Resource exhaustion in Cisco Firepower Threat Defense Software
CVE-2021-40114
Multiple Cisco products are affected by a vulnerability in the way the Snort detection engine processes ICMP traffic that could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. T…
EPSS: 0.024 (82.0th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 6.8 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:N/A:H.
Affected products
- Cisco Firepower Threat Defense Software — versions n/a
- Cisco Firepower_threat_defense
- Cisco Secure_firewall_management_center — versions 2.9.14.0, 2.9.15, 2.9.16
- Cisco Unified_threat_defense
- Snort
Weakness classification (CWE)
Public proof-of-concept exploits
References
- psirt@cisco.com (vendor-advisory, Vendor Advisory)
- psirt@cisco.com (mailing-list)
- psirt@cisco.com (vendor-advisory)
Frequently asked questions
- What is CVE-2021-40114?
- CVE-2021-40114 is a medium-severity vulnerability in Cisco Firepower Threat Defense Software, classified under Allocation of Resources Without Limits or Throttling. CVSS score: 6.8/10. Published 2021-10-27.
- How severe is CVE-2021-40114?
- Medium severity. CVSS v3 base score is 6.8 out of 10.
- Is CVE-2021-40114 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.