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CVE-2026-20006 PUBLISHED CVSS 5.800000190734863 MEDIUM

A vulnerability in the TLS cryptography functionality of the Snort 3 Detection Engine of Cisco Secure Firewall Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to cause the Snort 3 Detection Engine to unexpectedly restart, resulting in a denial of service (DoS) condition. This vulnerability is due to improper implementation of the TLS protocol. An attacker could exploit this vulnerability by sending a crafted TLS packet to an affected system. A successful exploit could allow the attacker to cause a device that is running Cisco Secure FTD Software to drop network traffic, resulting in a DoS condition.  Note: TLS 1.3 is not affected by this vulnerability.

EPSS 0.12% · 31.4th percentile

Risk Scores

CVSS v3.1
5.800000190734863
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:L
EPSS Score
0.12%
31.4th percentile

Affected Products

VendorProductVersions
CiscoCisco Secure Firewall Threat Defense (FTD) Software7.2.0, 7.2.0.1, 7.2.1

Timeline

References

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