What’s Vulnerable › Vulnerabilities

CVE-2021-26777

• Severity: critical (CVSS 9.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 2.5% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2021-12-02 · updated 2026-06-17
• Weakness: CWE-120

Description

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.

Affected products

• CIRCUTOR COMPACT DC-S BASIC: 1.2.17

References

• https://github.com/Ell0/plc_concentrator_vulns/
• https://github.com/Ell0/plc_concentrator_vulns/

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