Is CVE-2026-127273 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-127273 being exploited in the wild.

How severe is CVE-2026-127273?

Medium severity, with a CVSS score of 4.3, published 13 November 2026.

Is there a fix for CVE-2026-127273?

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.

How is CVE-2026-127273 attacked?

It is attacked over the network or from the adjacent network, in a network appliance.

Am I affected by CVE-2026-127273?

Check whether you run Linksys EA8100 at an affected version. 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.

CVE-2026-127273: Linksys EA8100 missing authentication in JNAP API

CVE-2026-127273 · Severity: medium · CVSS 4.3 · Published 2026-11-13

The Linksys EA8100 router's JNAP API fails to authenticate access to network status functions, allowing an attacker on the local network to retrieve sensitive information about the router's WAN connection and admin password status. This exposes internal network configuration details that could facilitate further attacks or reconnaissance against the device.

Technologies: Linksys EA8100. Vendors: Linksys.

Quick answers

Is CVE-2026-127273 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-127273 being exploited in the wild.
How severe is CVE-2026-127273?: Medium severity, with a CVSS score of 4.3, published 13 November 2026.
Which products and versions are affected?: Linksys EA8100 1.0.3.216940.
Is there a fix for CVE-2026-127273?: 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.
How is CVE-2026-127273 attacked?: It is attacked over the network or from the adjacent network, in a network appliance.
Am I affected by CVE-2026-127273?: Check whether you run Linksys EA8100 at an affected version. 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.

Technical details

The JNAP API endpoints GetWANStatus, GetWANStatus3, and IsAdminPasswordDefault in the Linksys EA8100 router lack proper authentication checks, allowing unauthenticated network access to retrieve sensitive router state information. The vulnerability is exploitable cross-origin via DNS rebinding attacks and may be triggered remotely by an attacker on the adjacent network. This enables network reconnaissance and exposes whether a default admin password is configured.

Affected products

Linksys EA8100 1.0.3.216940

Timeline

2026-11-13: disclosed

References

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