Platform
other
Component
buffalo-wi-fi-router-products
A critical Command Injection vulnerability (CVE-2026-27650) has been identified in BUFFALO Wi-Fi router products. Successful exploitation allows an attacker to execute arbitrary operating system commands on the affected devices, leading to potential compromise and data theft. The vulnerability impacts router models ≤See "References" section, and a fix is expected to be released by the vendor. Users are advised to monitor vendor advisories for updates.
The impact of this Command Injection vulnerability is severe. An attacker who successfully exploits CVE-2026-27650 can execute arbitrary OS commands on the router, effectively gaining complete control over the device. This includes the ability to modify router configurations, intercept network traffic, install malware, and potentially pivot to other devices on the network. The blast radius extends to all devices connected to the compromised router, making it a significant threat to home and small business networks. While no active exploitation has been publicly reported, the ease of command injection makes it a high-priority target for malicious actors.
CVE-2026-27650 was publicly disclosed on March 27, 2026. The vulnerability's ease of exploitation and the potential for widespread impact suggest a moderate probability of exploitation. Currently, there are no publicly available proof-of-concept exploits, but the nature of command injection vulnerabilities often makes them attractive targets for automated scanning and exploitation tools. Monitor security advisories and threat intelligence feeds for any indications of active campaigns targeting BUFFALO routers.
Exploit Status
EPSS
0.07% (22% percentile)
CISA SSVC
CVSS Vector
The primary mitigation for CVE-2026-27650 is to upgrade to a patched firmware version as soon as it becomes available from BUFFALO. Until a patch is available, consider implementing temporary workarounds such as restricting access to the router's web interface from untrusted networks. Carefully review router logs for any unusual activity or suspicious commands. Implement strong passwords and enable two-factor authentication where possible to reduce the risk of unauthorized access. After upgrading the firmware, confirm the vulnerability is resolved by attempting a command injection test (if feasible and safe) and verifying that the router's configuration remains intact.
Update your BUFFALO router firmware to the latest version provided by the manufacturer. Refer to the BUFFALO INC. website for updates and installation instructions.
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CVE-2026-27650 is a Command Injection vulnerability affecting BUFFALO Wi-Fi routers, allowing attackers to execute OS commands. It has a HIGH severity rating (CVSS: 8.8) and impacts models ≤See "References" section.
If you use a BUFFALO Wi-Fi router and your firmware version is ≤See "References" section, you are potentially affected. Check the vendor's advisory for a complete list of affected models.
Upgrade to the latest firmware version provided by BUFFALO as soon as it becomes available. Monitor router logs and implement strong security practices until the patch is applied.
While no active exploitation has been publicly confirmed, the vulnerability's nature makes it a potential target. Continuous monitoring is recommended.
Refer to the "References" section within the CVE description for links to the official BUFFALO security advisory and related resources.
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