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Fencer Vulns
critical 10.0

CVE-2026-3587 json

Hidden CLI Function Allows Root Access

published 2026-03-23 7 mo ago modified 2026-06-17 4 mo ago also EUVD-2026-14385

cvss
10.0
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.7%
EPSS 0.7% chance of exploitation in 30 days, percentile 53%
public exploits
0
none known

Summary

An unauthenticated remote attacker can exploit a hidden function in the CLI prompt to escape the restricted interface, leading to full compromise of the device.

Patch / fix

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

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

cisa ICSA-26-085-01 updated cvss 10.0

WAGO GmbH & Co. KG Industrial Managed Switches

  • WAGO Industrial Managed Switch 000 Firmware V1.2.1.S0, Firmware < V1.2.1.S0 WAGO Industrial Managed Switch 001 Firmware V1.2.0.S0, Firmware V1.2.1.S1, Firmware V1.2.3.S0, Firmware < V1.2.0.S0, Firmware < V1.2.1.S0, Firmware < V1.2.3.S0 WAGO Industrial Managed Switch 303 Firmware V1.2.8.S0, Firmware < V1.2.8.S0 WAGO Industrial Managed Switch 602 Firmware V1.0.6.S0, Firmware < V1.0.6.S0 WAGO Industrial Managed Switch 603 Firmware V1.0.6.S0, Firmware < V1.0.6.S0 WAGO Industrial Managed Switch 1305 Firmware V1.2.0.S0, Firmware < V1.2.0.S0
    +5 more products
    WAGO Industrial Managed Switch 1505 Firmware V1.1.9.S0, Firmware < V1.1.9.S0 WAGO Industrial Managed Switch 1605 Firmware V1.2.5.S0, Firmware < V1.2.5.S0 WAGO Industrial Managed Switch 1812 Firmware V1.2.1.S0, Firmware < V1.2.1.S0 WAGO Industrial Managed Switch 1813 Firmware V1.2.1.S0, Firmware < V1.2.1.S0 WAGO Industrial Managed Switch 1816 Firmware V1.2.1.S0, Firmware < V1.2.1.S0
    affected: vendor fix
  • WAGO Industrial Managed Switch 000 Firmware V1.2.1.S1 WAGO Industrial Managed Switch 001 Firmware V1.2.0.S1, Firmware V1.2.3.S1, Firmware < V1.2.1.S0 WAGO Industrial Managed Switch 303 Firmware V1.2.8.S1 WAGO Industrial Managed Switch 602 Firmware V1.0.6.S1 WAGO Industrial Managed Switch 603 Firmware V1.0.6.S1 WAGO Industrial Managed Switch 1305 Firmware V1.2.0.S1
    +5 more products
    WAGO Industrial Managed Switch 1505 Firmware V1.1.9.S1 WAGO Industrial Managed Switch 1605 Firmware V1.2.5.S1 WAGO Industrial Managed Switch 1812 Firmware V1.2.1.S1 WAGO Industrial Managed Switch 1813 Firmware V1.2.1.S1 WAGO Industrial Managed Switch 1816 Firmware V1.2.1.S1
    fixed

Facts from CISA's republication of the vendor's own advisory (CSAF); the linked advisory is the authoritative source. CISA notification · csaf

CISA SSVC

Exploitation
none
Automatable
yes
Technical impact
total
Assessed
7 mo ago

Exploit prediction

0.69% chance of exploitation in the next 30 days, higher than 53% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 10.0 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

Affected products

  • WAGO Lean Managed Switch 852-1812
  • WAGO Lean Managed Switch 852-1813
  • WAGO Lean Managed Switch 852-1813-000-001
  • WAGO Lean Managed Switch 852-1816
  • WAGO Industrial Managed Switch 852-303
  • WAGO Industrial Managed Switch 852-1305
  • WAGO Industrial Managed Switch 852-1305-000-001
  • WAGO Industrial Managed Switch 852-1505-000-001
  • WAGO Industrial Managed Switch 852-1505
  • WAGO Industrial Managed Switch 852-602
  • WAGO Industrial Managed Switch 852-603
  • WAGO Industrial Managed Switch 852-1605
  • WAGO Lean Managed Switch 852-1812-010-000
  • WAGO Lean Managed Switch 852-1813-010-000
  • WAGO Lean Managed Switch 852-1816-010-000
  • WAGO Lean Managed Switch 852-1813/010-001

Classification

Weakness

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.