What’s Vulnerable › Vulnerabilities

CVE-2021-20995: WAGO: Managed Switches: Storage of user credentials in a cookie

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.5% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2021-05-13 · updated 2026-06-17
• Weakness: CWE-312

Description

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

Affected products

• WAGO 0852-0303 Firmware: through 1.2.3.s0
• WAGO 0852-1305/000-001 Firmware: through 1.0.4.s0
• WAGO 0852-1305 Firmware: through 1.1.7.s0
• WAGO 0852-1505/000-001 Firmware: through 1.0.4.s0
• WAGO 0852-1505 Firmware: through 1.1.6.s0

References

• https://cert.vde.com/en-us/advisories/vde-2021-013
• https://cert.vde.com/en-us/advisories/vde-2021-013

Get alerted when CVE-2021-20995 or the next vulnerability affects your stack