CVE-2025-2523CWE-191

Lack of buffer clearing before reuse may result in incorrect system behavior.

Critical · published July 10, 2025

CVSS v3.1
9.4
EPSS
1%
Percentile
55.8
In the wild
Unconfirmed
What it is

🚨 An integer underflow in Honeywell's Experion PKS could turn a simple subtraction into a whole world of trouble! 🔥 Think of it like a recipe where the chef miscalculates ingredients — a pinch too little salt can ruin a whole dish, just like this vulnerability can lead to unexpected remote code execution through communication channel manipulation. If exploited, this vulnerability could allow an attacker to manipulate communication channels, potentially leading to devastating outcomes like unauthorized access and full control over critical systems. This isn't just a breach; it could paralyze operations at the worst possible moment!

Put simply

Think of it like a recipe where the chef miscalculates ingredients — a pinch too little salt can ruin a whole dish, just like this vulnerability can lead to unexpected remote code execution through communication channel manipulation. The integer underflow in Honeywell's Control Data Access (CDA) component allows attackers to exploit faulty calculations during communication protocols, leading to remote code execution.

What to do

If exploited, this vulnerability could allow an attacker to manipulate communication channels, potentially leading to devastating outcomes like unauthorized access and full control over critical systems. This isn't just a breach; it could paralyze operations at the worst possible moment! Honeywell strongly recommends upgrading to the latest versions: Experion PKS: 520.2 TCU9 HF1 or 530.1 TCU3 HF1, and OneWireless: 322.5 or 331.1 without delay. Don't let outdated systems put you at risk! You’ve got this! Follow these steps and you’ll have your systems secured in no time! 🛡️

The record
Technical detail
CVSS v3.1
9.4 · CRITICAL
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.00790 · 55.8th percentile
Weakness
CWE-191 · Integer Underflow (Wrap or Wraparound)
Published
2025-07-10T20:15Z
EPSS history
Timeline
  • 10 JUL 20:15Z
    Lack of buffer clearing before reuse may result in incorrect system behavior.
    cvelistv5