dbcve.org
AvantraApplication

CVE-2026-8672

MEDIUM · 5.1 CVSS v3.1 Published 2026-05-22
Fix available
A fix is available. Upgrade to 25.3.0 or later.
See remediation →
53/100
Remediation priority · Moderate
Zero-click

Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.

NVD · unedited
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.

Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.

dbcve analysis · moderate confidence

Avantra monitoring software ships with default credentials that allow unauthorized access to the management interface. An attacker with network access can exploit this by attempting common or default username/password combinations to authenticate to the system.

MitigationImmediately change all default passwords to strong, unique credentials and upgrade to version 25.3.0 or later. Restrict network access to the management interface to trusted IPs.

Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.

Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.

NVD · CPE data
AvantraApplication
Affected:< 25.3.0

CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.

From the vector
Attack vector
Local
Complexity
Low
Privileges
High
User interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
Low
Availability
None

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

Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.

dbcve checks

Work through these to decide whether this CVE applies to you.

  1. Identify Avantra installation
    Locate Avantra installation directories or check installed programs on Linux (e.g., /opt/avantra, /usr/local/avantra) or Windows (Program Files, ProgramData). Use commands like 'find / -name "avantra*" -type d 2>/dev/null' on Linux or check Add/Remove Programs on Windows.
    Affected if Avantra software is found on the system
  2. Check installed Avantra version
    Locate the version file or executable (commonly found in the installation directory, bin folder, or via 'avantra --version' or 'avantra -v' command). Also check any about dialog, version info in control panels, or config/version files in the installation directory.
    Affected if The installed version is 25.2.x or earlier (any version below 25.3.0)
  3. Identify default credentials in use
    Review Avantra configuration files, property files, or database connections for hardcoded credentials. Check installation documentation for any mentioned default usernames/passwords. Inspect configuration files in the conf or config directory of the installation path.
    Affected if Default credentials (commonly admin/admin, admin/avantra, or similar) are found or still active in configuration files
  4. Check for default accounts
    Review the list of user accounts configured in Avantra (via admin console, database, or user configuration files). Look for accounts with common default usernames such as admin, administrator, system, or setup accounts.
    Affected if Default or pre-configured accounts exist with default or weak passwords that have not been changed

A user is affected if Avantra version is below 25.3.0 and the system either uses or has not changed default credentials from what was shipped with the software.

Generated from the published advisory. Verify against your own configuration.

Check your environment

Paste your version and any relevant configuration and it will be compared against the affected criteria above. Do not include secrets or credentials.

AI-assisted, checked against the advisory. Informational, not a guarantee.

Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.

dbcve · scoped
Upgrade available Upgrade to 25.3.0 or later
Fixed in 25.3.0
Interim mitigation

Immediately change all default passwords to strong, unique credentials and upgrade to version 25.3.0 or later. Restrict network access to the management interface to trusted IPs.

Recommended fix Moderate confidence

Avantra 25.3.0

  1. Upgrade Avantra to version 25.3.0 or later by obtaining the update from support.avantra.com
  2. After upgrading, change all default usernames and passwords to strong, unique credentials
  3. Verify that the default credentials no longer work by attempting to authenticate with the default password
  4. Consult Avantra upgrade documentation for any pre-upgrade backup or compatibility requirements
Caveat Review Avantra upgrade documentation for any compatibility or migration requirements before upgrading

Generated from the published advisory — verify against the referenced sources before acting.

Fix this in Avantra Scoped from the published advisory
  • Consultation2.0 h
  • Implementation4.0 h
  • Testing2.0 h
  • Review / QA1.0 h
9.0 hours of engineering $1,600
Get the upgrade done

An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $2,560.

Scan for this in your stack

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References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.

Primary sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2026-8672 in production — separate from our analysis above.

No notes yet

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What this is

A place for practitioners to share what actually worked: a mitigation you’ve tested, a configuration change, a version- or environment-specific caveat, or a link to a verified patch. The most useful notes rise to the top as peers upvote them, so the signal stays high.

What belongs here
  • Verified mitigations, workarounds, and config changes
  • Version or environment caveats, and links to real fixes
  • No weaponised exploit code, or anything meant to cause harm
  • No spam, self-promotion, credentials, or personal data