PT-2021-17131 · Circutor · Circutor Compact Dc-S Basic

Published 2021-12-02 · Updated 2021-12-06 · CVE-2021-26777

Positive Technologies (AI Summary)

CVSS v2.0

10

Critical

Base vector

AV:N/AC:L/Au:N/C:C/I:C/A:C

Name of the Vulnerable Software and Affected Versions CIRCUTOR COMPACT DC-S BASIC smart metering concentrator version CIR CDC v1.2.17

Description The issue is related to a buffer overflow vulnerability in the SetFirewall function within index.cgi of the CIRCUTOR COMPACT DC-S BASIC smart metering concentrator. This vulnerability allows attackers to execute arbitrary code.

Recommendations For version CIR CDC v1.2.17, as a temporary workaround, consider disabling the SetFirewall function in index.cgi until a patch is available. Restrict access to the index.cgi to minimize the risk of exploitation. At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

Buffer Overflow

Weakness Enumeration

CWE-120

Related Identifiers

CVE-2021-26777

Affected Products

Circutor Compact Dc-S Basic

References · 4

• 🔥 https://github.com/Ell0/plc_concentrator_vulns · Exploit
• https://osv.dev/vulnerability/CVE-2021-26777 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-26777 · Security Note
• https://t.me/cibsecurity/33244 · Telegram Post