How severe is CVE-2018-7761?

CVE-2018-7761 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-2018-7761 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (80th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2018-7761?

CVE-2018-7761 primarily affects Schneider-electric Bmxnor0200 Firmware. In total, 57 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2018-7761?

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.

When was CVE-2018-7761 published?

CVE-2018-7761 was published on 2018-04-18 and last updated on 2026-06-17.

CVE-2018-7761

CVE-2018-7761 is a critical-severity vulnerability in Schneider-electric Bmxnor0200 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-20.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 7.5
EPSS exploit prediction: 2% (80th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-20
Affected product: Schneider-electric Bmxnor0200 Firmware
Published: 2018-04-18
Last modified: 2026-06-17

Description

A vulnerability exists in the HTTP request parser in Schneider Electric's Modicon M340, Modicon Premium, Modicon Quantum PLC, BMXNOR0200 which could allow arbitrary code execution.

Frequently asked questions

What is CVE-2018-7761?: A vulnerability exists in the HTTP request parser in Schneider Electric's Modicon M340, Modicon Premium, Modicon Quantum PLC, BMXNOR0200 which could allow arbitrary code execution.
How severe is CVE-2018-7761?: CVE-2018-7761 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-2018-7761 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (80th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2018-7761?: CVE-2018-7761 primarily affects Schneider-electric Bmxnor0200 Firmware. In total, 57 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2018-7761?: 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.
When was CVE-2018-7761 published?: CVE-2018-7761 was published on 2018-04-18 and last updated on 2026-06-17.

References

https://www.schneider-electric.com/en/download/document/SEVD-2018-081-02/

Affected products (57)

cpe:2.3:o:schneider-electric:bmxnor0200_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:schneider-electric:bmxnor0200h_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:schneider-electric:140cpu65150_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:schneider-electric:140cpu31110_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:schneider-electric:140cpu43412u_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:schneider-electric:140cpu65160_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:schneider-electric:140cpu65260_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:schneider-electric:140cpu65860_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:schneider-electric:140cpu65160s_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:schneider-electric:140cpu65150c_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:schneider-electric:140cpu31110c_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:schneider-electric:140cpu43412uc_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:schneider-electric:140cpu65160c_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:schneider-electric:140cpu65260c_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:schneider-electric:140cpu65860c_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:schneider-electric:modicon_m340_bmxp341000_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:schneider-electric:modicon_m340_bmxp342000_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:schneider-electric:modicon_m340_bmxp3420102_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:schneider-electric:modicon_m340_bmxp3420102cl_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:schneider-electric:modicon_m340_bmxp342020_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:schneider-electric:modicon_m340_bmxp3420302_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:schneider-electric:modicon_m340_bmxp3420302cl_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:schneider-electric:modicon_m340_bmxp3420302h_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:schneider-electric:modicon_m340_bmxp342020h_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:schneider-electric:modicon_m340_bmxp341000h_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:schneider-electric:tsxh5724m_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:schneider-electric:tsxh5744m_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:schneider-electric:tsxp57104m_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:schneider-electric:tsxp57154m_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:schneider-electric:tsxp571634m_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:schneider-electric:tsxp57204m_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:schneider-electric:tsxp57254m_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:schneider-electric:tsxp572634m_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:schneider-electric:tsxp57304m_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:schneider-electric:tsxp57354m_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:schneider-electric:tsxp573634m_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:schneider-electric:tsxp57454m_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:schneider-electric:tsxp574634m_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:schneider-electric:tsxp575634m_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:schneider-electric:tsxp576634m_firmware:-:*:*:*:*:*:*:*

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