Critical severity · published Jul 17, 2019
CVE-2019-11535
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
9.8
CVSS
5.1%
EPSS
No
On KEV
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 vector
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)5.1% · higher than 92% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
RF
Re6300 Firmware · Linksys
through 1.2.04.022 · source: NVD
RF
Re6400 Firmware · Linksys
through 1.2.04.022 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2019-11535
CVE.org
https://www.cve.org/CVERecord?id=CVE-2019-11535
Release Notes
http://s3.amazonaws.com/downloads.linksys.com/support/assets/releasenotes/Linksys%20RE6300%20RE6400%20Firmware%20Release%20Notes_v1.2.05.001.txt
More from Re6300 Firmware
9.8
CVE-2025-5447
Linksys RE6500/RE6250/RE6300/RE6350/RE7000/RE9000 ssid1MACFilter os command injection
9.8
CVE-2025-5446
Linksys RE6500/RE6250/RE6300/RE6350/RE7000/RE9000 RP_checkCredentialsByBBS os command injection
9.8
CVE-2025-5445
Linksys RE6500/RE6250/RE6300/RE6350/RE7000/RE9000 RP_checkFWByBBS os command injection
9.8
CVE-2025-5444
Linksys RE6500/RE6250/RE6300/RE6350/RE7000/RE9000 RP_UpgradeFWByBBS os command injection
9.8
CVE-2025-5443
Linksys RE6500/RE6250/RE6300/RE6350/RE7000/RE9000 wirelessAdvancedHidden os command injection