CVE-2020-3563
Last modified
CVE-2020-3563 is a high-severity vulnerability rated 8.6/10 on the CVSS scale. A vulnerability in the packet processing functionality of Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. The vulnerability is due to inefficient memory management. EPSS estimates a 1.42% chance of exploitation in the next 30 days.
Description
A vulnerability in the packet processing functionality of Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. The vulnerability is due to inefficient memory management. An attacker could exploit this vulnerability by sending a large number of TCP packets to a specific port on an affected device. A successful exploit could allow the attacker to exhaust system memory, which could cause the device to reload unexpectedly. No manual intervention is needed to recover the device after it has reloaded.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Cisco | Firepower Threat Defense | >= 6.3.0, < 6.3.0.6 |
| Cisco | Firepower Threat Defense | >= 6.4.0, < 6.4.0.10 |
| Cisco | Firepower Threat Defense | >= 6.5.0, < 6.5.0.5 |
References
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2020-3563?
How severe is CVE-2020-3563?
How do I fix CVE-2020-3563?
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
Related CVEs from 2020
- CVE-2020-35624An issue was discovered in the SecurePoll extension for Medi…5.3
- CVE-2020-35625An issue was discovered in the Widgets extension for MediaWi…8.8
- CVE-2020-35626An issue was discovered in the PushToWatch extension for Med…8.8
- CVE-2020-35627Ultimate WooCommerce Gift Cards 3.0.2 is affected by a file …8.8
- CVE-2020-35628A code execution vulnerability exists in the Nef polygon-par…9.8
- CVE-2020-35629Multiple code execution vulnerabilities exists in the Nef po…8.8
- CVE-2020-35630Multiple code execution vulnerabilities exists in the Nef po…8.8
- CVE-2020-35631Multiple code execution vulnerabilities exists in the Nef po…8.8
- CVE-2020-35632Multiple code execution vulnerabilities exists in the Nef po…8.8
- CVE-2020-35633A code execution vulnerability exists in the Nef polygon-par…8.8
- CVE-2020-35634A code execution vulnerability exists in the Nef polygon-par…8.8
- CVE-2020-35635A code execution vulnerability exists in the Nef polygon-par…8.8
Are you affected by CVE-2020-3563?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST