CVE-2020-12506

WAGO: Authentication Bypass Vulnerability in WAGO 750-36X and WAGO 750-8XX Versions <= FW03

CRITICAL
9.1
CVSS Score
Published: September 30, 2020 at 03:43 PM UTC
Updated: June 17, 2026 at 02:51 AM UTC
14 products affected across 1 vendor750-862 Firmware750-823 Firmware750-891 Firmware

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Severity
CRITICAL9.1
Exploit prediction
EPSS 1%

Description

Improper Authentication vulnerability in WAGO 750-8XX series with FW version <= FW03 allows an attacker to change the settings of the devices by sending specifically constructed requests without authentication This issue affects: WAGO 750-362, WAGO 750-363, WAGO 750-823, WAGO 750-832/xxx-xxx, WAGO 750-862, WAGO 750-891, WAGO 750-890/xxx-xxx in versions FW03 and prior versions.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v ≤ fw03
wago-750-362 (same device)
v ≤ fw03
wago-750-363 (same device)
v ≤ FW03
wago-750-823 (same device)
v ≤ FW03
wago-750-832 (same device)
v ≤ FW03
wago-750-862 (same device)
v ≤ FW03
wago-750-890 (same device)
v ≤ FW03
wago-750-891 (same device)
v ≤ FW03
v ≤ FW03
All versions

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (1)

x_refsource_CONFIRMThird Party Advisory
https://cert.vde.com/en-us/advisories/vde-2020-028

CVSS

9.1CRITICALCERTVDE
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-306

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