CVE-2022-30525

Known Exploited Public Exploit

Description

A OS command injection vulnerability in the CGI program of Zyxel USG FLEX 100(W) firmware versions 5.00 through 5.21 Patch 1, USG FLEX 200 firmware versions 5.00 through 5.21 Patch 1, USG FLEX 500 firmware versions 5.00 through 5.21 Patch 1, USG FLEX 700 firmware versions 5.00 through 5.21 Patch 1, USG FLEX 50(W) firmware versions 5.10 through 5.21 Patch 1, USG20(W)-VPN firmware versions 5.10 through 5.21 Patch 1, ATP series firmware versions 5.10 through 5.21 Patch 1, VPN series firmware versions 4.60 through 5.21 Patch 1, which could allow an attacker to modify specific files and then execute some OS commands on a vulnerable device.

Category

9.8
CVSS
Severity: Critical
CVSS 3.1 •
CVSS 2.0 •
EPSS 94.45% Top 5%
KEV Since 
Vendor Advisory zyxel.com
Affected: Zyxel USG FLEX 100(W) firmware
Affected: Zyxel USG FLEX 200 firmware
Affected: Zyxel USG FLEX 500 firmware
Affected: Zyxel USG FLEX 700 firmware
Affected: Zyxel ATP series firmware
Affected: Zyxel VPN series firmware
Affected: Zyxel USG FLEX 50(W) firmware
Affected: Zyxel USG 20(W)-VPN firmware
Published at:
Updated at:

References

Link Tags
https://www.zyxel.com/support/Zyxel-security-advisory-for-OS-command-injection-vulnerability-of-firewalls.shtml vendor advisory
http://packetstormsecurity.com/files/167176/Zyxel-Remote-Command-Execution.html vdb entry third party advisory
http://packetstormsecurity.com/files/167182/Zyxel-Firewall-ZTP-Unauthenticated-Command-Injection.html exploit vdb entry third party advisory
http://packetstormsecurity.com/files/167372/Zyxel-USG-FLEX-5.21-Command-Injection.html exploit vdb entry third party advisory
http://packetstormsecurity.com/files/168202/Zyxel-Firewall-SUID-Binary-Privilege-Escalation.html third party advisory exploit

Frequently Asked Questions

What is the severity of CVE-2022-30525?
CVE-2022-30525 has been scored as a critical severity vulnerability.
How to fix CVE-2022-30525?
To fix CVE-2022-30525, 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-2022-30525 being actively exploited in the wild?
It is confirmed that CVE-2022-30525 is actively exploited. Be extra cautious if you are using vulnerable components. According to its EPSS score, there is a ~94% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2022-30525?
CVE-2022-30525 affects Zyxel USG FLEX 100(W) firmware, Zyxel USG FLEX 200 firmware, Zyxel USG FLEX 500 firmware, Zyxel USG FLEX 700 firmware, Zyxel ATP series firmware, Zyxel VPN series firmware, Zyxel USG FLEX 50(W) firmware, Zyxel USG 20(W)-VPN firmware.
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