CVE-2018-7759 7.5 high EPSS 1.3%
A buffer overflow vulnerability exists in Schneider Electric's Modicon M340, Modicon Premium, Modicon Quantum PLC, BMXNOR0200. The buffer overflow vulnerability is caused by the length of the source string specified (instead of the buffer size) as the number of bytes to be copied.
Severity
CVSS 3.0 7.5 high CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HEnable JavaScript to see the metric table and diagram.
EPSS 1.3% chance of exploitation in the next 30 days; higher than 70% of CVEs (scores of 2026-10-31)
CWE CWE-119
Published 2018-04-18
Modified 2026-06-17
Record from the NVD, synced 2026-10-19 Affected schneider-electric:140cpu31110_firmware schneider-electric:140cpu31110c_firmware schneider-electric:140cpu43412u_firmware schneider-electric:140cpu43412uc_firmware schneider-electric:140cpu65150_firmware schneider-electric:140cpu65150c_firmware schneider-electric:140cpu65160_firmware schneider-electric:140cpu65160c_firmware schneider-electric:140cpu65160s_firmware schneider-electric:140cpu65260_firmware schneider-electric:140cpu65260c_firmware schneider-electric:140cpu65860_firmware schneider-electric:140cpu65860c_firmware schneider-electric:bmxnor0200_firmware schneider-electric:bmxnor0200h_firmware schneider-electric:modicon_m340_bmxp341000_firmware schneider-electric:modicon_m340_bmxp341000h_firmware schneider-electric:modicon_m340_bmxp342000_firmware schneider-electric:modicon_m340_bmxp3420102_firmware schneider-electric:modicon_m340_bmxp3420102cl_firmware schneider-electric:modicon_m340_bmxp342020_firmware schneider-electric:modicon_m340_bmxp342020h_firmware schneider-electric:modicon_m340_bmxp3420302_firmware schneider-electric:modicon_m340_bmxp3420302cl_firmware schneider-electric:modicon_m340_bmxp3420302h_firmware schneider-electric:tsxh5724m_firmware schneider-electric:tsxh5724mc_firmware schneider-electric:tsxh5744m_firmware schneider-electric:tsxh5744mc_firmware schneider-electric:tsxp57104m_firmware schneider-electric:tsxp57104mc_firmware schneider-electric:tsxp57154m_firmware schneider-electric:tsxp57154mc_firmware schneider-electric:tsxp571634m_firmware schneider-electric:tsxp571634mc_firmware schneider-electric:tsxp57204m_firmware schneider-electric:tsxp57204mc_firmware schneider-electric:tsxp57254m_firmware schneider-electric:tsxp57254mc_firmware schneider-electric:tsxp572634m_firmware schneider-electric:tsxp572634mc_firmware schneider-electric:tsxp57304m_firmware schneider-electric:tsxp57304mc_firmware schneider-electric:tsxp57354m_firmware schneider-electric:tsxp57354mc_firmware schneider-electric:tsxp573634m_firmware schneider-electric:tsxp573634mc_firmware schneider-electric:tsxp57454m_firmware schneider-electric:tsxp57454mc_firmware schneider-electric:tsxp574634m_firmware References Check your stack JSON