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Unrated severityNVD Advisory· Published Oct 21, 2025· Updated Feb 26, 2026

CVE-2025-9133

CVE-2025-9133

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.

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected products

6
  • Zyxel/ATP seriesllm-fuzzy2 versions
    >=4.32 <=5.40+ 1 more
    • (no CPE)range: >=4.32 <=5.40
    • (no CPE)range: versions from V4.32 through V5.40
  • Zyxel/USG FLEX seriesllm-fuzzy3 versions
    >=4.50 <=5.40+ 2 more
    • (no CPE)range: >=4.50 <=5.40
    • (no CPE)range: versions from V4.16 through V5.40
    • (no CPE)range: versions from V4.50 through V5.40
  • Zyxel/USG20(W)-VPN seriescpe-rescue
    Range: versions from V4.16 through V5.40

Patches

Vulnerability mechanics

References

1

News mentions

0

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