CVE-2021-26777

Buffer overflow vulnerability in function SetFirewall in index.cgi in CIRCUTOR COMPACT DC-S BASIC smart metering concentrator Firwmare version CIR_CDC_v1.2.17…

published December 2, 2021

CVSS
—
EPSS
3%
Percentile
84.8
In the wild
Unconfirmed
What it is

⚠️ This vulnerability in the CIRCUTOR COMPACT DC-S BASIC firmware can allow attackers to execute arbitrary code — think of it as a sneaky intruder slipping into your home while you’re distracted! 🔑 Imagine a package delivery service that doesn't check the contents of delivered packages. If an intruder were to slip in a dangerous item disguised as a normal delivery, they could wreak havoc inside your home without anyone noticing! With this buffer overflow vulnerability, an attacker could potentially execute arbitrary code on the device, compromising its functionality and opening the door to further attacks. This could lead to unauthorized access to sensitive data or even control over the smart metering system. The implications can be significant, especially in environments that rely on these systems for energy management.

Put simply

Imagine a package delivery service that doesn't check the contents of delivered packages. If an intruder were to slip in a dangerous item disguised as a normal delivery, they could wreak havoc inside your home without anyone noticing! The vulnerability resides in the 'SetFirewall' function within 'index.cgi' of the CIRCUTOR COMPACT DC-S BASIC firmware version CIR_CDC_v1.2.17. If exploited, it allows attackers to manipulate memory allocation, leading to arbitrary code execution.

What to do

With this buffer overflow vulnerability, an attacker could potentially execute arbitrary code on the device, compromising its functionality and opening the door to further attacks. This could lead to unauthorized access to sensitive data or even control over the smart metering system. The implications can be significant, especially in environments that rely on these systems for energy management. To protect your systems, immediately update the firmware to the latest version that addresses this vulnerability. Regularly review your firewall settings and consider implementing additional security measures, such as intrusion detection systems. Make sure to stay informed about updates from the vendor! You've got this! By taking these steps, you can keep your systems secure and maintain your security hero status! 🛡️

The record
Technical detail
CVSS
Not scored
CVSS v4.0
Not supplied
EPSS
0.02526 · 84.8th percentile
Published
2021-12-02T03:26Z
EPSS history
Timeline
  • 02 DEC 03:26Z
    Buffer overflow vulnerability in function SetFirewall in index.cgi in CIRCUTOR COMPACT DC-S BASIC smart metering concentrator Firwmare version CIR_CDC_v1.2.17…
    cvelistv5