Zyxel Multiple Firewalls
YES - ON THE CISA KEV LIST
CVE-2024-11667
Zyxel Multiple Firewalls Path Traversal Vulnerability
overdue since 2024-12-24
Zyxel: 13 entries (0.7% of all KEV entries are from this vendor); 1 added in 2026.
BOD 26-04 note: this is the date printed in the CISA catalog. A federal agency's actual deadline is set by its SSVC tier - Act (3 days), Attend (14 days), Track (60 days), or the next scheduled upgrade - counted from the KEV listing date or the date the vulnerability is identified in its environment, whichever comes first. Use the tier helper on each CVE page for your own window.
Your BOD 26-04 window (SSVC tier helper)
Your remediation window ends:
Description
Multiple Zyxel firewalls contain a path traversal vulnerability in the web management interface that could allow an attacker to download or upload files via a crafted URL.
Required action (CISA)
Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
Notes
https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-protecting-against-recent-firewall-threats-11-21-2024 ; https://nvd.nist.gov/vuln/detail/CVE-2024-11667
References
Other KEV entries for this vendor: Zyxel
- CVE-2026-7273 - GS1900 Series Switches (2026-09-21)
- CVE-2024-40891 - DSL CPE Devices (2025-02-11)
- CVE-2024-40890 - DSL CPE Devices (2025-02-11)
- CVE-2017-6884 - EMG2926 Routers (2023-09-18)
- CVE-2017-18368 - P660HN-T1A Routers (2023-08-07)
- CVE-2023-27992 - Multiple Network-Attached Storage (NAS) Devices (2023-06-23)
- CVE-2023-33009 - Multiple Firewalls (2023-06-05)
- CVE-2023-33010 - Multiple Firewalls (2023-06-05)
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