CVE-2021-34561

moderate-risk
Published 2021-08-31

In PEPPERL+FUCHS WirelessHART-Gateway <= 3.0.8 serious issue exists, if the application is not externally accessible or uses IP-based access restrictions. Attackers can use DNS Rebinding to bypass any IP or firewall based access restrictions that may be in place, by proxying through their target's browser.

Do I need to act?

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0.33% chance of exploitation
EPSS score — low exploit probability
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Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
7
CVSS 7.5/10 High
NETWORK / HIGH complexity

Affected Products (2)

Wha-Gw-F2D2-0-As-Z2-Eth Firmware
Wha-Gw-F2D2-0-As-Z2-Eth.Eip Firmware

Affected Vendors

Pepperl-Fuchs

References (2)

Third Party Advisory https://cert.vde.com/en-us/advisories/vde-2021-027
Third Party Advisory https://cert.vde.com/en-us/advisories/vde-2021-027
30
/ 100
moderate-risk
Severity 22/34 · High
Exploitability 1/34 · Minimal
Exposure 7/34 · Low