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 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.

CVSS v3 7.5 HIGH
CVSS v2.0 5.0 MEDIUM

7.5^/10

CVSS v3 : HIGH

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

5.0^/10

CVSS v2.0 : MEDIUM

Vector : AV:N/AC:L/Au:N/C:N/I:N/A:P

Exploitability : 10.0 / Impact : 2.9

Access Vector NETWORK

Access Complexity LOW

Authentication NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact PARTIAL

References

Link	Resource
https://jvn.jp/vu/JVNVU94348759/index.html	Patch Third Party Advisory
https://us-cert.cisa.gov/ics/advisories/icsa-21-201-01	Third Party Advisory
https://www.mitsubishielectric.com/en/psirt/vulnerability/pdf/2021-006_en.pdf	Patch Vendor Advisory
https://jvn.jp/vu/JVNVU94348759/index.html	Patch Third Party Advisory
https://us-cert.cisa.gov/ics/advisories/icsa-21-201-01	Third Party Advisory
https://www.mitsubishielectric.com/en/psirt/vulnerability/pdf/2021-006_en.pdf	Patch Vendor Advisory

Configurations

Configuration 1 (hide)

OR	cpe:2.3:o:mitsubishielectric:fx3u-enet-l_firmware::::::::
	cpe:2.3:o:mitsubishielectric:fx3u-enet-p502_firmware::::::::
	cpe:2.3:o:mitsubishielectric:fx3u-enet_firmware::::::::

History

No history.

Information

Published : 2021-07-22 12:15

Updated : 2024-11-21 05:46

NVD link : CVE-2021-20596

Mitre link : CVE-2021-20596

CVE.ORG link : CVE-2021-20596

JSON object : View

Products Affected

mitsubishielectric

fx3u-enet_firmware
fx3u-enet-l_firmware
fx3u-enet-p502_firmware

CWE

CWE-476

NULL Pointer Dereference

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