CVE-2021-22791
A CWE-787: Out-of-bounds Write vulnerability that could cause a Denial of Service on the Modicon PLC controller / simulator when updating the controller application with a specially crafted project file exists in Modicon M580 CPU (part numbers BMEP* and…
Does this matter?
Lower severity and a low EPSS score (0.84%). Track it; it rarely justifies an emergency change on its own.
Description
A CWE-787: Out-of-bounds Write vulnerability that could cause a Denial of Service on the Modicon PLC controller / simulator when updating the controller application with a specially crafted project file exists in Modicon M580 CPU (part numbers BMEP* and BMEH*, all versions), Modicon M340 CPU (part numbers BMXP34*, all versions), Modicon MC80 (part numbers BMKC80*, all versions), Modicon Momentum Ethernet CPU (part numbers 171CBU*, all versions), PLC Simulator for EcoStruxureª Control Expert, including all Unity Pro versions (former name of EcoStruxureª Control Expert, all versions), PLC Simulator for EcoStruxureª Process Expert including all HDCS versions (former name of EcoStruxureª Process Expert, all versions), Modicon Quantum CPU (part numbers 140CPU*, all versions), Modicon Premium CPU (part numbers TSXP5*, all versions).
- CVSS 3.1
- 6.5 MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 0.84% probability · 56th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-787
- Affected
- schneider-electric/modicon m340 bmxp341000 · schneider-electric/modicon m340 bmxp342010 · schneider-electric/modicon m340 bmxp342020 · schneider-electric/modicon m340 bmxp342030 · schneider-electric/modicon m580 bmeh582040 · schneider-electric/modicon m580 bmeh582040c · schneider-electric/modicon m580 bmeh582040s · schneider-electric/modicon m580 bmeh584040 · schneider-electric/modicon m580 bmeh584040c · schneider-electric/modicon m580 bmeh584040s · schneider-electric/modicon m580 bmeh586040 · schneider-electric/modicon m580 bmeh586040c · schneider-electric/modicon m580 bmeh586040s · schneider-electric/modicon m580 bmep581020 · schneider-electric/modicon m580 bmep581020h · schneider-electric/modicon m580 bmep582020 · schneider-electric/modicon m580 bmep582020h · schneider-electric/modicon m580 bmep582040 · schneider-electric/modicon m580 bmep582040h · schneider-electric/modicon m580 bmep582040s · +29 more
- Source
- cybersecurity@se.com
References
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.