What’s Vulnerable › Vulnerabilities

CVE-2021-34563: In WirelessHART-Gateway versions 3.0.8 and 3.0.9 the HttpOnly flag is missing in a cookie which allows client-side javascript to modify it

• Severity: low (CVSS 3.3 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2021-08-31 · updated 2026-06-17
• Weakness: CWE-1004

Description

In PEPPERL+FUCHS WirelessHART-Gateway 3.0.8 and 3.0.9 the HttpOnly attribute is not set on a cookie. This allows the cookie's value to be read or set by client-side JavaScript.

Affected products

• Pepperl-Fuchs Wha-Gw-F2D2-0-As-Z2-Eth.Eip Firmware: 3.0.8, 3.0.9
• Pepperl-Fuchs Wha-Gw-F2D2-0-As-Z2-Eth Firmware: 3.0.8, 3.0.9

References

• https://cert.vde.com/en-us/advisories/vde-2021-027
• https://cert.vde.com/en-us/advisories/vde-2021-027

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