CVE-2026-4309: Missing Authorization vulnerability in NEC Platforms, Ltd. Aterm Series allows a attacker to get a specific device…
CVE-2026-4309 · Severity: medium · CVSS 6.5 · Published 2026-03-27
Missing Authorization vulnerability in NEC Platforms, Ltd. Aterm Series allows a attacker to get a specific device information and change the settings via network.
No. Junglewise Threat Intelligence has no report of CVE-2026-4309 being exploited in the wild.
How severe is CVE-2026-4309?
Medium severity, with a CVSS score of 6.5, published 27 March 2026.
Which products and versions are affected?
Nec Aterm W1200ex-Ms, Nec Aterm W1200ex-Ms Firmware, Nec Aterm Wf1200cr, Nec Aterm Wf1200cr Firmware and 36 more. The advisory does not name versions.
Is there a fix for CVE-2026-4309?
No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
Am I affected by CVE-2026-4309?
Check whether you run Nec Aterm W1200ex-Ms, Nec Aterm W1200ex-Ms Firmware, Nec Aterm Wf1200cr or one of the others listed. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.