Intelligence online17 sources monitored8 actively exploited 7d26 published 24hChecked recently
Vulnerability record

CVE-2022-30525

Zyxel Multiple Firewalls OS Command Injection Vulnerability

CriticalExploitation confirmedCISA KEV
What should I do?

This vulnerability is in the CISA Known Exploited Vulnerabilities catalog: attackers are using it. If you run Multiple Firewalls, fix it now.

CISA required action: Apply updates per vendor instructions.

US federal civilian agencies must remediate by Jun 6, 2022.

Patch status

No official fix confirmed yet

Until a fix ships, follow the vendor's mitigations and CISA's required action, limit exposure of affected systems, and watch this record for a patch.

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.

Source: NIST National Vulnerability Database. Official vulnerability data, reproduced as published.

Affected products

ProductVendorSource
Multiple FirewallsZyxelKEV

Sources: KEV = CISA Known Exploited Vulnerabilities catalog. Version details have not been published yet.

Intelligence timeline

Developments from the last 30 days, newest first.

  1. CVSS scoredUpdateKEV

    CVE-2022-30525 scored CVSS 9.8: Zyxel Multiple Firewalls, Zyxel Multiple Firewalls OS Command Injection Vulnerability

    CISA lists this as exploited in the wild. Unpatched Multiple Firewalls systems are exposed to active attacks now.

    Basis: NIST National Vulnerability Database

1 earlier event is available with a subscription. See plans.

Coverage

We have not published a story about this vulnerability yet.

References

  • nvd.nist.gov https://nvd.nist.gov/vuln/detail/CVE-2022-30525
  • packetstormsecurity.com http://packetstormsecurity.com/files/167176/Zyxel-Remote-Command-Execution.html
  • packetstormsecurity.com http://packetstormsecurity.com/files/167182/Zyxel-Firewall-ZTP-Unauthenticated-Command-Injection.html
  • packetstormsecurity.com http://packetstormsecurity.com/files/167372/Zyxel-USG-FLEX-5.21-Command-Injection.html
  • packetstormsecurity.com http://packetstormsecurity.com/files/168202/Zyxel-Firewall-SUID-Binary-Privilege-Escalation.html
  • zyxel.com https://www.zyxel.com/support/Zyxel-security-advisory-for-OS-command-injection-vulnerability-of-firewalls.shtm…
  • cisa.gov https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2022-30525