CVE-2018-7847
A CWE-284: Improper Access Control vulnerability exists in all versions of the Modicon M580, Modicon M340, Modicon Quantum, and Modicon Premium which could cause denial of service or potential code execution by overwriting configuration settings of the…
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (3.81%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
A CWE-284: Improper Access Control vulnerability exists in all versions of the Modicon M580, Modicon M340, Modicon Quantum, and Modicon Premium which could cause denial of service or potential code execution by overwriting configuration settings of the controller over Modbus.
- 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
- 3.81% probability · 90th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-287
- 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 3.8% since 27 October 2026; no change recorded yet. 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-2018-0742Exploit, Third Party Advisory
- https://www.talosintelligence.com/vulnerability_reports/TALOS-2018-0743Third Party Advisory
- https://www.schneider-electric.com/en/download/document/SEVD-2019-134-11/Vendor Advisory
- https://www.talosintelligence.com/vulnerability_reports/TALOS-2018-0742Exploit, Third Party Advisory
- https://www.talosintelligence.com/vulnerability_reports/TALOS-2018-0743Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.