CVE-2026-3587Network attack vector

Unauthenticated root access via hidden CLI function

Published Mar 23, 2026 · Updated Mar 23, 2026

Hidden functionality in WAGO managed-switch firmware allows remote attackers to escape the restricted CLI and gain root access. An undocumented CLI prompt function exposes a path from the restricted management interface to the underlying operating-system shell without authentication. Network access to the CLI is sufficient to obtain unrestricted device control, including configuration and switching operations.

CVSS severity10.0
Critical
EPSS probability0.68%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Hidden functionality in WAGO managed-switch firmware allows remote attackers to escape the restricted CLI and gain root access. An undocumented CLI prompt function exposes a path from the restricted management interface to the underlying operating-system shell without authentication. Network access to the CLI is sufficient to obtain unrestricted device control, including configuration and switching operations.

The record

CVE
CVE-2026-3587
Published
Mar 23, 2026
Updated
Mar 23, 2026
Vendor
WAGO
Product
Industrial Managed Switch 852-1305/000-001
Classifications
CWE-912, T1059.004, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Mar 23, 2026CVE publishedPublication date reported by the CVE source.
  2. Mar 23, 2026Record 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 <V1.2.0.S0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

WAGO · Industrial Managed Switch 852-1305/000-001version=0.0.0 <V1.2.0.S0
WAGO · Lean Managed Switch 852-1813/010-000version=0.0.0 <V1.2.1.S0
WAGO · Lean Managed Switch 852-1813version=0.0.0 <V1.2.1.S0
WAGO · Lean Managed Switch 852-1812version=0.0.0 <V1.2.1.S0
WAGO · Industrial Managed Switch 852-1305version=0.0.0 <V1.2.0.S0
WAGO · Industrial Managed Switch 852-1505version=0.0.0 <V1.1.9.S0
WAGO · Industrial Managed Switch 852-1505/000-001version=0.0.0 <V1.2.0.S0
WAGO · Lean Managed Switch 852-1816version=0.0.0 <V1.2.1.S0
WAGO · Lean Managed Switch 852-1816/010-000version=0.0.0 <V1.2.1.S0
WAGO · Lean Managed Switch 852-1813/000-001version=0.0.0 <V1.2.3.S0
WAGO · Lean Managed Switch 852-1812/010-000version=0.0.0 <V1.2.1.S0
WAGO · Industrial Managed Switch 852-603version=0.0.0 <V1.0.6.S0
WAGO · Industrial Managed Switch 852-1605version=0.0.0 <V1.2.5.S0
WAGO · Lean Managed Switch 852-1813/010-001version=0.0.0 <V1.2.1.S0
WAGO · Industrial Managed Switch 852-602version=0.0.0 <V1.0.6.S0
WAGO · Industrial Managed Switch 852-303version=0.0.0 <V1.2.8.S0

Published CVSS scores

10.0CERT@VDECVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/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-912Hidden Functionality
T1059.004Unix Shell
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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