CVE-2021-35029

Description

An authentication bypasss vulnerability in the web-based management interface of Zyxel USG/Zywall series firmware versions 4.35 through 4.64 and USG Flex, ATP, and VPN series firmware versions 4.35 through 5.01, which could allow a remote attacker to execute arbitrary commands on an affected device.

Category

9.8
CVSS
Severity: Critical
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.71% Top 30%
Vendor Advisory zyxel.com
Affected: Zyxel USG/Zywall series Firmware
Affected: Zyxel USG FLEX series Firmware
Affected: Zyxel ATP series Firmware
Affected: Zyxel VPN series Firmware
Published at:
Updated at:

References

Link Tags
https://www.zyxel.com/support/Zyxel_security_advisory_for_attacks_against_security_appliances.shtml vendor advisory

Frequently Asked Questions

What is the severity of CVE-2021-35029?
CVE-2021-35029 has been scored as a critical severity vulnerability.
How to fix CVE-2021-35029?
To fix CVE-2021-35029, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2021-35029 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2021-35029 is being actively exploited. According to its EPSS score, there is a ~1% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2021-35029?
CVE-2021-35029 affects Zyxel USG/Zywall series Firmware, Zyxel USG FLEX series Firmware, Zyxel ATP series Firmware, Zyxel VPN series Firmware.
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