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CVSS: 9.0EPSS: 1%CPEs: 38EXPL: 0

CVE-2023-27991

https://notcve.org/view.php?id=CVE-2023-27991

24 Apr 2023 — The post-authentication command injection vulnerability in the CLI command of Zyxel ATP series firmware versions 4.32 through 5.35, USG FLEX series firmware versions 4.50 through 5.35, USG FLEX 50(W) firmware versions 4.16 through 5.35, USG20(W)-VPN firmware versions 4.16 through 5.35, and VPN series firmware versions 4.30 through 5.35, which could allow an authenticated attacker to execute some OS commands remotely. • https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-xss-vulnerability-and-post-authentication-command-injection-vulnerability-in-firewalls • CWE-78: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') •

CVSS: 8.3EPSS: 0%CPEs: 50EXPL: 0

CVE-2022-38547

https://notcve.org/view.php?id=CVE-2022-38547

07 Feb 2023 — A post-authentication command injection vulnerability in the CLI command of Zyxel ZyWALL/USG series firmware versions 4.20 through 4.72, VPN series firmware versions 4.30 through 5.32, USG FLEX series firmware versions 4.50 through 5.32, and ATP series firmware versions 4.32 through 5.32, which could allow an authenticated attacker with administrator privileges to execute OS commands. • https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-post-authentication-rce-in-firewalls • CWE-78: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') •

CVSS: 6.4EPSS: 0%CPEs: 38EXPL: 0

CVE-2022-40603

https://notcve.org/view.php?id=CVE-2022-40603

06 Dec 2022 — A cross-site scripting (XSS) vulnerability in the CGI program of Zyxel ZyWALL/USG series firmware versions 4.30 through 4.72, VPN series firmware versions 4.30 through 5.31, USG FLEX series firmware versions 4.50 through 5.31, and ATP series firmware versions 4.32 through 5.31, which could allow an attacker to trick a user into visiting a crafted URL with the XSS payload. Then, the attacker could gain access to some browser-based information if the malicious script is executed on the victim’s browser. Una v... • https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-xss-vulnerability-in-firewalls • CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') •

CVSS: 6.8EPSS: 0%CPEs: 50EXPL: 0

CVE-2022-2030

https://notcve.org/view.php?id=CVE-2022-2030

19 Jul 2022 — A directory traversal vulnerability caused by specific character sequences within an improperly sanitized URL was identified in some CGI programs of Zyxel USG FLEX 100(W) firmware versions 4.50 through 5.30, USG FLEX 200 firmware versions 4.50 through 5.30, USG FLEX 500 firmware versions 4.50 through 5.30, USG FLEX 700 firmware versions 4.50 through 5.30, USG FLEX 50(W) firmware versions 4.16 through 5.30, USG20(W)-VPN firmware versions 4.16 through 5.30, ATP series firmware versions 4.32 through 5.30, VPN ... • https://www.zyxel.com/support/Zyxel-security-advisory-authenticated-directory-traversal-vulnerabilities-of-firewalls.shtml • CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') •

CVSS: 7.8EPSS: 3%CPEs: 50EXPL: 3

CVE-2022-30526 – Zyxel Firewall SUID Binary Privilege Escalation

https://notcve.org/view.php?id=CVE-2022-30526

19 Jul 2022 — A privilege escalation vulnerability was identified in the CLI command of Zyxel USG FLEX 100(W) firmware versions 4.50 through 5.30, USG FLEX 200 firmware versions 4.50 through 5.30, USG FLEX 500 firmware versions 4.50 through 5.30, USG FLEX 700 firmware versions 4.50 through 5.30, USG FLEX 50(W) firmware versions 4.16 through 5.30, USG20(W)-VPN firmware versions 4.16 through 5.30, ATP series firmware versions 4.32 through 5.30, VPN series firmware versions 4.30 through 5.30, USG/ZyWALL series firmware vers... • https://packetstorm.news/files/id/168202 • CWE-269: Improper Privilege Management •

CVSS: 7.8EPSS: 5%CPEs: 145EXPL: 1

CVE-2022-26532 – Zyxel Buffer Overflow / Format String / Command Injection

https://notcve.org/view.php?id=CVE-2022-26532

24 May 2022 — 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 versi... • https://packetstorm.news/files/id/167464 • CWE-78: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') CWE-88: Improper Neutralization of Argument Delimiters in a Command ('Argument Injection') •

CVSS: 6.5EPSS: 0%CPEs: 64EXPL: 0

CVE-2022-0910

https://notcve.org/view.php?id=CVE-2022-0910

24 May 2022 — 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. Se ha detect... • https://www.zyxel.com/support/multiple-vulnerabilities-of-firewalls-AP-controllers-and-APs.shtml • CWE-287: Improper Authentication •

CVSS: 6.1EPSS: 14%CPEs: 64EXPL: 0

CVE-2022-0734

https://notcve.org/view.php?id=CVE-2022-0734

24 May 2022 — 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. Se identificó una vulnerabilidad de tipo cross-site scripting en el programa CG... • https://www.zyxel.com/support/multiple-vulnerabilities-of-firewalls-AP-controllers-and-APs.shtml • CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') •

CVSS: 7.8EPSS: 1%CPEs: 145EXPL: 2

CVE-2022-26531 – Zyxel zysh Format String Proof of Concept

https://notcve.org/view.php?id=CVE-2022-26531

24 May 2022 — 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 earl... • https://packetstorm.news/files/id/177036 • CWE-20: Improper Input Validation •

CVSS: 10.0EPSS: 94%CPEs: 32EXPL: 22

CVE-2022-30525 – Zyxel Multiple Firewalls OS Command Injection Vulnerability

https://notcve.org/view.php?id=CVE-2022-30525

12 May 2022 — 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 thro... • https://packetstorm.news/files/id/167372 • CWE-78: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') •