CVE-2021-30064 [Critical] | Security Vulnerability in Tofino Xenon Security App…

On Schneider Electric ConneXium Tofino Firewall TCSEFEA23F3F22 before 03.23, TCSEFEA23F3F20/21, and Belden Tofino Xenon Security Appliance, an SSH login can succeed with hardcoded default credentials (if the device is in the uncommissioned state).

#	Date	Old EPSS score	New EPSS score	Delta (New - Old)
1	2026-06-20	0.84%	0.86%	+0.03%
2	2026-06-15	0.06%	0.84%	+0.78%
3	2025-04-10	—	0.06%	—

Date

Old EPSS score

New EPSS score

Delta (New - Old)

2026-06-20

0.84%

0.86%

+0.03%

2026-06-15

0.06%

0.84%

+0.78%

2025-04-10

—

0.06%

—

Base score	Version	Severity	Vector	Exploitability	Impact	Score source
9.8	3.1	CRITICAL	`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H` Click to expand Attack vector (AV:N) Could be attacked over the internet or any normal routed network—not just someone sitting at the machine. Attack complexity (AC:L) Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup. Privileges required (PR:N) No account or special rights needed—anonymous or random user is enough. User interaction (UI:N) Nobody has to click “OK” or open a trap file; it can work without a victim helping. Scope (S:U) Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems. Confidentiality (C:H) Serious risk that confidential data gets exposed in a big way. Integrity (I:H) They could widely tamper with or forge data—trust in the data is badly hurt. Availability (A:H) Could take the service down hard or make it unusable for people who depend on it.	3.9	5.9	[email protected]
6.8	2.0	MEDIUM	`AV:N/AC:M/Au:N/C:P/I:P/A:P` Click to expand Access vector (AV:N) Can be exploited remotely over network reachability. Access complexity (AC:M) Exploitation needs some favorable conditions, but not exceptional ones. Authentication (AU:N) No authentication is required. Confidentiality impact (C:P) Partial confidentiality impact. Integrity impact (I:P) Partial integrity impact. Availability impact (A:P) Partial availability impact.	8.6	6.4	[email protected]

Base score

Version

Severity

Vector

Exploitability

Impact

Score source

9.8

3.1

CRITICAL

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Click to expand

Attack vector (AV:N): Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L): Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N): No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N): Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U): Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H): Serious risk that confidential data gets exposed in a big way.
Integrity (I:H): They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H): Could take the service down hard or make it unusable for people who depend on it.

3.9

5.9

[email protected]

6.8

2.0

MEDIUM

AV:N/AC:M/Au:N/C:P/I:P/A:P Click to expand

Access vector (AV:N): Can be exploited remotely over network reachability.
Access complexity (AC:M): Exploitation needs some favorable conditions, but not exceptional ones.
Authentication (AU:N): No authentication is required.
Confidentiality impact (C:P): Partial confidentiality impact.
Integrity impact (I:P): Partial integrity impact.
Availability impact (A:P): Partial availability impact.

8.6

6.4

[email protected]

Affected software / configurations for CVE-2021-30064

Vendor	Product	Version	Raw CPE
belden	tofino_xenon_security_appliance_firmware	< 03.2.03	cpe:2.3:o:belden:tofino_xenon_security_appliance_firmware::::::::
belden	tofino_argon_fa-tsa-220-tx\/mm_firmware	—	cpe:2.3:o:belden:tofino_argon_fa-tsa-220-tx\/mm_firmware:-:::::::*
belden	tofino_argon_fa-tsa-220-tx\/tx_firmware	—	cpe:2.3:o:belden:tofino_argon_fa-tsa-220-tx\/tx_firmware:-:::::::*
belden	tofino_argon_fa-tsa-220-mm\/tx_firmware	—	cpe:2.3:o:belden:tofino_argon_fa-tsa-220-mm\/tx_firmware:-:::::::*
belden	tofino_argon_fa-tsa-220-mm\/mm_firmware	—	cpe:2.3:o:belden:tofino_argon_fa-tsa-220-mm\/mm_firmware:-:::::::*
belden	tofino_argon_fa-tsa-100-tx\/tx_firmware	—	cpe:2.3:o:belden:tofino_argon_fa-tsa-100-tx\/tx_firmware:-:::::::*
belden	eagle_20_tofino_943_987-505-mm\/mm_firmware	—	cpe:2.3:o:belden:eagle_20_tofino_943_987-505-mm\/mm_firmware:-:::::::*
belden	eagle_20_tofino_943_987-504-mm\/tx_firmware	—	cpe:2.3:o:belden:eagle_20_tofino_943_987-504-mm\/tx_firmware:-:::::::*
belden	eagle_20_tofino_943_987-502_-tx\/mm_firmware	—	cpe:2.3:o:belden:eagle_20_tofino_943_987-502_-tx\/mm_firmware:-:::::::*
belden	eagle_20_tofino_943_987-501-tx\/tx_firmware	—	cpe:2.3:o:belden:eagle_20_tofino_943_987-501-tx\/tx_firmware:-:::::::*
schneider-electric	tcsefea23f3f20_firmware	—	cpe:2.3:o:schneider-electric:tcsefea23f3f20_firmware:-:::::::*
schneider-electric	tcsefea23f3f21_firmware	—	cpe:2.3:o:schneider-electric:tcsefea23f3f21_firmware:-:::::::*
schneider-electric	tcsefea23f3f22_firmware	< 03.23	cpe:2.3:o:schneider-electric:tcsefea23f3f22_firmware::::::::

References for CVE-2021-30064

URL	Tags
https://download.schneider-electric.com/files?p_Doc_Ref=SEVD-2022-011-05	Vendor Advisory
https://www.belden.com/support/security-assurance	Vendor Advisory

URL

CVE-2021-30064

Exploit prediction scoring system (EPSS) score for CVE-2021-30064

Common vulnerability scoring system (CVSS) metrics for CVE-2021-30064

Weakness enumeration for CVE-2021-30064

Affected software / configurations for CVE-2021-30064

References for CVE-2021-30064