Cyber Resilience

CVE-2026-9440

Low

Published: 25 May 2026

Published
25 May 2026
Modified
26 May 2026
KEV Added
—
Patch
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CVSS Score v4 2.1 CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P/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 0.0141 80.9th percentile
Risk Priority 5 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2026-9440 is a low-severity Injection (CWE-74) vulnerability in Notion (inferred from references). Its CVSS base score is 2.1 (Low).

Operationally, exploitation aligns with the MITRE ATT&CK technique Exploit Public-Facing Application (T1190); ranked in the top 19.1% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.

EU & UK References

Vulnerability details

A vulnerability was identified in Edimax BR-6478AC 1.23. Affected by this vulnerability is the function formAccept of the file /goform/formAccept of the component POST Request Handler. Such manipulation of the argument submit-url leads to command injection. It is possible to…

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launch the attack remotely. The exploit is publicly available and might be used. The vendor was contacted early about this disclosure but did not respond in any way.

CWE(s)
CWE-74CWE-77

Related Threats

MITRE ATT&CK Enterprise TechniquesAI

T1190 Exploit Public-Facing Application Initial Access
Adversaries may attempt to exploit a weakness in an Internet-facing host or system to initially access a network.
attack.mitre.org →
Why these techniques?

Command injection in POST handler of public router web interface directly enables remote exploitation of the exposed application.

Confidence: HIGH · MITRE ATT&CK Enterprise v18.1

Affected Assets

Notion
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inferred from references and description; NVD did not file a CPE for this CVE

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.

SA-11 Developer Testing and Evaluation
addresses: CWE-74

Developer assessments and testing (including injection-focused techniques) identify improper neutralization of special elements, and the verifiable flaw remediation corrects them pre-deployment.

SI-4 System Monitoring
addresses: CWE-74

Identifies indicators of injection attacks (command, SQL, LDAP, etc.) via anomaly and attack monitoring.

References