How severe is CVE-2025-11778?

CVE-2025-11778 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2025-11778 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (22nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-11778?

CVE-2025-11778 primarily affects Circutor Sge-plc1000 Firmware. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2025-11778?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

Does CVE-2025-11778 have an EU (EUVD) identifier?

Yes. CVE-2025-11778 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-200238.

When was CVE-2025-11778 published?

CVE-2025-11778 was published on 2025-12-02 and last updated on 2026-06-17.

CVE-2025-11778

CVE-2025-11778 is a critical-severity vulnerability in Circutor Sge-plc1000 Firmware with a CVSS 3.x base score of 9.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-122.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v4: 10.0
EPSS exploit prediction: 0% (22nd percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-200238
Weakness: CWE-122
Affected product: Circutor Sge-plc1000 Firmware
Published: 2025-12-02
Last modified: 2026-06-17

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.

Frequently asked questions

What is CVE-2025-11778?: 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.
How severe is CVE-2025-11778?: CVE-2025-11778 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2025-11778 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (22nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-11778?: CVE-2025-11778 primarily affects Circutor Sge-plc1000 Firmware. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2025-11778?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
Does CVE-2025-11778 have an EU (EUVD) identifier?: Yes. CVE-2025-11778 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-200238.
When was CVE-2025-11778 published?: CVE-2025-11778 was published on 2025-12-02 and last updated on 2026-06-17.

References

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

Affected products (2)

cpe:2.3:o:circutor:sge-plc1000_firmware:0.9.2:*:*:*:*:*:*:*
cpe:2.3:o:circutor:sge-plc50_firmware:0.9.2:*:*:*:*:*:*:*

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