CVE-2019-3951CWE-121

Advantech WebAccess before 8.4.3 allows unauthenticated remote attackers to execute arbitrary code or cause a denial of service (memory corruption) due to a…

published December 12, 2019

CVSS
—
EPSS
4%
Percentile
89.4
In the wild
Unconfirmed
What it is

🚨 A stack-based buffer overflow lurking in Advantech WebAccess can let an attacker run wild with arbitrary code execution—no authentication required! 🤯 Think of it as a restaurant where anyone can walk into the kitchen and throw a random ingredient into the soup pot without a chef checking their credentials—deliciously dangerous! If exploited, an attacker could execute any code they choose, leading to full control over the affected system or even crashing it completely—absolutely devastating! This could open the door to data breaches or service outages, making it a serious concern.

Put simply

Think of it as a restaurant where anyone can walk into the kitchen and throw a random ingredient into the soup pot without a chef checking their credentials—deliciously dangerous! The vulnerability, found in Advantech WebAccess before version 8.4.3, occurs due to inadequate handling of IOCTL 70533 RPC messages that result in memory corruption. This allows unauthorized remote attackers to execute arbitrary code or cause denial of service.

What to do

If exploited, an attacker could execute any code they choose, leading to full control over the affected system or even crashing it completely—absolutely devastating! This could open the door to data breaches or service outages, making it a serious concern. Update your Advantech WebAccess to version 8.4.3 or later immediately to mitigate this risk. It’s also a good idea to audit your system for any potential exposure and ensure proper network protections are in place. You've got this! With the right updates and precautions, you'll have your system secured in no time! 🛡️

The record
Technical detail
CVSS
Not scored
CVSS v4.0
Not supplied
EPSS
0.03610 · 89.4th percentile
Weakness
CWE-121 · Stack-based Buffer Overflow
Published
2019-12-12T20:32Z
EPSS history
Timeline
  • 12 DEC 20:32Z
    Advantech WebAccess before 8.4.3 allows unauthenticated remote attackers to execute arbitrary code or cause a denial of service (memory corruption) due to a…
    cvelistv5