CVE-2021-26777

PoC —

CVSS 3.1

9.8 critical

EPSS

2%p83

Published

Dec 2, 2021 (Dec 2, 2021)

Modified

Jun 17, 2026

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.

Vendors: circutor
Products: compact dc-s basic firmware
Weakness: CWE-120
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

NVD CVE.org GitHub PoCs EPSS (2.4%)

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