How severe is CVE-2026-9440?

CVE-2026-9440 has a CVSS 3.x base score of 6.3, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability low.

Is CVE-2026-9440 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (68th percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2026-9440?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2026-9440 have an EU (EUVD) identifier?

Yes. CVE-2026-9440 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-31651.

When was CVE-2026-9440 published?

CVE-2026-9440 was published on 2026-05-25 and last updated on 2026-06-17.

CVE-2026-9440

CVE-2026-9440 is a medium-severity vulnerability with a CVSS 3.x base score of 6.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-74.

Key facts

Severity: Medium (CVSS 3.x base score 6.3)
CVSS v2: 6.5
CVSS v4: 2.1
EPSS exploit prediction: 1% (68th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-31651
Weakness: CWE-74
Published: 2026-05-25
Last modified: 2026-06-17

Description

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 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.

Frequently asked questions

What is CVE-2026-9440?: 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 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.
How severe is CVE-2026-9440?: CVE-2026-9440 has a CVSS 3.x base score of 6.3, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability low.
Is CVE-2026-9440 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (68th percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2026-9440?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-9440 have an EU (EUVD) identifier?: Yes. CVE-2026-9440 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-31651.
When was CVE-2026-9440 published?: CVE-2026-9440 was published on 2026-05-25 and last updated on 2026-06-17.

References

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