high7.5
CVE-2021-20596
NULL Pointer Dereference in MELSEC-F Series FX3U-ENET firmware version 1.14 and prior, FX3U-ENET-L firmware version 1.14 and prior and FX3U-ENET-P502 firmware …
Impact
NULL Pointer Dereference in MELSEC-F Series FX3U-ENET firmware version 1.14 and prior, FX3U-ENET-L firmware version 1.14 and prior and FX3U-ENET-P502 firmware version 1.14 and prior allows a remote unauthenticated attacker to cause a DoS condition in communication by sending specially crafted packets. Control by MELSEC-F series PLC is not affected and system reset is required for recovery.
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Mitsubishielectric | Fx3u-Enet-L Firmware | through 1.14 |
| Mitsubishielectric | Fx3u-Enet-P502 Firmware | through 1.14 |
| Mitsubishielectric | Fx3u-Enet Firmware | through 1.14 |
Weakness classification
References
- NVD record
- CVE.org record
- https://jvn.jp/vu/JVNVU94348759/index.html
- https://us-cert.cisa.gov/ics/advisories/icsa-21-201-01
- https://www.mitsubishielectric.com/en/psirt/vulnerability/pdf/2021-006_en.pdf
- https://jvn.jp/vu/JVNVU94348759/index.html
- https://us-cert.cisa.gov/ics/advisories/icsa-21-201-01
- https://www.mitsubishielectric.com/en/psirt/vulnerability/pdf/2021-006_en.pdf