Unsanitized user input in the web interface for Linksys WiFi extender products (RE6400 and RE6300 through 1.2.04.022) allows for remote com…

published 2019-07-17 7y ago modified 2026-06-17 4mo ago also EUVD-2019-3206

cvss: 9.8; version 3.0, NVD
cisa kev: Not listed; not in CISA's catalog
epss: 5.1%; EPSS 5.1% chance of exploitation in 30 days, percentile 92%
public exploits: 0; none known

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.

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Exploit prediction

5.05% chance of exploitation in the next 30 days, higher than 92% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by	version	score	vector
NVD	3.0	9.8	CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD	2.0	10.0	AV:N/AC:L/Au:N/C:C/I:C/A:C

Classification

Weakness

CWE-77 Improper Neutralization of Special Elements used in a Command

References

s3.amazonaws.com /downloads.linksys.com/support/assets/releasenotes/Linksys%20RE6300%20RE6400%20Firmware%20Release%20Notes_v1.2
release-notes, third-party-advisory

Sources

CVE List CVE-2019-11535
NVD CVE-2019-11535

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