CVE-2025-3927
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 · uneditedDigigram's PYKO-OUT audio-over-IP (AoIP) web-server does not require a password by default, allowing any attacker with the target IP address to connect and compromise the device, potentially pivoting to connected network or hardware devices.
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 · high confidenceThe PYKO-OUT AoIP device ships with a web server that has no password authentication configured by default. An attacker with network access to the device's IP address can access the administrative web interface without credentials, potentially gaining full control of the device and using it as a pivot point to attack other devices on the network.
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 dataall versionsCVSS 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
- Network
- Complexity
- Low
- Privileges
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
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 checksWork through these to decide whether this CVE applies to you.
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Identify the device on your networkAccess your network device list or use network scanning (e.g., nmap, Angry IP Scanner) to identify devices with open HTTP/HTTPS ports. Look for devices identifiable as 'Digigram', 'Pyko', or 'PYKO-OUT' in MAC vendor OUI, HTTP headers, or web interface favicon/title.Affected if The device is a Digigram PYKO-OUT audio-over-IP device and the web management interface is present.
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Verify web interface accessibility without credentialsOpen a web browser and navigate to the device's IP address (e.g., http://<device-ip>). Attempt to access the management interface without entering any username or password.Affected if The management interface loads and displays full functionality without prompting for any credentials.
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Check for authentication enforcement on protected pagesTry accessing specific management or configuration pages within the web interface (e.g., /admin, /settings, /config). Observe whether any authentication prompt appears or if access is granted directly.Affected if Protected configuration pages are accessible without any login prompt.
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Inspect HTTP response headers for authentication indicatorsUse a tool like curl or browser developer tools to send a request to the device (curl -I http://<device-ip>) and examine the response headers for authentication-related headers (e.g., WWW-Authenticate, 401 status codes).Affected if No WWW-Authenticate header is present and the response returns 200 OK without requiring authentication.
If the Digigram PYKO-OUT web management interface is accessible without any username or password prompt, the device is affected by CVE-2025-3927.
Generated from the published advisory. Verify against your own configuration.
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.
From vendor dataImmediately enable password authentication on the PYKO-OUT web interface and restrict network access to the management interface using firewall rules or network segmentation to prevent unauthorized access.
- Consultation2.0 h
- Implementation2.0 h
- Testing2.0 h
- Review / QA1.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2025-3927 — or any other known-vulnerable package — straight from your lock files. Free and open source; it runs locally and uploads nothing.
References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.
Primary sourcesPractitioner notes
ContributedPeer-ranked notes from engineers who’ve handled CVE-2025-3927 in production — separate from our analysis above.
The advisory tells you what broke. It rarely tells you what actually worked. If you’ve dealt with this one, that detail is what the next engineer is searching for.
- The version that genuinely resolved it — not the one the vendor claimed
- A config change or rule that shut the vector down
- A gotcha in the upgrade path that cost you an afternoon
No notes yet
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- 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
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