CVE-2026-127277

CRITICAL 10.0

Linksys EA8100 SMB Service service_smbd.sh initialization

CVSS Score

10.0

EPSS Score

0.0%

EPSS Percentile

0th

A security flaw has been discovered in Linksys EA8100 1.0.3.216940. The affected element is an unknown function of the file etc/init.d/service_smbd.sh of the component SMB Service. Performing a manipulation of the argument ANON_ACCESS results in improper initialization. The attack can be initiated remotely. The exploit has been released to the public and may be used for attacks. The vendor was contacted early about this disclosure but did not respond in any way.

CWE	CWE-665
Vendor	linksys
Product	ea8100
Published	Nov 13, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H/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/436432 vuldb.com: https://vuldb.com/vuln/436432/cti vuldb.com: https://vuldb.com/cve/CVE-2026-127277 vuldb.com: https://vuldb.com/submit/1040999 github.com: https://github.com/geo-chen/oss/blob/main/Linksys.md#finding-5-smb-anonymous-access-mapped-to-the-admin-account-when-anonymous-access-is-enabled linksys.com: https://www.linksys.com/

Credits

🔍 geochen (VulDB User) VulDB CNA Team