CVE-2024-20342 json
Cisco Firepower Threat Defense Software Rate Filter Bypass Vulnerability
published 2024-10-23 2 y ago modified 2026-08-11 2 mo ago also EUVD-2024-18057
- cvss
- 5.8
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.5%
- EPSS 0.5% chance of exploitation in 30 days, percentile 42%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
- cisco snort 3.1.74.0
- cisco secure_firewall_threat_defense 7.0.6.2, 7.2.6, 7.4.2
CISA SSVC
- Exploitation
- none
- Automatable
- yes
- Technical impact
- partial
- Assessed
- 2 y ago
Exploit prediction
0.49% chance of exploitation in the next 30 days, higher than 42% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 5.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:L |
| NVD | 3.1 | 8.6 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:N |
Affected products
- Cisco Cisco Firepower Threat Defense Software
- cisco firepower_threat_defense_software
Classification
- Weakness
-
- CWE-1025 Comparison Using Wrong Factors
References
Sources
- CVE List CVE-2024-20342
- NVD CVE-2024-20342
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