CVE-2026-127273

MEDIUM 4.3

Linksys EA8100 JNAP API IsAdminPasswordDefault missing authentication

CVSS Score

4.3

EPSS Score

0.0%

EPSS Percentile

0th

A vulnerability has been found in Linksys EA8100 1.0.3.216940. This affects the function GetWANStatus/GetWANStatus3/IsAdminPasswordDefault of the component JNAP API. The manipulation leads to missing authentication. The attack is possible to be carried out remotely. The exploit has been disclosed to the public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.

CWE	CWE-306 CWE-287
Vendor	linksys
Product	ea8100
Published	Nov 12, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N/E:P/RL:X/RC:C

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Scope

Confidentiality

Integrity

Availability

Affected Versions

Linksys / EA8100

1.0.3.216940

References

NVD ↗ CVE.org ↗ EPSS Data ↗

vuldb.com: https://vuldb.com/vuln/436428 vuldb.com: https://vuldb.com/vuln/436428/cti vuldb.com: https://vuldb.com/cve/CVE-2026-127273 vuldb.com: https://vuldb.com/submit/1040994 github.com: https://github.com/geo-chen/oss/blob/main/Linksys.md#finding-1-unauthenticated-network-reconnaissance-via-getwanstatusgetwanstatus3isadminpassworddefault-exploitable-cross-origin-via-dns-rebinding linksys.com: https://www.linksys.com/

Credits

🔍 geochen (VulDB User) VulDB CNA Team