CVE-2021-33540 json
Phoenix Contact: Undocumented FTP acces in certain AXL F BK and IL BK devices
published 2021-06-25 5 y ago modified 2026-06-17 4 mo ago also EUVD-2021-20232
- cvss
- 7.3
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.7%
- EPSS 0.7% chance of exploitation in 30 days, percentile 54%
- public exploits
- 0
- none known
Summary
In certain devices of the Phoenix Contact AXL F BK and IL BK product families an undocumented password protected FTP access to the root directory exists.
Patch / fix
- Phoenix Contact AXL F BK 1.30, 1.40
Exploit prediction
0.72% chance of exploitation in the next 30 days, higher than 54% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 7.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L |
| NVD | 3.1 | 7.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L |
| NVD | 2.0 | 7.5 | AV:N/AC:L/Au:N/C:P/I:P/A:P |
Affected products
- Phoenix Contact AXL F BK
- Phoenix Contact IL
Classification
- Weakness
-
- CWE-798 Use of Hard-coded Credentials
References
-
cert.vde.com
/en-us/advisories/vde-2021-021
third-party-advisory
Sources
- CVE List CVE-2021-33540
- NVD CVE-2021-33540
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