What is CVE-2025-9520?

CVE-2025-9520 is a medium-severity vulnerability in TP-Link Omada Controller, classified under Authorization Bypass Through User-Controlled Key. CVSS score: 6.8/10. Published 2026-01-26.

How severe is CVE-2025-9520?

Medium severity. CVSS v3 base score is 6.8 out of 10.

Auth bypass in TP-Link Omada Controller

CVE-2025-9520

An IDOR vulnerability exists in Omada Controllers that allows an attacker with Administrator permissions to manipulate requests and potentially hijack the Owner account.

Vulnerability class: IDOR (Insecure Direct Object Reference)

Published 2026-01-26 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 6.8 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.004 (36.4th percentile), scored 2026-10-01.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 36th percentile — 36.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: +0.000

Affected products

TP-Link Omada Controller
TP-Link Systems Inc. Omada Controller — versions 0

Weakness classification (CWE)

CWE-639 — Authorization Bypass Through User-Controlled Key

References

f23511db-6c3e-4e32-a477-6aa17d310630 (vendor-advisory, Vendor Advisory)
f23511db-6c3e-4e32-a477-6aa17d310630 (Product, patch)

Frequently asked questions

What is CVE-2025-9520?: CVE-2025-9520 is a medium-severity vulnerability in TP-Link Omada Controller, classified under Authorization Bypass Through User-Controlled Key. CVSS score: 6.8/10. Published 2026-01-26.
How severe is CVE-2025-9520?: Medium severity. CVSS v3 base score is 6.8 out of 10.