CVE-2021-33540 Phoenix Contact: Undocumented FTP acces in certain AXL F BK and IL BK devices
Undocumented FTP access with a password allows attackers to read and modify files on Phoenix Contact industrial network bridges.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2021-33540?
CVE-2021-33540 is a high-severity vulnerability in Phoenix Contact AXL F BK, published on 25 Jun 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official 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.
Weakness: CWE-798
Which versions are affected by CVE-2021-33540?
It affects 18 products.
Products include Phoenixcontact Axl F Bk Eip Ef Firmware, Phoenixcontact Axl F Bk Eip Firmware, Phoenixcontact Axl F Bk Eth Firmware, Phoenixcontact Axl F Bk Eth Net2 Firmware, Phoenixcontact Axl F Bk Eth Xc Firmware, Phoenixcontact Axl F Bk Pn Firmware and 12 more.
How do I fix CVE-2021-33540?
No fix has been published for CVE-2021-33540 yet. Limit exposure of the affected software until one is available.
Is CVE-2021-33540 being exploited?
There is no known exploitation of CVE-2021-33540 in the wild and no public exploit code.
Sources
Also known as GHSA-vgp3-9m7m-h7cr.