CVE-2020-25014

high-risk
Published 2020-11-27

A stack-based buffer overflow in fbwifi_continue.cgi on Zyxel UTM and VPN series of gateways running firmware version V4.30 through to V4.55 allows remote unauthenticated attackers to execute arbitrary code via a crafted http packet.

Do I need to act?

~
2.0% chance of exploitation in next 30 days
EPSS score — moderate exploit probability
-
Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
9
CVSS 9.8/10 Critical
NETWORK / LOW complexity

Affected Products (11)

Zld
Access Points Firmware
Access Points Firmware
Access Points Firmware
Access Points Firmware
Access Points Firmware
Access Points Firmware
Access Points Firmware
Access Points Firmware
Access Points Firmware
Access Points Firmware

Affected Vendors

Zyxel

References (4)

Release Notes https://businessforum.zyxel.com/categories/security-news-and-release
Vendor Advisory https://www.zyxel.com/support/Zyxel-security-advisory-for-buffer-overflow-vulner...
Release Notes https://businessforum.zyxel.com/categories/security-news-and-release
Vendor Advisory https://www.zyxel.com/support/Zyxel-security-advisory-for-buffer-overflow-vulner...
53
/ 100
high-risk
Severity 32/34 · Critical
Exploitability 5/34 · Minimal
Exposure 16/34 · Moderate