Cyber Resilience

CVE-2024-20407

Cisco Secure Firewall Threat Defense 6.2.3 … 7.4.1.1

Published
23 October 2024
Modified
11 August 2026
Patch / advisory
View advisory
CVSS Score v3.1 5.8
Click a component to see what it means
Raw vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N
EPSS Score 0.0040 33th percentile
Risk Priority 46 floored blend · peak EPSS

Summary

CVE-2024-20407 is a medium-severity an unspecified weakness vulnerability in Cisco Secure Firewall Threat Defense. Its CVSS base score is 5.8 (Medium).

Operationally, ranked at the 33th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.

EU & UK References

Vulnerability Data

A vulnerability in the interaction between the TCP Intercept feature and the Snort 3 detection engine on Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to bypass configured policies on an affected system. Devices that are…

more

configured with Snort 2 are not affected by this vulnerability. This vulnerability is due to a logic error when handling embryonic (half-open) TCP connections. An attacker could exploit this vulnerability by sending a crafted traffic pattern through an affected device. A successful exploit could allow unintended traffic to enter the network protected by the affected device.

CWE(s)
CWE-399NVD-CWE-noinfo

Related Threats

CVEs Like This One

CVE-2023-20083Same product: Cisco Secure Firewall Threat Defense
CVE-2023-20267Same product: Cisco Secure Firewall Threat Defense
CVE-2023-20031Same product: Cisco Secure Firewall Threat Defense
CVE-2023-20177Same product: Cisco Secure Firewall Threat Defense
CVE-2023-20070Same product: Cisco Secure Firewall Threat Defense
CVE-2024-20351Same product: Cisco Secure Firewall Threat Defense
CVE-2026-20017Same product: Cisco Secure Firewall Threat Defense
CVE-2024-20431Same product: Cisco Secure Firewall Threat Defense
CVE-2023-20270Same product: Cisco Secure Firewall Threat Defense
CVE-2026-20050Same product: Cisco Secure Firewall Threat Defense

Affected Assets

cisco
secure firewall threat defense
6.2.3, 6.2.3.1, 6.2.3.10, 6.2.3.11, 6.2.3.12

Mitigating Controls

No mitigating controls mapped yet. The per-CVE control annotator has not reached this CVE.

References