CVE-2021-26777

Severity Score

9.8

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

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, allows attackers to execute arbitrary code.

Una vulnerabilidad de desbordamiento de búfer en la función SetFirewall en el archivo index.cgi en el concentrador de medición inteligente CIRCUTOR COMPACT DC-S BASIC versión CIR_CDC_v1.2.17, permite a atacantes ejecutar código arbitrario

*Credits: N/A

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Attack Vector

Network

Attack Complexity

Low

Authentication

None

Confidentiality

Complete

Integrity

Complete

Availability

Complete

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2021-02-05 CVE Reserved
2021-12-02 CVE Published
2024-08-03 CVE Updated
2024-08-03 First Exploit
2024-12-17 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date

CWE

CWE-120: Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')

CAPEC

References (1)

URL	Tag	Source

URL	Date	SRC
https://github.com/Ell0/plc_concentrator_vulns	2024-08-03

URL	Date	SRC

URL	Date	SRC

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Circutor Search vendor "Circutor"	Compact Dc-s Basic Firmware Search vendor "Circutor" for product "Compact Dc-s Basic Firmware"	1.2.17 Search vendor "Circutor" for product "Compact Dc-s Basic Firmware" and version "1.2.17"	-	Affected	in	Circutor Search vendor "Circutor"	Compact Dc-s Basic Search vendor "Circutor" for product "Compact Dc-s Basic"	-	-	Safe