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Vulnerability record · CVE-2019-11535 · published 17 July 2019

CVE-2019-11535: Linksys re6400 firmware command injection vulnerability

Linksys · Re6400 Firmware

Unsanitized user input in the web interface for Linksys WiFi extender products (RE6400 and RE6300 through 1.2.04.022) allows for remote command execution. An attacker can access system OS configurations and commands that are not intended for use beyond the web UI.

9.8 CVSS 3.0 Critical EPSS 5.1% · top 8.0% CWE-77 · Command injection
9.8CVSS 3.0 base score, v2 10.0
5.1%EPSS exploitation probability, 30 days
NoNot in CISA KEV
2Affected product versions listed by NVD
2References
17 Jun 2026Last modified by NVD

Description

Unsanitized user input in the web interface for Linksys WiFi extender products (RE6400 and RE6300 through 1.2.04.022) allows for remote command execution. An attacker can access system OS configurations and commands that are not intended for use beyond the web UI.

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

2 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://s3.amazonaws.com/downloads.linksys.com/support/assets/releasenotes/Linksys%20RE6300%20RE6400%20Firmware%20Release Release NotesThird Party Advisory
http://s3.amazonaws.com/downloads.linksys.com/support/assets/releasenotes/Linksys%20RE6300%20RE6400%20Firmware%20Release Release NotesThird Party Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

7.4CVE-2025-14136Linksys re6500 firmware memory buffer overflow vulnerabilityA security flaw has been discovered in Linksys RE6500, RE6250, RE6300, RE6350, RE7000 and RE9000 1.0.013.001/1.0.04.001/1.0.04.002/1.1.05.003/1.2.07.…EPSS 1.1%7.4CVE-2025-14135Linksys re6500 firmware memory buffer overflow vulnerabilityA vulnerability was identified in Linksys RE6500, RE6250, RE6300, RE6350, RE7000 and RE9000 1.0.013.001/1.0.04.001/1.0.04.002/1.1.05.003/1.2.07.001. …EPSS 0.87%7.4CVE-2025-14134Linksys re6500 firmware memory buffer overflow vulnerabilityA vulnerability was determined in Linksys RE6500, RE6250, RE6300, RE6350, RE7000 and RE9000 1.0.013.001/1.0.04.001/1.0.04.002/1.1.05.003/1.2.07.001. …EPSS 0.87%7.4CVE-2025-14133Linksys re6500 firmware memory buffer overflow vulnerabilityA vulnerability was found in Linksys RE6500, RE6250, RE6300, RE6350, RE7000 and RE9000 1.0.013.001/1.0.04.001/1.0.04.002/1.1.05.003/1.2.07.001. Affec…EPSS 0.87%7.4CVE-2025-9481Linksys re6250 firmware memory buffer overflow vulnerabilityA security vulnerability has been detected in Linksys RE6250, RE6300, RE6350, RE6500, RE7000 and RE9000 1.0.013.001/1.0.04.001/1.0.04.002/1.1.05.003/…EPSS 1.4%7.4CVE-2025-9482Linksys re6250 firmware memory buffer overflow vulnerabilityA vulnerability was detected in Linksys RE6250, RE6300, RE6350, RE6500, RE7000 and RE9000 1.0.013.001/1.0.04.001/1.0.04.002/1.1.05.003/1.2.07.001. Th…EPSS 8.5%7.4CVE-2025-9483Linksys re6500 firmware memory buffer overflow vulnerabilityA flaw has been found in Linksys RE6250, RE6300, RE6350, RE6500, RE7000 and RE9000 1.0.013.001/1.0.04.001/1.0.04.002/1.1.05.003/1.2.07.001. Affected …EPSS 1.0%7.4CVE-2025-9393Linksys re6250 firmware memory buffer overflow vulnerabilityA vulnerability was detected in Linksys RE6250, RE6300, RE6350, RE6500, RE7000 and RE9000 1.0.013.001/1.0.04.001/1.0.04.002/1.1.05.003/1.2.07.001. Th…EPSS 0.97%

Source: NIST National Vulnerability Database (record CVE-2019-11535), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.