AEGLIX vulnerability intelligence
CVE-2022-30525
CRITICAL · CVSS 9.8 · Analyzed
Published: 2022-05-12 · Updated: 2026-06-17 · Source: NVD
Vulnerability overview
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.
Severity and scoring
- CVSS score
- 9.8 · CRITICAL
- CVSS version
- 3.1
- CVSS vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- Weaknesses
- CWE-78
CVSS measures technical severity; it does not establish whether this vulnerability is being exploited in your environment.
Known exploitation and remediation
Listed in CISA’s Known Exploited Vulnerabilities catalog.
- Affected product
- Zyxel · Multiple Firewalls
- Added to catalog
- 2022-05-16
- Required action
- Apply updates per vendor instructions.
- CISA remediation due date
- 2022-06-06
CISA deadlines apply to the organizations covered by its directives. Confirm your own remediation requirements.
Verify affected versions and patch availability in the vendor advisory before making changes.
Affected products and versions
cpe:2.3:o:zyxel:usg_flex_100w_firmware:*:*:*:*:*:*:*:*
From (inclusive): 5.00
Before (exclusive): 5.30
cpe:2.3:o:zyxel:usg_flex_200_firmware:*:*:*:*:*:*:*:*
From (inclusive): 5.00
Before (exclusive): 5.30
cpe:2.3:o:zyxel:usg_flex_500_firmware:*:*:*:*:*:*:*:*
From (inclusive): 5.00
Through (inclusive): 5.30
cpe:2.3:o:zyxel:usg_flex_700_firmware:*:*:*:*:*:*:*:*
From (inclusive): 5.00
Before (exclusive): 5.30
cpe:2.3:o:zyxel:vpn100_firmware:*:*:*:*:*:*:*:*
From (inclusive): 4.60
Before (exclusive): 5.30
cpe:2.3:o:zyxel:vpn1000_firmware:*:*:*:*:*:*:*:*
From (inclusive): 4.60
Before (exclusive): 5.30
cpe:2.3:o:zyxel:vpn300_firmware:*:*:*:*:*:*:*:*
From (inclusive): 4.60
Before (exclusive): 5.30
cpe:2.3:o:zyxel:vpn50_firmware:*:*:*:*:*:*:*:*
From (inclusive): 4.60
Before (exclusive): 5.30
cpe:2.3:o:zyxel:atp100_firmware:*:*:*:*:*:*:*:*
From (inclusive): 5.10
Before (exclusive): 5.30
cpe:2.3:o:zyxel:atp100w_firmware:*:*:*:*:*:*:*:*
From (inclusive): 5.10
Before (exclusive): 5.30
cpe:2.3:o:zyxel:atp200_firmware:*:*:*:*:*:*:*:*
From (inclusive): 5.10
Before (exclusive): 5.30
cpe:2.3:o:zyxel:atp500_firmware:*:*:*:*:*:*:*:*
From (inclusive): 5.10
Before (exclusive): 5.30
cpe:2.3:o:zyxel:atp700_firmware:*:*:*:*:*:*:*:*
From (inclusive): 5.10
Before (exclusive): 5.30
cpe:2.3:o:zyxel:atp800_firmware:*:*:*:*:*:*:*:*
From (inclusive): 5.10
Before (exclusive): 5.30
cpe:2.3:o:zyxel:usg_flex_50w_firmware:*:*:*:*:*:*:*:*
From (inclusive): 5.10
Before (exclusive): 5.30
cpe:2.3:o:zyxel:usg20w-vpn_firmware:*:*:*:*:*:*:*:*
From (inclusive): 5.10
Before (exclusive): 5.30
These are NVD CPE applicability entries. Some products depend on configuration conditions; consult the official record to confirm applicability.
Advisories and references
- http://packetstormsecurity.com/files/167176/Zyxel-Remote-Command-Execution.html
Third Party Advisory · VDB Entry
- http://packetstormsecurity.com/files/167182/Zyxel-Firewall-ZTP-Unauthenticated-Command-Injection.html
Exploit · Third Party Advisory · VDB Entry
- http://packetstormsecurity.com/files/167372/Zyxel-USG-FLEX-5.21-Command-Injection.html
Exploit · Third Party Advisory · VDB Entry
- http://packetstormsecurity.com/files/168202/Zyxel-Firewall-SUID-Binary-Privilege-Escalation.html
Exploit · Third Party Advisory
- 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
Third Party Advisory · VDB Entry
- http://packetstormsecurity.com/files/167182/Zyxel-Firewall-ZTP-Unauthenticated-Command-Injection.html
Exploit · Third Party Advisory · VDB Entry
- http://packetstormsecurity.com/files/167372/Zyxel-USG-FLEX-5.21-Command-Injection.html
Exploit · Third Party Advisory · VDB Entry
- http://packetstormsecurity.com/files/168202/Zyxel-Firewall-SUID-Binary-Privilege-Escalation.html
Exploit · Third Party Advisory
- https://www.zyxel.com/support/Zyxel-security-advisory-for-OS-command-injection-vulnerability-of-firewalls.shtml
Vendor Advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2022-30525
US Government Resource