CVE-2026-27847

Missing authentication in Linksys MR9600, Linksys MX4200

CVSS 9.8 CRITICALEPSS 0.3%CWE-89

Vexday Risk Score

28Low

SSVC decision (CISA)

Track

No exploitation signal → monitor

CVSS 9.8EPSS 0.3%KEV nãoPoC —Nuclei —Metasploit —Patch —

Lifecycle

25 Feb 2026Published on NVD

Recommendation: Monitor — no exploitation signal at the moment.

Due to improper neutralization of special elements, SQL statements can be injected via the handshake of a TLS-SRP connection. This can be used to inject known credentials into the database that can be utilized to successfully complete the handshake and use the protected service. This issue affects MR9600: 1.0.4.205530; MX4200: 1.0.13.210200.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

Linksys · MR9600 Linksys · MX4200

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References

https://www.syss.de/fileadmin/dokumente/Publikationen/Advisories/SYSS-2025-009.txt