CVE•Published 2026-03-22•Modified 2026-04-30•1 article on news•7 live references•NVD data
CVE-2026-4558Linksys · Mr9600_firmware
Vulnerability data via NVD (ingested)
CVSS v3.1
8.8
HIGH
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS percentile
49
Exploit Prediction Scoring System · top 51% of all CVEs
Weaknesses (CWE)
Description
A flaw has been found in Linksys MR9600 2.0.6.206937. Affected is the function smartConnectConfigure of the file SmartConnect.lua. Executing a manipulation of the argument configApSsid/configApPassphrase/srpLogin/srpPassword can lead to os command injection. The attack may be launched remotely. The exploit has been published and may be used. The vendor was contacted early about this disclosure but did not respond in any way.
Timeline
Published 2026-03-22
Modified 2026-04-30
External references
Search for exposed instances
Shodan + Censys queries derived from NVD's CPE data. The vuln tag catches assets Shodan has explicitly linked to this CVE; the product / banner fingerprints find exposed instances even when the vuln tag was never applied (which is common).
Shodan · vuln tag0 hosts
vuln:CVE-2026-4558Hosts Shodan has explicitly fingerprinted as vulnerable.
Shodan · OS
os:"Mr9600 Firmware"Hosts Shodan identified as running Mr9600 Firmware.
More intel sources (5)
Shodan report
vuln:CVE-2026-4558Country / ASN / product breakdown for the vuln query.
Censys
vulnerabilities.cve_id: CVE-2026-4558Censys host search filtered to this CVE id.
grep.app
CVE-2026-4558Public source-code mentions — fast PoC discovery.
GitHub code
CVE-2026-4558GitHub code search for direct mentions.
Google dork
"CVE-2026-4558" exploit -site:nvd.nist.govWrite-ups and news, NVD excluded.