not address the full scope of credential lifecycle.
Authorization policies assume credentials already exist and are not default; least-privilege helps limit impact but does not prevent defaults.
Mitigating Controls (ISO/IEC 27001:2022 Annex A) AI
Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→ISO cross-walk (authority under review) — links open the control.
Mandates secure handling and change of authentication secrets, directly addressing default passwords.
Configuration management processes typically enforce changing defaults during hardening.
Requires secure authentication mechanisms, which includes replacing or disabling default credentials.