by Kastro
Paper/Archive/CVE-2022-30525

CVE-2022-30525

Zyxel USG FLEX 100(W) firmware — Zyxel Multiple Firewalls OS Command Injection Vulnerability

KEV · due 6 JunEPSS 100%public exploitSSVC actCVSS 9.8
critical.is priorityof 100
99
CVSS 9.8 (CNA)9.8 / 10 × 3029.4In CISA KEV+3030.0EPSS percentile 100.01.000 × 2020.0Exploit: SSVC active+1010.0SSVC exploitation: active+1010.0
Description · from the CVE record

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.

Affected

ProductAffectedFixed inSource
USG FLEX 100(W) firmware5.00 through 5.21 Patch 1–CNA
USG FLEX 200 firmware5.00 through 5.21 Patch 1–CNA
USG FLEX 500 firmware5.00 through 5.21 Patch 1–CNA
USG FLEX 700 firmware5.00 through 5.21 Patch 1–CNA
ATP series firmware5.10 through 5.21 Patch 1–CNA
VPN series firmware4.60 through 5.21 Patch 1–CNA
USG FLEX 50(W) firmware5.10 through 5.21 Patch 1–CNA
USG 20(W)-VPN firmware5.10 through 5.21 Patch 1–CNA

Scores by source

Zyxel (CNA)9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CISA ADPSSVCExploitation: active · Automatable: yes · Technical impact: total

References

refzyxel.com/support/Zyxel-security-advisory-for-OS-command-injection-vulnerability-of-firewalls.shtmlrefpacketstormsecurity.com/files/167176/Zyxel-Remote-Command-Execution.htmlrefpacketstormsecurity.com/files/167182/Zyxel-Firewall-ZTP-Unauthenticated-Command-Injection.htmlrefpacketstormsecurity.com/files/167372/Zyxel-USG-FLEX-5.21-Command-Injection.htmlrefpacketstormsecurity.com/files/168202/Zyxel-Firewall-SUID-Binary-Privilege-Escalation.htmlrefcisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2022-30525kevcisa.gov/known-exploited-vulnerabilities-catalog