CVE-2021-35031

Description

A vulnerability in the TFTP client of Zyxel GS1900 series firmware, XGS1210 series firmware, and XGS1250 series firmware, which could allow an authenticated LAN user to execute arbitrary OS commands via the GUI of the vulnerable device.

Category

6.8
CVSS
Severity: Medium
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.08%
Vendor Advisory zyxel.com
Affected: Zyxel GS1900 series firmware
Affected: Zyxel XGS1210 series firmware
Affected: Zyxel XGS1250 series firmware
Published at:
Updated at:

References

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

Frequently Asked Questions

What is the severity of CVE-2021-35031?
CVE-2021-35031 has been scored as a medium severity vulnerability.
How to fix CVE-2021-35031?
To fix CVE-2021-35031, 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-2021-35031 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2021-35031 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2021-35031?
CVE-2021-35031 affects Zyxel GS1900 series firmware, Zyxel XGS1210 series firmware, Zyxel XGS1250 series firmware.
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