CVE-2025-11779: Stack-based buffer overflow vulnerability in CircutorSGE-PLC1000/SGE-PLC50 v9.0.2

This month

CRITICAL 9.8REMOTEMITIGATEMITIGATE

CVE-2025-11779 is a critical-severity flaw (CVSS 9.8) affecting sge-plc1000 firmware, sge-plc50 firmware. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Stack-based buffer overflow vulnerability in CircutorSGE-PLC1000/SGE-PLC50 v9.0.2. The 'SetLan' function is invoked when a new configuration is applied. This new configuration function is activated by a management web request, which can be invoked by a user when making changes to the 'index.cgi' web application. The parameters are not being sanitised, which could lead to command injection.

Why this priority

Critical severity
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	9.8 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	1.3% (top 30%)
CISA exploited list	No
Weakness	CWE-121
Published	2025-12-02
Last modified	2026-09-26

Publisher (CNA): Spanish National Cybersecurity Institute, S.A. (INCIBE) · Vendor: circutor

Last updated 2026-09-26 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2025-12-02 13:15 UTCPublished CVE record published
2026-09-26 00:10 UTCUpdated Record last modified

circutor sge-plc1000 firmware MITIGATE

Affected: 9.0.2

Fixed in: no fixed release known

Safe to downgrade to: a release before 9.0.2

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

circutor sge-plc50 firmware MITIGATE

Affected: 9.0.2

Fixed in: no fixed release known

Safe to downgrade to: a release before 9.0.2

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

Exact fixes by distribution

A distro patch exists: prefer upgrading over downgrading.

Fedora ELN · openjpeg · FIXED · 2.5.4-5.eln159 · FEDORA-2026-1a5f60f401 · source

sudo dnf upgrade --advisory=FEDORA-2026-1a5f60f401

Fedora 46 · trustedqsl · FIXED · 2.8.7-1.fc46 · FEDORA-2026-6b1bc90ebc · source

sudo dnf upgrade --advisory=FEDORA-2026-6b1bc90ebc

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2025-11779?

sge-plc1000 firmware: mitigate or apply the listed mitigation; sge-plc50 firmware: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2025-11779 being exploited?

CVE-2025-11779 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2025-11779 affect?

CVE-2025-11779 affects sge-plc1000 firmware, sge-plc50 firmware. Severity is critical (CVSS 9.8). Stack-based buffer overflow vulnerability in CircutorSGE-PLC1000/SGE-PLC50 v9.0.2. The 'SetLan' function is invoked when a new configuration is applied. This new configuration function is activated by a management web request, which can be

How urgent is CVE-2025-11779?

Priority 57/100. Critical severity; Remotely exploitable, no login, no user action

Related CVEs

CVE-2025-11783 CRITICAL 9.8 MITIGATE MITIGATE Stack-based buffer overflow vulnerability in Circutor SGE-PLC1000/SGE-PLC50 v9.0.2
CVE-2025-11782 CRITICAL 9.8 MITIGATE MITIGATE Stack-based buffer overflow vulnerability in Circutor SGE-PLC1000/SGE-PLC50 v9.0.2
CVE-2025-11784 CRITICAL 9.8 MITIGATE MITIGATE Stack-based buffer overflow vulnerability in Circutor SGE-PLC1000/SGE-PLC50 v9.0.2
CVE-2025-11786 CRITICAL 9.8 MITIGATE MITIGATE Stack-based buffer overflow vulnerability in Circutor SGE-PLC1000/SGE-PLC50 v9.0.2
CVE-2025-11787 HIGH 8.8 MITIGATE MITIGATE Command injection vulnerability in the operating system in Circutor SGE-PLC1000/SGE-PLC50 v9.0.2 through the '

References

← Back to latest CVEs