CVE-2025-41730Network attack vector

Unauthenticated code execution via check_account stack overflow

Published Dec 10, 2025 · Updated Dec 10, 2025

Stack-based buffer overflow in WAGO Industrial Managed Switches before 02.64 allows remote attackers to execute code without authentication. The lighttpd check_account() parser passes attacker-controlled HTTP fields to unsafe sscanf calls that write beyond fixed-size stack buffers. No account or user interaction is required; successful corruption enables arbitrary code execution, while failed attempts can disable the web interface until manual recovery.

CVSS severity9.8
Critical
EPSS probability0.43%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stack-based buffer overflow in WAGO Industrial Managed Switches before 02.64 allows remote attackers to execute code without authentication. The lighttpd check_account() parser passes attacker-controlled HTTP fields to unsafe sscanf calls that write beyond fixed-size stack buffers. No account or user interaction is required; successful corruption enables arbitrary code execution, while failed attempts can disable the web interface until manual recovery.

The record

CVE
CVE-2025-41730
Published
Dec 10, 2025
Updated
Dec 10, 2025
Vendor
WAGO
Product
Industrial Managed Switches
Classifications
CWE-787, CWE-121, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Dec 10, 2025CVE publishedPublication date reported by the CVE source.
  2. Dec 10, 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=0.0.0 <02.64

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

WAGO · Industrial Managed Switchesversion=0.0.0 <02.64

Published CVSS scores

9.8CERT@VDECVSS: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.

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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-787Out-of-bounds Write
CWE-121Stack-based Buffer Overflow
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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