CVE-2025-9133 describes a missing authorization vulnerability in Zyxel ATP, USG FLEX, USG FLEX 50(W), and USG20(W)-VPN series firmware versions. A semi-authenticated attacker, having completed the first stage of 2FA, can exploit this to view and download system configurations. With a CVSS score of 8.1 (HIGH), this vulnerability has a network attack vector, low attack complexity, and high impact on confidentiality and integrity. Currently, there is no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
>= 4.32, < 5.41CPE matchmatch criteria | cpe:2.3:o:zyxel:zld:*:*:*:*:*:*:*:* | ||
>= 4.50, < 5.41CPE matchmatch criteria | cpe:2.3:o:zyxel:zld:*:*:*:*:*:*:*:* | ||
>= 4.16, < 5.41CPE matchmatch criteria | cpe:2.3:o:zyxel:zld:*:*:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.3 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.
No media coverage found for this CVE.
The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.
Zyxel security advisory for post-authentication command injection and missing authorization vulnerabilities in ZLD firewalls
Oct 21, 2025Zyxel security advisory for post-authentication command injection and missing authorization vulnerabilities in ZLD firewalls
Oct 21, 2025