CVE-2017-12739

An issue was discovered on Siemens SICAM RTUs SM-2556 COM Modules with the firmware variants ENOS00, ERAC00, ETA2, ETLS00, MODi00, and DNPi00

published November 15, 2017

CVSS
—
EPSS
6%
Percentile
92.9
In the wild
Unconfirmed
What it is

🚨 Unauthenticated remote access? You bet! Attackers can execute arbitrary code on Siemens SICAM RTUs SM-2556 COM Modules, thanks to an oversight on their web server. 🔥 Think of this like a hotel with a lobby door that anyone can walk through — no keycard required. Once inside, a rogue guest could rearrange the front desk, causing chaos without ever being checked in! An attacker could gain full control of the device, leading to potentially devastating consequences like service disruption, unauthorized data manipulation, or even severe operational impacts on critical infrastructure.

Put simply

Think of this like a hotel with a lobby door that anyone can walk through — no keycard required. Once inside, a rogue guest could rearrange the front desk, causing chaos without ever being checked in! This vulnerability exists because the integrated web server on the affected modules allows unauthenticated access to execute arbitrary code, effectively bypassing normal security measures.

What to do

An attacker could gain full control of the device, leading to potentially devastating consequences like service disruption, unauthorized data manipulation, or even severe operational impacts on critical infrastructure. To protect against this vulnerability, ensure your firmware is updated to a patched version provided by Siemens. If your device is still running the affected firmware variants, it's crucial to restrict external access to the web server and regularly audit network configurations. You can tackle this! Stay proactive with your updates and configurations, and you’ll keep your systems safe! 🛡️

The record
Technical detail
CVSS
Not scored
CVSS v4.0
Not supplied
EPSS
0.05646 · 92.9th percentile
Published
2017-11-15T08:00Z
EPSS history
Timeline
  • 15 NOV 08:00Z
    An issue was discovered on Siemens SICAM RTUs SM-2556 COM Modules with the firmware variants ENOS00, ERAC00, ETA2, ETLS00, MODi00, and DNPi00
    cvelistv5