CVE-2021-30066 json
On Schneider Electric ConneXium Tofino Firewall TCSEFEA23F3F22 before 03.23, TCSEFEA23F3F20/21, and Belden Tofino Xenon Security Appliance,…
published 2022-04-03 4 y ago modified 2026-06-17 4 mo ago also EUVD-2021-17010
- cvss
- 6.8
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.2%
- EPSS 0.2% chance of exploitation in 30 days, percentile 15%
- public exploits
- 0
- none known
Summary
On Schneider Electric ConneXium Tofino Firewall TCSEFEA23F3F22 before 03.23, TCSEFEA23F3F20/21, and Belden Tofino Xenon Security Appliance, an arbitrary firmware image can be loaded because firmware signature verification (for a USB stick) can be bypassed. NOTE: this issue exists because of an incomplete fix of CVE-2017-11400.
Patch / fix
- belden tofino_xenon_security_appliance_firmware 03.2.03
- schneider-electric tcsefea23f3f22_firmware 03.23
Exploit prediction
0.25% chance of exploitation in the next 30 days, higher than 15% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 6.8 | CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| NVD | 2.0 | 7.2 | AV:L/AC:L/Au:N/C:C/I:C/A:C |
Classification
- Weakness
-
- CWE-347 Improper Verification of Cryptographic Signature
References
-
belden.com
/support/security-assurance
vendor-advisory
-
download.schneider-electric.com
/files?p_Doc_Ref=SEVD-2022-011-05
vendor-advisory
Sources
- CVE List CVE-2021-30066
- NVD CVE-2021-30066
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