CVE-2021-27384CWE-788

A vulnerability has been identified in SIMATIC HMI Comfort Outdoor Panels V15 7\" & 15\" (incl

Critical · published May 12, 2021

CVSS v3.1
9.8
EPSS
3%
Percentile
85.0
In the wild
Unconfirmed
What it is

🚨 An out-of-bounds memory access in SmartVNC could let attackers run malicious code remotely, making your HMI panels a playground for cybercriminals! 🔥 Think of it like a restaurant where the kitchen is open to the public. If someone can slip in and change the ingredients without the chef knowing, they could serve a dish that’s not just bad but downright dangerous! 🍽️ This vulnerability could allow an attacker to execute arbitrary code on the affected devices, potentially compromising safety systems and operational control. Imagine an intruder gaining control over critical manufacturing processes or infrastructure—absolutely devastating!

Put simply

Think of it like a restaurant where the kitchen is open to the public. If someone can slip in and change the ingredients without the chef knowing, they could serve a dish that’s not just bad but downright dangerous! 🍽️ The SmartVNC vulnerability stems from incorrect handling of binary data streams in the device layout, leading to out-of-bounds memory access and allowing for potential remote code execution on affected HMI panels and runtime systems.

What to do

This vulnerability could allow an attacker to execute arbitrary code on the affected devices, potentially compromising safety systems and operational control. Imagine an intruder gaining control over critical manufacturing processes or infrastructure—absolutely devastating! Patch to versions V15.1 Update 6 or V16 Update 4 to close this critical gap immediately. Also, ensure that any connected networks are properly segmented to limit exposure and review your security policies related to remote access. You've got this! With prompt action, you'll secure your systems and maintain your hero status! 🛡️

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
CVSS v4.0
Not supplied
EPSS
0.02559 · 85.0th percentile
Weakness
CWE-788 · Access of Memory Location After End of Buffer
Published
2021-05-12T13:18Z
EPSS history
Timeline
  • 12 MAY 13:18Z
    A vulnerability has been identified in SIMATIC HMI Comfort Outdoor Panels V15 7\" & 15\" (incl
    cvelistv5