CVE-2021-38397CWE-434

Honeywell Experion PKS and ACE Controllers Unrestricted Upload of File with Dangerous Type

Critical · published October 28, 2022

CVSS v3.1
10.0
EPSS
1%
Percentile
62.2
In the wild
Unconfirmed
What it is

🚨 An unrestricted file upload vulnerability in Honeywell's controllers could let attackers execute arbitrary code with just one crafty file! 🔥 Think of it like a sneaky employee who can walk into a secure server room with a delivery box that no one checks. If they slip in a malicious script, they now have access to everything inside! An attacker could exploit this vulnerability to run any code they choose, potentially leading to severe disruptions or even a complete denial-of-service condition for the system. This means critical operations could come to a grinding halt, causing havoc and significant financial loss.

Put simply

Think of it like a sneaky employee who can walk into a secure server room with a delivery box that no one checks. If they slip in a malicious script, they now have access to everything inside! The vulnerability allows for unrestricted file uploads on Honeywell Experion PKS C200, C200E, C300, and ACE controllers, enabling remote code execution via crafted files that the system fails to validate properly.

What to do

An attacker could exploit this vulnerability to run any code they choose, potentially leading to severe disruptions or even a complete denial-of-service condition for the system. This means critical operations could come to a grinding halt, causing havoc and significant financial loss. Immediately patch the affected controllers to the latest version provided by Honeywell. Review upload validation processes and implement strict file type checks to prevent unauthorized code from executing. Regularly audit your systems to ensure compliance with best security practices. You've got this! By taking these steps, you can protect your operations and ensure your systems run smoothly! 🛡️

The record
Technical detail
CVSS v3.1
10.0 · CRITICAL
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.00990 · 62.2th percentile
Weakness
CWE-434 · Unrestricted Upload of File with Dangerous Type
Published
2022-10-28T01:21Z
EPSS history
Timeline
  • 28 OCT 01:21Z
    Honeywell Experion PKS and ACE Controllers Unrestricted Upload of File with Dangerous Type
    cvelistv5