CVE-2025-9133
A missing authorization vulnerability in Zyxel ATP series firmware versions from V4.32 through V5.40, USG FLEX series firmware versions from V4.50 through V5.40, USG FLEX 50(W) series firmware versions from V4.16 through V5.40, and USG20(W)-VPN series…
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (5.44%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
A missing authorization vulnerability in Zyxel ATP series firmware versions from V4.32 through V5.40, USG FLEX series firmware versions from V4.50 through V5.40, USG FLEX 50(W) series firmware versions from V4.16 through V5.40, and USG20(W)-VPN series firmware versions from V4.16 through V5.40 could allow a semi-authenticated attacker—who has completed only the first stage of the two-factor authentication (2FA) process—to view and download the system configuration from an affected device.
- CVSS 3.1
- 8.1 HIGHCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
- EPSS
- 5.44% probability · 92th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-862
- Affected
- zyxel/zld
- Source
- security@zyxel.com.tw
References
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.