CVE-2025-11780: Stack-based buffer overflow vulnerability in Circutor SGE-PLC1000/SGE-PLC50 v9.0.2

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CRITICAL 9.8REMOTEMITIGATEMITIGATE

CVE-2025-11780 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 Circutor SGE-PLC1000/SGE-PLC50 v9.0.2. In the 'showMeterReport()' function, there is an unlimited user input that is copied to a fixed-size buffer via 'sprintf()'. The 'GetParameter(meter)' function retrieves the user input, which is directly incorporated into a buffer without size validation. An attacker can provide an excessively large input for the “meter” parameter.

Why this priority

Critical severity
Remotely exploitable, no login, no user action

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	9.8 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.3% (top 75%)
CISA exploited list	No
Weakness	CWE-120
Published	2025-12-02
Last modified	2026-06-17

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

Last updated 2026-06-17 · 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
2026-06-17 08:31 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.

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-2025-11780?

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-2025-11780 being exploited?

CVE-2025-11780 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-2025-11780 affect?

CVE-2025-11780 affects sge-plc1000 firmware, sge-plc50 firmware. Severity is critical (CVSS 9.8). Stack-based buffer overflow vulnerability in Circutor SGE-PLC1000/SGE-PLC50 v9.0.2. In the 'showMeterReport()' function, there is an unlimited user input that is copied to a fixed-size buffer via 'sprintf()'. The 'GetParameter(meter)' funct

How urgent is CVE-2025-11780?

Priority 46/100. Critical severity; Remotely exploitable, no login, no user action

Related CVEs

CVE-2025-11779 CRITICAL 9.8 MITIGATE MITIGATE Stack-based buffer overflow vulnerability in CircutorSGE-PLC1000/SGE-PLC50 v9.0.2
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

References

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