Cisco Secure Firewall Management Center
CVE-2021-34754
Multiple vulnerabilities in the payload inspection for Ethernet Industrial Protocol (ENIP) traffic for Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to bypass configured rules for ENIP traffic. These vulnerabilities are due to incomplete processing during deep packet inspection for ENIP packets. An attacker could exploit these vulnerabilities by sending a crafted ENIP packet to the targeted interface. A successful exploit could allow the attacker to bypass configured access control and intrusion policies that should be activated for the ENIP packet.
What this means for your business
- It affects Cisco Secure Firewall Management Center. It matters if your company, or a supplier that handles your data, runs it.
- An attacker can use it remotely, over a network, without a login, and without anyone at your company clicking anything.
What to do
- 1Check whether your company or your suppliers run Cisco Secure Firewall Management Center, and which version. The affected versions are listed further down this page.
- 2If you do, apply the vendor's fix. A patch or vendor advisory has been published.
Not sure if your company is exposed?
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Scoring
- CVSS
- 5.8 (v3.1)
- Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N- Weakness
- CWE-284
- Assigned by
- psirt@cisco.com
Dates
- Published
- 2021-10-27
- Last modified
- 2026-08-11
- Sources
- NVD
Affected products
- Cisco Secure Firewall Management Center2.9.12, 2.9.14.0, 2.9.16, 2.9.17, 2.9.18
- Cisco Secure Firewall Threat Defense6.4.0 - 6.4.0.13, 6.6.0 - 6.6.5.1, 6.7.0 - 6.7.0.3, 7.0.0 - 7.0.1
As listed in the NVD configuration data. Not a statement about your estate.