CVE-2022-26937

Windows Network File System Remote Code Execution Vulnerability

Critical · published May 10, 2022

Patch now

High probability of exploitation

CVSS calls it critical at 9.8. It sits in the 99.5th percentile for exploit probability.

CVSS v3.1
9.8
EPSS
76%
Percentile
99.5
In the wild
Unconfirmed
What it is

🔥 A single flaw in Windows Network File System can lead to full remote code execution! Imagine an intruder slipping a malicious package right through your digital door — it’s that simple! Think of this like a hotel receptionist who accepts room bookings without verifying if the guests are on the list — any malicious actor could check in and wreak havoc in your system. If exploited, an attacker could execute arbitrary code on the affected system, potentially gaining complete control. This means they could steal sensitive information, manipulate files, or even turn the system into a launchpad for further attacks. The implications could be absolutely devastating!

Put simply

Think of this like a hotel receptionist who accepts room bookings without verifying if the guests are on the list — any malicious actor could check in and wreak havoc in your system. This vulnerability allows attackers to send specially crafted requests to the Windows Network File System, triggering remote code execution without proper authentication checks.

What to do

If exploited, an attacker could execute arbitrary code on the affected system, potentially gaining complete control. This means they could steal sensitive information, manipulate files, or even turn the system into a launchpad for further attacks. The implications could be absolutely devastating! Immediately patch your systems to the latest updates provided by Microsoft. Ensure that any unnecessary services related to the Network File System are disabled, and consider implementing additional network segmentation to limit exposure. Regularly review your security policies and access controls to minimize risk. You've got this! By taking these steps, you're one step closer to locking down your systems. 🛡️

The record
Technical detail
CVSS v3.1
9.8 · CRITICAL
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C
CVSS v4.0
Not supplied
EPSS
0.75974 · 99.5th percentile
Published
2022-05-10T20:33Z
EPSS history
Timeline
  • 10 MAY 20:33Z
    Windows Network File System Remote Code Execution Vulnerability
    cvelistv5