Description
Multiple Cisco products are affected by a vulnerability in the rate filtering feature of the Snort detection engine that could allow an unauthenticated, remote attacker to bypass a configured rate limiting filter. This vulnerability is due to an incorrect connection count comparison. An attacker could exploit this vulnerability by sending traffic through an affected device at a rate that exceeds a configured rate filter. A successful exploit could allow the attacker to successfully bypass the rate filter. This could allow unintended traffic to enter the network protected by the affected device.
Affected products
cisco: snort; cisco: secure firewall threat defense
References1
- sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAd… Vendor Advisory
Metrics
- CVSS 3.1
-
8.6
HIGH
Score source: NVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:N - EPSS — exploit probability
- 0% percentile: 43 · as of 6 November 2026
- CWE
- CWE-1025
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