Critical vulnerability discovered in Helix Core Server could give full system control to hackers

Code on screen
(Image credit: Shutterstock)

Four vulnerabilities have been discovered by Microsoft in the Perforce Helix Core Server, with one of them giving the ability for an intruder to remotely execute commands from the ‘LocalSystem’ account.

Helix Core Server offers a single location for storage and access to digital content, often used to store code, and allows an enhanced workflow by providing multiple users access to the same file content and its history.

The software is used by Microsoft’s game developers, and the vulnerabilities were discovered during a security review of the product. It is widely used across a range of other sectors, including government, military, and technology.

 High scores across the board

Three of the vulnerabilities received a CVSS score of 7.5, and involve using either remote commands or RPC header abuse to cause a denial of service (DoS). However, the most dangerous vulnerability received a CVSS score of 9.8 and a ‘critical’ rating, as the vulnerability allows threat actors to execute code remotely as the LocalSystem user.

This is particularly dangerous as the LocalSystem user is primarily used to execute system functions, and has privileged access to system files and other sensitive resources, meaning that if this vulnerability were to be successfully exploited it could surrender complete control of the targeted system.

Moreover, this vulnerability also allows threat actors to install backdoors giving them the opportunity to access systems at a later date to steal sensitive information or plan a ransomware attack.

The full list of vulnerabilities as summarized on the NIST National Vulnerability Database is:

  • CVE-2023-5759 (CVSS score 7.5): Unauthenticated (DoS) via RPC header abuse. 
  • CVE-2023-45849 (CVSS score 9.8): Unauthenticated remote code execution as LocalSystem. 
  • CVE-2023-35767 (CVSS score 7.5): Unauthenticated DoS via remote command. 
  • CVE-2023-45319 (CVSS score 7.5): Unauthenticated DoS via remote command. 

Helix Core Server users can upgrade to the latest version, 2023.1/2513900, to protect themselves from this vulnerability, and Perforce also offered a number of security recommendations in this security guide.

Via BleepingComputer

More from TechRadar Pro

Benedict Collins
Staff Writer (Security)

Benedict Collins is a Staff Writer at TechRadar Pro covering privacy and security. Before settling into journalism he worked as a Livestream Production Manager, covering games in the National Ice Hockey League for 5 years and contributing heavily to the advancement of livestreaming within the league. Benedict is mainly focused on security issues such as phishing, malware, and cyber criminal activity, but he also likes to draw on his knowledge of geopolitics and international relations to understand the motives and consequences of state-sponsored cyber attacks.


He has a MA in Security, Intelligence and Diplomacy, alongside a BA in Politics with Journalism, both from the University of Buckingham. His masters dissertation, titled 'Arms sales as a foreign policy tool,' argues that the export of weapon systems has been an integral part of the diplomatic toolkit used by the US, Russia and China since 1945. Benedict has also written about NATO's role in the era of hybrid warfare, the influence of interest groups on US foreign policy, and how reputational insecurity can contribute to the misuse of intelligence.


Outside of work Ben follows many sports; most notably ice hockey and rugby. When not running or climbing, Ben can most often be found deep in the shrubbery of a pub garden.