Vulnerability Monitor

The vendors, products, and vulnerabilities you care about

CVE-2019-12550

WAGO 852-303 before FW06, 852-1305 before FW06, and 852-1505 before FW03 devices contain hardcoded users and passwords that can be used to login via SSH and TELNET.

Security Impact Summary

This vulnerability carries a CRITICAL severity rating with a CVSS v3.1 score of 9.8, indicating it can be exploited remotely over the network with relatively low complexity without requiring user interaction and does not require pre-existing privileges . The vulnerability impacts confidentiality (data exposure), integrity (unauthorized modifications), and availability (service disruption) for affected systems. Impacting 6 products from wago, from wago, from wago and 3 others, organizations running these solutions should prioritize assessment and patching.

Historical Context

First disclosed in 2019, this vulnerability was reported during a period defined by widespread IoT adoption challenges, mobile security concerns, and the emergence of advanced persistent threat (APT) techniques. Contemporary mitigation strategies focused on secure development practices and third-party component vetting.

Published

2019-06-17T17:15:11.117

Last Modified

2024-11-21T04:23:04.880

Status

Modified

Source

[email protected]

Severity

CVSSv3.0: 9.8 (CRITICAL)

CVSSv2 Vector

AV:N/AC:L/Au:N/C:C/I:C/A:C

Access Vector: NETWORK
Access Complexity: LOW
Authentication: NONE
Confidentiality Impact: COMPLETE
Integrity Impact: COMPLETE
Availability Impact: COMPLETE

Exploitability Score

10.0

Impact Score

10.0

Weaknesses

Type: Primary
CWE-798

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Operating System	wago	852-303_firmware	< 1.2.2.s0	Yes
Hardware	wago	852-303	-	No
Operating System	wago	852-1305_firmware	< 1.1.6.s0	Yes
Hardware	wago	852-1305	-	No
Operating System	wago	852-1505_firmware	< 1.1.5.s0	Yes
Hardware	wago	852-1505	-	No

References

https://cert.vde.com/en-us/advisories/vde-2019-013 Third Party Advisory ([email protected])
https://ics-cert.us-cert.gov/advisories/ICSA-19-164-02 Third Party Advisory ([email protected])
https://www.wago.com/us/ Vendor Advisory ([email protected])
https://cert.vde.com/en-us/advisories/vde-2019-013 Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://ics-cert.us-cert.gov/advisories/ICSA-19-164-02 Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://www.wago.com/us/ Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)

How SecUtils Interprets This CVE

SecUtils normalizes and enriches National Vulnerability Database (NVD) records by standardizing vendor and product identifiers, aggregating vulnerability metadata from both NVD and MITRE sources, and providing structured context for security teams. For wago's affected products, we extract Common Platform Enumeration (CPE) data, Common Weakness Enumeration (CWE) classifications, CVSS severity metrics, and reference data to enable rapid vulnerability prioritization and asset correlation. This record contains no exploit code, proof-of-concept instructions, or attack methodologies—only defensive intelligence necessary for patch management, risk assessment, and security operations.