CybersecurityLinuxVulnerabilitySmall and Medium Businesses
New RefluXFS Linux flaw lets attackers gain root privileges
July 22, 2026
Back to all postsA critical vulnerability has been discovered in the RefluXFS Linux file system, affecting numerous systems and devices that use it. The bug, tracked as CVE-2023-26441, allows attackers to execute arbitrary code with root privileges when a specially crafted file is mounted. This threat poses a significant risk for Canadian businesses as Linux-based systems are widely used in SMB environments, often without proper security measures. The vulnerability can be exploited remotely, making it especially dangerous. To mitigate the risks, SMB owners and IT managers should prioritize updating their affected systems to a patched version of RefluXFS as soon as possible.
Source: BleepingComputer
CybersecurityLinuxVulnerabilitySmall and Medium Businesses
Concerned about this threat to your business?
We help Canadian SMBs deploy the controls discussed in this article. Free 30-minute assessment — no obligation.