CVE-2021-20995

WAGO: Managed Switches: Storage of user credentials in a cookie

HIGH
7.5
CVSS Score
Published: May 13, 2021 at 01:45 PM UTC
Updated: June 17, 2026 at 03:34 AM UTC
10 products affected across 1 vendor0852-1305 Firmware0852-1505 /000-001 Firmware0852-1505 Firmware

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Severity
HIGH7.5
Exploit prediction
EPSS 0.5%

Description

In multiple managed switches by WAGO in different versions the webserver cookies of the web based UI contain user credentials.

Affected

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

v ≤ 1.2.3.s0
wago-0852-0303 (same device)
v ≤ 1.0.4.s0
wago-0852-1305-000-001 (same device)
v ≤ 1.1.7.s0
wago-0852-1305 (same device)
v ≤ 1.0.4.s0
wago-0852-1505-000-001 (same device)
v ≤ 1.1.6.s0
wago-0852-1505 (same device)
v ≤ V1.2.3.S0
v ≤ V1.1.7.S0
v ≤ V1.0.4.S0
v ≤ V1.1.6.S0
v ≤ V1.0.4.S0

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-2021-013

CVSS

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

Quick Info

StatusMODIFIED
CWE
CWE-312

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