By Naeem Mehboob
ISLAMABAD: Pakistan’s National Cyber Emergency Response Team (National CERT) has issued a cybersecurity advisory warning public and private sector organisations about a serious security vulnerability in TeamViewer, a widely used software application for remote computer access and technical support.
According to the advisory, versions of TeamViewer older than 15.83 may be vulnerable to security risks that could potentially allow attackers to execute malicious code, crash computer systems or gain unauthorised control over affected devices.
The reported vulnerability raises concerns for organisations and individuals relying on remote access tools to manage computers, servers and other digital infrastructure. Users of TeamViewer on Windows, Linux and macOS systems have been advised to take immediate preventive measures to reduce their exposure to potential cyberattacks.
National CERT has recommended updating TeamViewer to version 15.83 or the latest available release. Organisations have also been urged to review installations across their computer systems, servers and remote-support infrastructure to identify outdated software and ensure that security updates are applied promptly.
The advisory further recommends restricting remote access to authorised users and disabling unnecessary connections. Users should verify the identity of the other party before accepting remote sessions and exercise caution when connecting to unfamiliar or untrusted computers.
Organisations have also been advised to continuously monitor TeamViewer connections for suspicious activity, unusual access attempts and other potential indicators of compromise.
Where an immediate security update is not possible, institutions should consider blocking untrusted remote connections and applying additional access restrictions. In the event of a suspected cyberattack, remote access to the affected device should be restricted or temporarily disabled to help prevent further unauthorised activity.
Cybersecurity vulnerabilities in remote-access software can expose organisations to risks involving sensitive information, operational systems and network security. Remote access tools, while essential for technical support and system administration, can also provide an entry point for attackers if they are not properly updated and secured.
