Vulnerabilities > Zyxel

DATE CVE VULNERABILITY TITLE RISK
2022-06-09 CVE-2022-0823 Information Exposure Through Discrepancy vulnerability in Zyxel products
An improper control of interaction frequency vulnerability in Zyxel GS1200 series switches could allow a local attacker to guess the password by using a timing side-channel attack.
local
low complexity
zyxel CWE-203
2.1
2022-05-24 CVE-2022-26531 Improper Input Validation vulnerability in Zyxel products
Multiple improper input validation flaws were identified in some CLI commands 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 cause a buffer overflow or a system crash via a crafted payload.
local
low complexity
zyxel CWE-20
4.6
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.
local
low complexity
zyxel CWE-78
7.2
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.
network
zyxel CWE-79
4.3
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.
network
low complexity
zyxel CWE-287
4.0
2022-05-12 CVE-2022-30525 OS Command Injection vulnerability in Zyxel products
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.
network
low complexity
zyxel CWE-78
critical
10.0
2022-04-11 CVE-2022-26413 OS Command Injection vulnerability in Zyxel products
A command injection vulnerability in the CGI program of Zyxel VMG3312-T20A firmware version 5.30(ABFX.5)C0 could allow a local authenticated attacker to execute arbitrary OS commands on a vulnerable device via a LAN interface.
low complexity
zyxel CWE-78
7.7
2022-04-11 CVE-2022-26414 Classic Buffer Overflow vulnerability in Zyxel products
A potential buffer overflow vulnerability was identified in some internal functions of Zyxel VMG3312-T20A firmware version 5.30(ABFX.5)C0, which could be exploited by a local authenticated attacker to cause a denial of service.
local
low complexity
zyxel CWE-120
4.9
2022-04-11 CVE-2022-0556 Improper Privilege Management vulnerability in Zyxel AP Configurator 1.1.4
A local privilege escalation vulnerability caused by incorrect permission assignment in some directories of the Zyxel AP Configurator (ZAC) version 1.1.4, which could allow an attacker to execute arbitrary code as a local administrator.
local
low complexity
zyxel CWE-269
7.2
2022-03-28 CVE-2022-0342 Improper Authentication vulnerability in Zyxel products
An authentication bypass vulnerability in the CGI program of Zyxel USG/ZyWALL series firmware versions 4.20 through 4.70, USG FLEX series firmware versions 4.50 through 5.20, ATP series firmware versions 4.32 through 5.20, VPN series firmware versions 4.30 through 5.20, and NSG series firmware versions V1.20 through V1.33 Patch 4, which could allow an attacker to bypass the web authentication and obtain administrative access of the device.
network
low complexity
zyxel CWE-287
7.5