CVE-2020-6989CWE-121

In Moxa PT-7528 series firmware, Version 4.0 or lower, and PT-7828 series firmware, Version 3.9 or lower, a buffer overflow in the web server allows remote…

published March 24, 2020

CVSS
—
EPSS
3%
Percentile
89.1
In the wild
Unconfirmed
What it is

⚠️ A sneaky buffer overflow is lurking in the Moxa PT-7528 and PT-7828 firmware! Attackers could use this to crash your system or even execute code remotely—yikes! 🔥 Think of it like a crowded restaurant kitchen where one chef knocks over a huge pot, spilling its contents everywhere. Suddenly, no one can get their orders out, and the whole operation grinds to a halt. In the worst-case scenario, an attacker can trigger a denial-of-service, leaving your network devices unresponsive. They could also execute arbitrary code, potentially compromising your entire system and leading to serious security breaches. That's absolutely devastating for any operational environment!

Put simply

Think of it like a crowded restaurant kitchen where one chef knocks over a huge pot, spilling its contents everywhere. Suddenly, no one can get their orders out, and the whole operation grinds to a halt. This vulnerability stems from a buffer overflow in the web server of Moxa's PT-7528 and PT-7828 series firmware, specifically in versions 4.0 and lower for the PT-7528 and 3.9 and lower for the PT-7828. This allows attackers to inject malicious payloads and disrupt service or execute unauthorized commands.

What to do

In the worst-case scenario, an attacker can trigger a denial-of-service, leaving your network devices unresponsive. They could also execute arbitrary code, potentially compromising your entire system and leading to serious security breaches. That's absolutely devastating for any operational environment! To mitigate this risk, update to the latest firmware versions immediately: PT-7528 to a version above 4.0, and PT-7828 above 3.9. Regularly audit your devices for updates, and consider implementing network segmentation to limit exposure. You've got this! Follow these steps and you'll be on your way to securing your network devices in no time! 🛡️

The record
Technical detail
CVSS
Not scored
CVSS v4.0
Not supplied
EPSS
0.03498 · 89.1th percentile
Weakness
CWE-121 · Stack-based Buffer Overflow
Published
2020-03-24T18:54Z
EPSS history
Timeline
  • 24 MAR 18:54Z
    In Moxa PT-7528 series firmware, Version 4.0 or lower, and PT-7828 series firmware, Version 3.9 or lower, a buffer overflow in the web server allows remote…
    cvelistv5