CVE-2018-7843
A CWE-248: Uncaught Exception vulnerability exists in all versions of the Modicon M580, Modicon M340, Modicon Quantum, and Modicon Premium which could cause denial of service when reading memory blocks with an invalid data size or with an invalid data…
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (3.29%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
A CWE-248: Uncaught Exception vulnerability exists in all versions of the Modicon M580, Modicon M340, Modicon Quantum, and Modicon Premium which could cause denial of service when reading memory blocks with an invalid data size or with an invalid data offset in the controller over Modbus.
- CVSS 3.1
- 7.5 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 3.29% probability · 88th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-125
- 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
References
- https://www.schneider-electric.com/en/download/document/SEVD-2019-134-11/Vendor Advisory
- https://www.talosintelligence.com/vulnerability_reports/TALOS-2018-0738Exploit, Third Party Advisory
- https://www.schneider-electric.com/en/download/document/SEVD-2019-134-11/Vendor Advisory
- https://www.talosintelligence.com/vulnerability_reports/TALOS-2018-0738Exploit, Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.