High severity7.5NVD Advisory· Published Nov 30, 2020· Updated Jun 17, 2026
CVE-2020-16850
CVE-2020-16850
Description
Mitsubishi MELSEC iQ-R Series PLCs with firmware 49 allow an unauthenticated attacker to halt the industrial process by sending a crafted packet over the network. This denial of service attack exposes Improper Input Validation. After halting, physical access to the PLC is required in order to restore production, and the device state is lost. This is related to R04CPU, RJ71GF11-T2, R04CPU, and RJ71GF11-T2.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
21- Mitsubishi/MELSEC iQ-R Series PLCsdescription
- cpe:2.3:o:mitsubishielectric:r00cpu_firmware:*:*:*:*:*:*:*:*Range: <=20
- cpe:2.3:o:mitsubishielectric:r01cpu_firmware:*:*:*:*:*:*:*:*Range: <=20
- cpe:2.3:o:mitsubishielectric:r02cpu_firmware:*:*:*:*:*:*:*:*Range: <=20
- cpe:2.3:o:mitsubishielectric:r04cpu_firmware:*:*:*:*:*:*:*:*Range: <=52
- cpe:2.3:o:mitsubishielectric:r08cpu_firmware:*:*:*:*:*:*:*:*Range: <=52
- cpe:2.3:o:mitsubishielectric:r16cpu_firmware:*:*:*:*:*:*:*:*Range: <=52
- cpe:2.3:o:mitsubishielectric:r32cpu_firmware:*:*:*:*:*:*:*:*Range: <=52
- cpe:2.3:o:mitsubishielectric:r120cpu_firmware:*:*:*:*:*:*:*:*Range: <=52
- cpe:2.3:o:mitsubishielectric:r08sfcpu_firmware:*:*:*:*:*:*:*:*Range: <=22
- cpe:2.3:o:mitsubishielectric:r16sfcpu_firmware:*:*:*:*:*:*:*:*Range: <=22
- cpe:2.3:o:mitsubishielectric:r32sfcpu_firmware:*:*:*:*:*:*:*:*Range: <=22
- cpe:2.3:o:mitsubishielectric:r120sfcpu_firmware:*:*:*:*:*:*:*:*Range: <=22
- cpe:2.3:o:mitsubishielectric:r08pcpu_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:mitsubishielectric:r16pcpu_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:mitsubishielectric:r32pcpu_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:mitsubishielectric:r120pcpu_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:mitsubishielectric:r16mtcpu_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:mitsubishielectric:r32mtcpu_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:mitsubishielectric:r64mtcpu_firmware:*:*:*:*:*:*:*:*
- Range: = firmware 49
Patches
Vulnerability mechanics
References
2- blog.scadafence.com/vulnerability-in-mitsubishi-electric-melsec-iq-r-seriesnvdThird Party Advisory
- us-cert.cisa.gov/ics/advisories/icsa-20-282-02nvdThird Party AdvisoryUS Government Resource
News mentions
0No linked articles in our index yet.