Improper error handling in Cisco Firewall Threat Defense (FTD) and Cisco Secure Firewall Management Center (formerly Firepower Management Center, FMC) - CVE-2026-20068
Published: March 4, 2026
Vulnerability identifier: #VU123552
CSH Severity: Medium
CVSS v4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-20068
CWE-ID: CWE-388
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to perform a denial of service attack.
The vulnerability exists due to improper error handling when parsing remote procedure call (RPC) data. A remote attacker can send specially crafted RPC packets through an established connection to be parsed by Snort 3 and perform a denial of service attack.
Affected software
Cisco Firewall Threat Defense (FTD)
Cisco Secure Firewall Management Center (formerly Firepower Management Center, FMC)
Cisco Secure Firewall Management Center (formerly Firepower Management Center, FMC)
How to mitigate CVE-2026-20068
Install updates from vendor's website.
Cisco Firewall Threat Defense (FTD) - addressed in versions 7.2.11, 7.4.4, 7.6.4, 7.7.11
Cisco Secure Firewall Management Center (formerly Firepower Management Center, FMC) - addressed in versions 7.2.11, 7.4.4, 7.6.4, 7.7.11
Cisco Secure Firewall Management Center (formerly Firepower Management Center, FMC) - addressed in versions 7.2.11, 7.4.4, 7.6.4, 7.7.11