CVE-2025-41719Network attack vector

Administrator takeover via malformed user-storage input

Published Oct 22, 2025 · Updated Oct 22, 2025

Improper input validation in SAUTER modulo 5 and modulo 6 device webservers allows remote authenticated users to reset administrator access. The webserver user-management path accepts unsupported character sequences into its user store, corrupting the stored account data. Low-privileged access is required; successful corruption deletes every configured user and recreates the default Administrator with its known default password.

CVSS severity8.8
High
EPSS probability0.51%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Improper input validation in SAUTER modulo 5 and modulo 6 device webservers allows remote authenticated users to reset administrator access. The webserver user-management path accepts unsupported character sequences into its user store, corrupting the stored account data. Low-privileged access is required; successful corruption deletes every configured user and recreates the default Administrator with its known default password.

The record

CVE
CVE-2025-41719
Published
Oct 22, 2025
Updated
Oct 22, 2025
Vendor
Fr. Sauter AG
Product
SAUTER modu680-AS
Classifications
CWE-1286, T1098, T1531
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Oct 22, 2025CVE publishedPublication date reported by the CVE source.
  2. Oct 22, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

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

  1. Affected versionversion=0.0.0 <Firmware v3.2.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Fr. Sauter AG · SAUTER modu680-ASversion=0.0.0 <Firmware v3.2.0
Fr. Sauter AG · SAUTER modu524version=0.0 <Firmware v6.0
Fr. Sauter AG · SAUTER modu612-LCversion=0.0.0 <Firmware v3.2.0
Fr. Sauter AG · SAUTER modu660-ASversion=0.0.0 <Firmware v3.2.0
Fr. Sauter AG · SAUTER modu525version=0.0 <Firmware v6.0
Fr. Sauter AG · SAUTER ecos504/505version=0.0 <Firmware v6.0

Published CVSS scores

8.8CERT@VDECVSS:3.1/AV:N/AC:L/PR:L/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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-1286Improper Validation of Syntactic Correctness of Input
T1098Account Manipulation
T1531Account Access Removal

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

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo