CVE-2021-27458

Severity Score

7.5

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

If Ethernet communication of the JTEKT Corporation TOYOPUC product series’ (TOYOPUC-PC10 Series: PC10G-CPU TCC-6353: All versions, PC10GE TCC-6464: All versions, PC10P TCC-6372: All versions, PC10P-DP TCC-6726: All versions, PC10P-DP-IO TCC-6752: All versions, PC10B-P TCC-6373: All versions, PC10B TCC-1021: All versions, PC10B-E/C TCU-6521: All versions, PC10E TCC-4737: All versions; TOYOPUC-Plus Series: Plus CPU TCC-6740: All versions, Plus EX TCU-6741: All versions, Plus EX2 TCU-6858: All versions, Plus EFR TCU-6743: All versions, Plus EFR2 TCU-6859: All versions, Plus 2P-EFR TCU-6929: All versions, Plus BUS-EX TCU-6900: All versions; TOYOPUC-PC3J/PC2J Series: FL/ET-T-V2H THU-6289: All versions, 2PORT-EFR THU-6404: All versions) are left in an open state by an attacker, Ethernet communications cannot be established with other devices, depending on the settings of the link parameters.

Si la comunicación Ethernet de la serie de productos TOYOPUC de JTEKT Corporation" (Serie TOYOPUC-PC10: PC10G-CPU TCC-6353: Todas las versiones, PC10GE TCC-6464: Todas las versiones, PC10P TCC-6372: Todas las versiones, PC10P-DP TCC-6726: Todas las versiones, PC10P-DP-IO TCC-6752: Todas las versiones, PC10B-P TCC-6373: Todas las versiones, PC10B TCC-1021: Todas las versiones, PC10B-E/C TCU-6521: Todas las versiones, PC10E TCC-4737: Todas las versiones; Serie TOYOPUC-Plus: Plus CPU TCC-6740: Todas las versiones, Plus EX TCU-6741: Todas las versiones, Plus EX2 TCU-6858: Todas las versiones, Plus EFR TCU-6743: Todas las versiones, Plus EFR2 TCU-6859: Todas las versiones, Plus 2P-EFR TCU-6929: Todas las versiones, Plus BUS-EX TCU-6900: Todas las versiones; Serie TOYOPUC-PC3J/PC2J: FL/ET-T-V2H THU-6289: Todas las versiones, 2PORT-EFR THU-6404: Todas las versiones) son dejadas en estado abierto por un atacante, las comunicaciones Ethernet no pueden ser establecidas con otros dispositivos, dependiendo de la configuración de los parámetros del enlace

*Credits: N/A

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

Attack Vector

Network

Attack Complexity

Low

Authentication

None

Confidentiality

None

Integrity

None

Availability

Partial

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2021-02-19 CVE Reserved
2021-04-19 CVE Published
2024-01-03 EPSS Updated
2024-08-03 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-404: Improper Resource Shutdown or Release

CAPEC

References (1)

URL	Tag	Source
https://us-cert.cisa.gov/ics/advisories/icsa-21-103-03	Third Party Advisory

URL	Date	SRC

URL	Date	SRC

URL	Date	SRC

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Jtekt Search vendor "Jtekt"	Pc10g-cpu Tcc-6353 Firmware Search vendor "Jtekt" for product "Pc10g-cpu Tcc-6353 Firmware"	*	-	Affected	in	Jtekt Search vendor "Jtekt"	Pc10g-cpu Tcc-6353 Search vendor "Jtekt" for product "Pc10g-cpu Tcc-6353"	-	-	Safe
Jtekt Search vendor "Jtekt"	Pc10ge Tcc-6464 Firmware Search vendor "Jtekt" for product "Pc10ge Tcc-6464 Firmware"	*	-	Affected	in	Jtekt Search vendor "Jtekt"	Pc10ge Tcc-6464 Search vendor "Jtekt" for product "Pc10ge Tcc-6464"	-	-	Safe
Jtekt Search vendor "Jtekt"	Pc10p Tcc-6372 Firmware Search vendor "Jtekt" for product "Pc10p Tcc-6372 Firmware"	*	-	Affected	in	Jtekt Search vendor "Jtekt"	Pc10p Tcc-6372 Search vendor "Jtekt" for product "Pc10p Tcc-6372"	-	-	Safe
Jtekt Search vendor "Jtekt"	Pc10p-dp Tcc-6726 Firmware Search vendor "Jtekt" for product "Pc10p-dp Tcc-6726 Firmware"	*	-	Affected	in	Jtekt Search vendor "Jtekt"	Pc10p-dp Tcc-6726 Search vendor "Jtekt" for product "Pc10p-dp Tcc-6726"	-	-	Safe
Jtekt Search vendor "Jtekt"	Pc10p-dp-io Tcc-6752 Firmware Search vendor "Jtekt" for product "Pc10p-dp-io Tcc-6752 Firmware"	*	-	Affected	in	Jtekt Search vendor "Jtekt"	Pc10p-dp-io Tcc-6752 Search vendor "Jtekt" for product "Pc10p-dp-io Tcc-6752"	-	-	Safe
Jtekt Search vendor "Jtekt"	Pc10b-p Tcc-6373 Firmware Search vendor "Jtekt" for product "Pc10b-p Tcc-6373 Firmware"	*	-	Affected	in	Jtekt Search vendor "Jtekt"	Pc10b-p Tcc-6373 Search vendor "Jtekt" for product "Pc10b-p Tcc-6373"	-	-	Safe
Jtekt Search vendor "Jtekt"	Pc10b Tcc-1021 Firmware Search vendor "Jtekt" for product "Pc10b Tcc-1021 Firmware"	*	-	Affected	in	Jtekt Search vendor "Jtekt"	Pc10b Tcc-1021 Search vendor "Jtekt" for product "Pc10b Tcc-1021"	-	-	Safe
Jtekt Search vendor "Jtekt"	Pc10b-e\/c Tcu-6521 Firmware Search vendor "Jtekt" for product "Pc10b-e\/c Tcu-6521 Firmware"	*	-	Affected	in	Jtekt Search vendor "Jtekt"	Pc10b-e\/c Tcu-6521 Search vendor "Jtekt" for product "Pc10b-e\/c Tcu-6521"	-	-	Safe
Jtekt Search vendor "Jtekt"	Pc10e Tcc-4737 Firmware Search vendor "Jtekt" for product "Pc10e Tcc-4737 Firmware"	*	-	Affected	in	Jtekt Search vendor "Jtekt"	Pc10e Tcc-4737 Search vendor "Jtekt" for product "Pc10e Tcc-4737"	-	-	Safe
Jtekt Search vendor "Jtekt"	Plus Cpu Tcc-6740 Firmware Search vendor "Jtekt" for product "Plus Cpu Tcc-6740 Firmware"	*	-	Affected	in	Jtekt Search vendor "Jtekt"	Plus Cpu Tcc-6740 Search vendor "Jtekt" for product "Plus Cpu Tcc-6740"	-	-	Safe
Jtekt Search vendor "Jtekt"	Plus Ex Tcu-6741 Firmware Search vendor "Jtekt" for product "Plus Ex Tcu-6741 Firmware"	*	-	Affected	in	Jtekt Search vendor "Jtekt"	Plus Ex Tcu-6741 Search vendor "Jtekt" for product "Plus Ex Tcu-6741"	-	-	Safe
Jtekt Search vendor "Jtekt"	Plus Ex2 Tcu-6858 Firmware Search vendor "Jtekt" for product "Plus Ex2 Tcu-6858 Firmware"	*	-	Affected	in	Jtekt Search vendor "Jtekt"	Plus Ex2 Tcu-6858 Search vendor "Jtekt" for product "Plus Ex2 Tcu-6858"	-	-	Safe
Jtekt Search vendor "Jtekt"	Plus Efr Tcu-6743 Firmware Search vendor "Jtekt" for product "Plus Efr Tcu-6743 Firmware"	*	-	Affected	in	Jtekt Search vendor "Jtekt"	Plus Efr Tcu-6743 Search vendor "Jtekt" for product "Plus Efr Tcu-6743"	-	-	Safe
Jtekt Search vendor "Jtekt"	Plus Efr2 Tcu-6859 Firmware Search vendor "Jtekt" for product "Plus Efr2 Tcu-6859 Firmware"	*	-	Affected	in	Jtekt Search vendor "Jtekt"	Plus Efr2 Tcu-6859 Search vendor "Jtekt" for product "Plus Efr2 Tcu-6859"	-	-	Safe
Jtekt Search vendor "Jtekt"	Plus 2p-efr Tcu-6929 Firmware Search vendor "Jtekt" for product "Plus 2p-efr Tcu-6929 Firmware"	*	-	Affected	in	Jtekt Search vendor "Jtekt"	Plus 2p-efr Tcu-6929 Search vendor "Jtekt" for product "Plus 2p-efr Tcu-6929"	-	-	Safe
Jtekt Search vendor "Jtekt"	Plus Bus-ex Tcu-6900 Firmware Search vendor "Jtekt" for product "Plus Bus-ex Tcu-6900 Firmware"	*	-	Affected	in	Jtekt Search vendor "Jtekt"	Plus Bus-ex Tcu-6900 Search vendor "Jtekt" for product "Plus Bus-ex Tcu-6900"	-	-	Safe
Jtekt Search vendor "Jtekt"	Fl\/et-t-v2h Thu-6289 Firmware Search vendor "Jtekt" for product "Fl\/et-t-v2h Thu-6289 Firmware"	*	-	Affected	in	Jtekt Search vendor "Jtekt"	Fl\/et-t-v2h Thu-6289 Search vendor "Jtekt" for product "Fl\/et-t-v2h Thu-6289"	-	-	Safe
Jtekt Search vendor "Jtekt"	2port-efr Thu-6404 Firmware Search vendor "Jtekt" for product "2port-efr Thu-6404 Firmware"	*	-	Affected	in	Jtekt Search vendor "Jtekt"	2port-efr Thu-6404 Search vendor "Jtekt" for product "2port-efr Thu-6404"	-	-	Safe