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Vulnerability record · CVE-2025-11778 · published 2 December 2025

CVE-2025-11778: Circutor sge-plc1000 firmware heap-based buffer overflow vulnerability

Circutor · Sge Plc1000 Firmware

Stack-based buffer overflow in Circutor SGE-PLC1000/SGE-PLC50 v0.9.2. This vulnerability allows an attacker to remotely exploit memory corruption through the 'read_packet()' function of the TACACSPLUS implementation.

10.0 CVSS 4.0 Critical EPSS 0.35% · top 73.9% CWE-122 · Heap-based buffer overflow
10.0CVSS 4.0 base score
0.35%EPSS exploitation probability, 30 days
NoNot in CISA KEV
2Affected product versions listed by NVD
1References
17 Jun 2026Last modified by NVD

Description

Stack-based buffer overflow in Circutor SGE-PLC1000/SGE-PLC50 v0.9.2. This vulnerability allows an attacker to remotely exploit memory corruption through the 'read_packet()' function of the TACACSPLUS implementation.

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:

Affected products

2 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://www.incibe.es/en/incibe-cert/notices/aviso-sci/multiple-vulnerabilities-circutor-products-0 Third Party Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

9.8CVE-2021-33841Circutor sge-plc1000 firmware os command injection vulnerabilitySGE-PLC1000 device, in its 0.9.2b firmware version, does not handle some requests correctly, allowing a remote attacker to inject code into the opera…EPSS 2.2%9.4CVE-2025-11779Circutor sge-plc1000 firmware stack-based buffer overflow vulnerabilityStack-based buffer overflow vulnerability in CircutorSGE-PLC1000/SGE-PLC50 v9.0.2. The 'SetLan' function is invoked when a new configuration is appli…EPSS 1.3%8.8CVE-2021-33842Circutor sge-plc1000 firmware reliance on cookies without validation vulnerabilityImproper Authentication vulnerability in the cookie parameter of Circutor SGE-PLC1000 firmware version 0.9.2b allows an attacker to perform operation…EPSS 0.43%8.7CVE-2025-11780Circutor sge-plc1000 firmware classic buffer overflow vulnerabilityStack-based buffer overflow vulnerability in Circutor SGE-PLC1000/SGE-PLC50 v9.0.2. In the 'showMeterReport()' function, there is an unlimited user i…EPSS 0.33%8.6CVE-2025-11781Circutor sge-plc1000 firmware vulnerabilityUse of hardcoded cryptographic keys in Circutor SGE-PLC1000/SGE-PLC50 v9.0.2. The affected firmware contains a hardcoded static authentication key. A…EPSS 0.14%8.5CVE-2025-11788Circutor sge-plc1000 firmware heap-based buffer overflow vulnerabilityHeap-based buffer overflow vulnerability in Circutor SGE-PLC1000/SGE-PLC50 v9.0.2. In the 'ShowSupervisorParameters()' function, there is an unlimite…EPSS 0.33%8.5CVE-2025-11785Circutor sge-plc1000 firmware stack-based buffer overflow vulnerabilityStack-based buffer overflow vulnerability in Circutor SGE-PLC1000/SGE-PLC50 v9.0.2. In the 'ShowMeterPasswords()' function, there is an unlimited use…EPSS 0.37%8.5CVE-2025-11786Circutor sge-plc1000 firmware stack-based buffer overflow vulnerabilityStack-based buffer overflow vulnerability in Circutor SGE-PLC1000/SGE-PLC50 v9.0.2. In the 'SetUserPassword()' function, the 'newPassword' parameter …EPSS 0.37%

Source: NIST National Vulnerability Database (record CVE-2025-11778), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.