CVE-2025-3927Network attack vector

Unauthenticated device control via passwordless web server

Published May 2, 2025 · Updated May 12, 2025

Missing authorization in Digigram PYKO-OUT 1.0 allows remote attackers to control the appliance through its web server. The default web-server configuration accepts administrative requests without login information or a password, exposing configuration and audio-stream controls. Network reachability to the device is sufficient; attackers can alter audio input and output behavior and use network or attached USB connections to target adjacent devices.

CVSS severity9.8
Critical
EPSS probability0.56%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Missing authorization in Digigram PYKO-OUT 1.0 allows remote attackers to control the appliance through its web server. The default web-server configuration accepts administrative requests without login information or a password, exposing configuration and audio-stream controls. Network reachability to the device is sufficient; attackers can alter audio input and output behavior and use network or attached USB connections to target adjacent devices.

The record

CVE
CVE-2025-3927
Published
May 2, 2025
Updated
May 12, 2025
Vendor
Digigram
Product
PYKO-OUT
Classifications
CWE-1391, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 2, 2025CVE publishedPublication date reported by the CVE source.
  2. May 12, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=1.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Digigram · PYKO-OUTversion=1.0

Published CVSS scores

9.8CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-1391Use of Weak Credentials
T1190Exploit Public-Facing Application

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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