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Vulnerability · Published Dec 2, 2025 · Assigned by INCIBE

CVE-2025-11781Use of hardcoded cryptographic keys in Circutor SGE-PLC1000/SGE-PLC50

High 8.6

In plain English

A high-severity security flaw in Circutor from SGE-PLC1000 SGE-PLC50. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.1% (higher than 4% of all known vulnerabilities).

Severity (CVSS 4.0)8.6High
Exploit odds (30 days)0.1%top 96.1% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known

Official description

Use of hardcoded cryptographic keys in Circutor SGE-PLC1000/SGE-PLC50 v9.0.2. The affected firmware contains a hardcoded static authentication key. An attacker with local access to the device can extract this key (e.g., by analysing the firmware image or memory dump) and create valid firmware update packages. This bypasses all intended access controls and grants full administrative privileges.

Affected products (as reported)

VendorProductVersions
SGE-PLC1000 SGE-PLC50 Circutor 9.0.2

Weakness: CWE-321 · Vector: CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

References