CVE-2018-7842
A CWE-290: Authentication Bypass by Spoofing vulnerability exists in all versions of the Modicon M580, Modicon M340, Modicon Quantum, and Modicon Premium which could cause an elevation of privilege by conducting a brute force attack on Modbus parameters…
Does this matter?
EPSS puts the probability of exploitation in the next 30 days at 35.0%, higher than 98% of all known CVEs. Patch or mitigate before the next change window.
Description
A CWE-290: Authentication Bypass by Spoofing vulnerability exists in all versions of the Modicon M580, Modicon M340, Modicon Quantum, and Modicon Premium which could cause an elevation of privilege by conducting a brute force attack on Modbus parameters sent to the controller.
- CVSS 3.1
- 9.8 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 35.04% probability · 98th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-290
- Affected
- schneider-electric/modicon m580 firmware · schneider-electric/modicon m340 firmware · schneider-electric/modicon quantum firmware · schneider-electric/modicon premium firmware
- Source
- cybersecurity@se.com
EPSS 35.0% since 27 October 2026; no change recorded yet. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- https://www.schneider-electric.com/en/download/document/SEVD-2019-134-11/Vendor Advisory
- https://www.talosintelligence.com/vulnerability_reports/TALOS-2018-0741Exploit, Third Party Advisory
- https://www.schneider-electric.com/en/download/document/SEVD-2019-134-11/Vendor Advisory
- https://www.talosintelligence.com/vulnerability_reports/TALOS-2018-0741Exploit, Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.