CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
9.7	$0-$5k	2.85

Summaryinfo

A vulnerability was found in WAGO Lean Managed Switch 852-1812, Lean Managed Switch 852-1813, Lean Managed Switch 852-1813-000-001, Lean Managed Switch 852-1816, Industrial Managed Switch 852-303, Industrial Managed Switch 852-1305, Industrial Managed Switch 852-1305-000-001, Industrial Managed Switch 852-1505-000-001, Industrial Managed Switch 852-1505, Industrial Managed Switch 852-602, Industrial Managed Switch 852-603, Industrial Managed Switch 852-1605, Lean Managed Switch 852-1812-010-000, Lean Managed Switch 852-1813-010-000 and Lean Managed Switch 852-1816-010-000 010-001. It has been declared as critical. This vulnerability affects unknown code of the component Restricted Interface. Executing a manipulation can lead to backdoor. This vulnerability appears as CVE-2026-3587. The attack may be performed from remote. There is no available exploit. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability has been found in WAGO Lean Managed Switch 852-1812, Lean Managed Switch 852-1813, Lean Managed Switch 852-1813-000-001, Lean Managed Switch 852-1816, Industrial Managed Switch 852-303, Industrial Managed Switch 852-1305, Industrial Managed Switch 852-1305-000-001, Industrial Managed Switch 852-1505-000-001, Industrial Managed Switch 852-1505, Industrial Managed Switch 852-602, Industrial Managed Switch 852-603, Industrial Managed Switch 852-1605, Lean Managed Switch 852-1812-010-000, Lean Managed Switch 852-1813-010-000 and Lean Managed Switch 852-1816-010-000 010-001 and classified as very critical. This vulnerability affects some unknown processing of the component Restricted Interface. The manipulation with an unknown input leads to a backdoor vulnerability. The CWE definition for the vulnerability is CWE-912. The product contains functionality that is not documented, not part of the specification, and not accessible through an interface or command sequence that is obvious to the product's users or administrators. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

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.

The advisory is available at certvde.com. This vulnerability was named CVE-2026-3587 since 03/05/2026. The exploitation appears to be easy. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. The technical details are unknown and an exploit is not available. The structure of the vulnerability defines a possible price range of USD $0-$5k at the moment (estimation calculated on 03/27/2026). This vulnerability is assigned to T1588.001 by the MITRE ATT&CK project.

Upgrading to version V1.2.1.S0 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2026-14385). Once again VulDB remains the best source for vulnerability data.

Productinfo

Vendor

• WAGO

Name

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

License

• commercial

CPE 2.3info

• 🔒
• 🔒
• 🔒

CPE 2.2info

• 🔒
• 🔒
• 🔒

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 9.9
VulDB Meta Temp Score: 9.7

VulDB Base Score: 9.8
VulDB Temp Score: 9.4
VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA Base Score: 10.0
CNA Vector (CERTVDE): 🔒

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock

VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Backdoor
CWE: CWE-912
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Lean Managed Switch 852-1812/Lean Managed Switch 852-1813/Lean Managed Switch 852-1813-000-001/Lean Managed Switch 852-1816/Industrial Managed Switch 852-303/Industrial Managed Switch 852-1305/Industrial Managed Switch 852-1305-000-001/Industrial Managed Switch 852-1505-000-001/Industrial Managed Switch 852-1505/Industrial Managed Switch 852-602/Industrial Managed Switch 852-603/Industrial Managed Switch 852-1605/Lean Managed Switch 852-1812-010-000/Lean Managed Switch 852-1813-010-000/Lean Managed Switch 852-1816-010-000 010-001 V1.2.1.S0

Timelineinfo

03/05/2026 CVE reserved
03/23/2026 +18 days Advisory disclosed
03/23/2026 +0 days VulDB entry created
03/27/2026 +4 days VulDB entry last update

Sourcesinfo

Advisory: VDE-2026-020
Status: Confirmed

CVE: CVE-2026-3587 (🔒)
GCVE (CVE): GCVE-0-2026-3587
GCVE (VulDB): GCVE-100-352498
EUVD: 🔒

Entryinfo

Created: 03/23/2026 09:30
Updated: 03/27/2026 20:50
Changes: 03/23/2026 09:30 (64), 03/23/2026 10:27 (1), 03/27/2026 20:50 (2)
Complete: 🔍
Cache ID: 216:5E8:103

Discussion

Do you know our Splunk app?

Download it now for free!