CVE-2020-3330 : What You Need to Know
Learn about CVE-2020-3330, a critical vulnerability in Cisco RV110W Wireless-N VPN Firewall Firmware allowing remote attackers to take full control of devices. Find mitigation steps here.
A vulnerability in the Telnet service of Cisco Small Business RV110W Wireless-N VPN Firewall Routers could allow an unauthenticated, remote attacker to take full control of the device with a high-privileged account.
Understanding CVE-2020-3330
This CVE involves a critical vulnerability in Cisco RV110W Wireless-N VPN Firewall Firmware.
What is CVE-2020-3330?
The vulnerability allows a remote attacker to exploit a default and static password in a system account to gain full control of the affected device.
The Impact of CVE-2020-3330
The vulnerability has a CVSS base score of 9.8, indicating a critical severity level with high impacts on confidentiality, integrity, and availability.
Technical Details of CVE-2020-3330
This section provides detailed technical information about the vulnerability.
Vulnerability Description
The vulnerability in the Telnet service of Cisco RV110W Wireless-N VPN Firewall Firmware allows unauthenticated attackers to exploit a default and static password in a system account, leading to complete device compromise.
Affected Systems and Versions
- Product: Cisco RV110W Wireless-N VPN Firewall Firmware
- Vendor: Cisco
- Affected Version: n/a
Exploitation Mechanism
Attackers can exploit the vulnerability by using the default account to connect to the affected system, gaining full control over the device.
Mitigation and Prevention
Protecting systems from CVE-2020-3330 requires immediate actions and long-term security practices.
Immediate Steps to Take
- Disable Telnet service if not required for operations.
- Change default passwords to strong, unique ones.
- Implement network segmentation to limit access.
Long-Term Security Practices
- Regularly update firmware and software to patch vulnerabilities.
- Conduct security assessments and audits to identify weaknesses.
- Educate users on secure password practices and awareness of social engineering attacks.
Patching and Updates
Apply patches and updates provided by Cisco to address the vulnerability and enhance system security.