CVE-2021-33540
Phoenix Contact: Undocumented FTP acces in certain AXL F BK and IL BK devices
HIGH
7.3
CVSS Score
Published: June 25, 2021 at 06:26 PM UTC
Updated: June 17, 2026 at 03:54 AM UTC
36 products affected across 1 vendorAxl F Bk Eth Xc FirmwareAxl F Bk Pn FirmwareAxl F Bk Eth Firmware
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Severity
HIGH7.3
Exploit prediction
EPSS 0.7%
Description
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.
Affected
Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.
v < 1.30
Affected range stops below 1.30, so it looks safe — our inference, not a vendor statement
phoenixcontact-axl-f-bk-eip-ef (same device)
v < 1.30
Affected range stops below 1.30, so it looks safe — our inference, not a vendor statement
phoenixcontact-axl-f-bk-eip (same device)
v < 1.30
Affected range stops below 1.30, so it looks safe — our inference, not a vendor statement
phoenixcontact-axl-f-bk-eth (same device)
All versions
phoenixcontact-axl-f-bk-eth-net2 (same device)
v < 1.30
Affected range stops below 1.30, so it looks safe — our inference, not a vendor statement
phoenixcontact-axl-f-bk-eth-xc (same device)
v < 1.30
Affected range stops below 1.30, so it looks safe — our inference, not a vendor statement
phoenixcontact-axl-f-bk-pn-tps (same device)
v < 1.30
Affected range stops below 1.30, so it looks safe — our inference, not a vendor statement
phoenixcontact-axl-f-bk-pn-tps-xc (same device)
v < 1.40
Affected range stops below 1.40, so it looks safe — our inference, not a vendor statement
phoenixcontact-axl-f-bk-s35 (same device)
Remediation
No guide yetNo remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.
References (1)
x_refsource_CONFIRMThird Party Advisory
Source: [email protected]
https://cert.vde.com/en-us/advisories/vde-2021-021CVSS
7.3HIGHCERTVDE
- Attack Vector
- NETWORK
- Complexity
- LOW
- Privileges
- NONE
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality
- LOW
- Integrity
- LOW
- Availability
- LOW
Vector?
Quick Info
StatusMODIFIED
CWE
CWE-798
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