Security News > 2022 > May > Zyxel warns of flaws impacting firewalls, APs, and controllers
Zyxel has published a security advisory to warn admins about multiple vulnerabilities affecting a wide range of firewall, AP, and AP controller products.
Large organizations use Zyxel products, and any exploitable flaws in them immediately capture the attention of threat actors.
CVE-2022-0734: Medium severity cross-site scripting vulnerability in the CGI component, allowing attackers to use a data-stealing script to snatch cookies and session tokens stored in the user's browser.
CVE-2022-26532: High severity command injection flaw in some CLI commands, allowing a local authenticated attacker to execute arbitrary OS commands.
CVE-2022-0910: Medium severity authentication bypass vulnerability in the CGI component, allowing an attacker to downgrade from two-factor authentication to one-factor authentication via an IPsec VPN client.
The above vulnerabilities impact USG/ZyWALL, USG FLEX, ATP, VPN, NSG firewalls, NXC2500 and NXC5500 AP controllers, and a range of Access Point products, including models of the NAP, NWA, WAC, and WAX series.
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Related Vulnerability
| DATE | CVE | VULNERABILITY TITLE | RISK |
|---|---|---|---|
| 2022-05-24 | CVE-2022-26532 | OS Command Injection vulnerability in Zyxel products A argument injection vulnerability in the 'packet-trace' CLI command of Zyxel USG/ZyWALL series firmware versions 4.09 through 4.71, USG FLEX series firmware versions 4.50 through 5.21, ATP series firmware versions 4.32 through 5.21, VPN series firmware versions 4.30 through 5.21, NSG series firmware versions 1.00 through 1.33 Patch 4, NXC2500 firmware version 6.10(AAIG.3) and earlier versions, NAP203 firmware version 6.25(ABFA.7) and earlier versions, NWA50AX firmware version 6.25(ABYW.5) and earlier versions, WAC500 firmware version 6.30(ABVS.2) and earlier versions, and WAX510D firmware version 6.30(ABTF.2) and earlier versions, that could allow a local authenticated attacker to execute arbitrary OS commands by including crafted arguments to the CLI command. | 7.2 |
| 2022-05-24 | CVE-2022-0910 | Improper Authentication vulnerability in Zyxel products A downgrade from two-factor authentication to one-factor authentication vulnerability in the CGI program of Zyxel USG/ZyWALL series firmware versions 4.32 through 4.71, USG FLEX series firmware versions 4.50 through 5.21, ATP series firmware versions 4.32 through 5.21, and VPN series firmware versions 4.32 through 5.21, that could allow an authenticated attacker to bypass the second authentication phase to connect the IPsec VPN server even though the two-factor authentication (2FA) was enabled. | 4.0 |
| 2022-05-24 | CVE-2022-0734 | Cross-site Scripting vulnerability in Zyxel products A cross-site scripting vulnerability was identified in the CGI program of Zyxel USG/ZyWALL series firmware versions 4.35 through 4.70, USG FLEX series firmware versions 4.50 through 5.20, ATP series firmware versions 4.35 through 5.20, and VPN series firmware versions 4.35 through 5.20, that could allow an attacker to obtain some information stored in the user's browser, such as cookies or session tokens, via a malicious script. | 4.3 |