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Vulnerability record · CVE-2017-17411 · published 21 December 2017

CVE-2017-17411: Linksys WVBR0 web portal OS command injection allows unauthenticated root code execution

Linksys · Wvbr0 Firmware

CVE-2017-17411 is an OS command injection (CWE-78) in the web management portal of Linksys WVBR0 firmware. User-supplied data is passed to a system call without proper validation, letting a remote attacker run commands as root. Because no authentication is required, any network-reachable instance is exposed.

9.8 CVSS 3.0 Critical EPSS 88% · top 0.2% CWE-78 · OS command injection
9.8CVSS 3.0 base score, v2 10.0
88%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
10References, 6 tagged exploit
17 Jun 2026Last modified by NVD

Description

This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of Linksys WVBR0. Authentication is not required to exploit this vulnerability. The specific flaw exists within the web management portal. The issue lies in the lack of proper validation of user data before executing a system call. An attacker could leverage this vulnerability to execute code with root privileges. Was ZDI-CAN-4892.

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

Automated analysis

Generated by VULONE's analysis model from the NVD record, CISA KEV and EPSS data on 18 September 2026. Confidence: high.

critical priorityUnauthenticated remote command execution as root with public exploit code and very high EPSS probability.

What it is

CVE-2017-17411 is an OS command injection (CWE-78) in the web management portal of Linksys WVBR0 firmware. User-supplied data is passed to a system call without proper validation, letting a remote attacker run commands as root. Because no authentication is required, any network-reachable instance is exposed.

Impact

An attacker gains arbitrary command execution with root privileges on the device, allowing full compromise of the router and any traffic or credentials it handles.

Attack surface

Reached over the network through the web management portal (CVSS AV:N, PR:N, UI:N); no authentication or user interaction is needed.

Exploitation

Public exploit code exists (Metasploit PR and Exploit-DB entries), and EPSS is 0.87929 (99.755th percentile), though the CVE is not listed in CISA KEV.

What to do

  • Apply the vendor firmware update for Linksys WVBR0; if none is available, replace or retire the device.
  • Remove the web management portal from untrusted networks and restrict administrative access to a dedicated management VLAN or trusted hosts.
  • Block external access to the device's web management interface at the firewall or edge.
  • If the portal cannot be disabled or isolated, power down or replace the affected unit.

Detection

  • Monitor device and perimeter logs for HTTP requests to the WVBR0 web management portal from untrusted sources.
  • Inspect for shell metacharacters or command strings in requests to the portal's management endpoints.
  • Watch for unexpected outbound connections or processes spawned by the device's web service.

This assessment is produced automatically and is not human-reviewed. Verify against the vendor advisory before acting on it.

Affected products

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

References

LinkTags
http://www.securityfocus.com/bid/102212 Third Party AdvisoryVDB Entry
https://github.com/rapid7/metasploit-framework/pull/9336 ExploitThird Party Advisory
https://www.exploit-db.com/exploits/43363/ ExploitThird Party AdvisoryVDB Entry
https://www.exploit-db.com/exploits/43429/ ExploitThird Party AdvisoryVDB Entry
https://zerodayinitiative.com/advisories/ZDI-17-973 Third Party AdvisoryVDB Entry
http://www.securityfocus.com/bid/102212 Third Party AdvisoryVDB Entry
https://github.com/rapid7/metasploit-framework/pull/9336 ExploitThird Party Advisory
https://www.exploit-db.com/exploits/43363/ ExploitThird Party AdvisoryVDB Entry
https://www.exploit-db.com/exploits/43429/ ExploitThird Party AdvisoryVDB Entry
https://zerodayinitiative.com/advisories/ZDI-17-973 Third Party AdvisoryVDB Entry

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Source: NIST National Vulnerability Database (record CVE-2017-17411), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.