Cyber Resilience

CVE-2025-9520

High

Published: 26 January 2026

Published
26 January 2026
Modified
11 March 2026
KEV Added
—
Patch
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CVSS Score v4 8.3 CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:N/VI:H/VA:N/SC:L/SI:H/SA:L/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
EPSS Score 0.0039 31.1th percentile
Risk Priority 55 floored blend · peak EPSS

Summary

CVE-2025-9520 is a high-severity Authorization Bypass Through User-Controlled Key (CWE-639) vulnerability in Tp-Link Omada Controller. Its CVSS base score is 8.3 (High).

Operationally, ranked at the 31.1th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.

OWASP Top 10 for Web (2025)

A01:2025 Broken Access Control

EU & UK References

Vulnerability details

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

CWE(s)
CWE-639

Related Threats

No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.

Affected Assets

tp-link
omada controller
≤ 6.0

Mitigating Controls

Likely Mitigating Controls AI

Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.

AC-24 Access Control Decisions
addresses: CWE-639

Per-request decision making makes it harder to bypass authorization using user-controlled keys without proper validation in the decision process.

AC-3 Access Enforcement
addresses: CWE-639

Consistent enforcement of approved authorizations makes bypassing via user-controlled keys ineffective.

References