CVE-2025-11782: Stack-based buffer overflow vulnerability in Circutor SGE-PLC1000/SGE-PLC50 v9.0.2

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CRITICAL 9.8REMOTEMITIGATEMITIGATE

CVE-2025-11782 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. The 'ShowDownload()' function uses “sprintf()” to format a string that includes the user-controlled input of 'GetParameter(meter)' in the fixed-size buffer 'acStack_4c' (64 bytes) without checking the length. An attacker can provide an excessively long value for the 'meter' parameter that exceeds the 64-byte buffer size.

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	0.4% (top 69%)
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.

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-2025-11782?

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-2025-11782 being exploited?

CVE-2025-11782 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-2025-11782 affect?

CVE-2025-11782 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. The 'ShowDownload()' function uses “sprintf()” to format a string that includes the user-controlled input of 'GetParameter(meter)' in the fixed-size buffer

How urgent is CVE-2025-11782?

Priority 47/100. 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-2025-11784 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

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