Strix
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CVE-2021-34561

HIGHCVSS 8.8/10EPSS 0.87%

Last modified

CVE-2021-34561 is a high-severity vulnerability rated 8.8/10 on the CVSS scale. 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.. EPSS estimates a 0.87% chance of exploitation in the next 30 days.

Description

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.

Metrics

CVSS 3.1
8.8/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

EPSS Probability
0.87%

54.1th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
Pepperl-FuchsWha-Gw-F2d2-0-As-Z2-Eth Firmware<= 3.0.8
Pepperl-FuchsWha-Gw-F2d2-0-As-Z2-Eth.Eip Firmware<= 3.0.8

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2021-34561?
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.
How severe is CVE-2021-34561?
CVE-2021-34561 has a CVSS score of 8.8/10 (HIGH severity). The EPSS model estimates a 0.87% probability of exploitation in the next 30 days.
How do I fix CVE-2021-34561?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-34561?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST