---
id: CVE-2020-3195
title: >-
  A vulnerability in the Open Shortest Path First (OSPF) implementation in Cisco
  Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense
  (FTD) Software could allow an unauthenticated, remote attacker to cause a
  memory…
summary: >-
  A vulnerability in the Open Shortest Path First (OSPF) implementation in Cisco
  Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense
  (FTD) Software could allow an unauthenticated, remote attacker to cause a
  memory…
severity: high
cvss: 7.5
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'
cwe:
  - CWE-400
  - CWE-401
vendor: cisco
product: secure_firewall_threat_defense
affected:
  - 'secure_firewall_threat_defense >= 6.4.0, < 6.4.0.9'
  - 'secure_firewall_threat_defense >= 6.5.0, < 6.5.0.5'
  - asa_5505_firmware = 9.12(2)
  - asa_5510_firmware = 9.12(2)
  - asa_5512-x_firmware = 9.12(2)
  - asa_5515-x_firmware = 9.12(2)
  - asa_5520_firmware = 9.12(2)
  - asa_5525-x_firmware = 9.12(2)
  - asa_5540_firmware = 9.12(2)
  - asa_5545-x_firmware = 9.12(2)
  - asa_5550_firmware = 9.12(2)
  - asa_5555-x_firmware = 9.12(2)
  - asa_5580_firmware = 9.12(2)
  - asa_5585-x_firmware = 9.12(2)
  - 'adaptive_security_appliance_software >= 9.12, < 9.12.3.2'
  - 'adaptive_security_appliance_software >= 9.13, < 9.13.1.7'
patched:
  - secure_firewall_threat_defense 6.5.0.5
  - adaptive_security_appliance_software 9.13.1.7
published: '2020-05-06'
updated: '2026-08-11'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2020-3195'
references:
  - url: >-
      https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-asa-ftd-ospf-memleak-DHpsgfnv
    label: psirt@cisco.com
  - url: >-
      https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-asa-ftd-ospf-memleak-DHpsgfnv
    label: af854a3a-2127-422b-91ae-364da2661108
tags:
  - nvd
epss: 0.0192
epssPercentile: 0.79004
ingestedAt: '2026-08-11T19:48:27.581Z'
---

## Overview

A vulnerability in the Open Shortest Path First (OSPF) implementation in Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to cause a memory leak on an affected device. The vulnerability is due to incorrect processing of certain OSPF packets. An attacker could exploit this vulnerability by sending a series of crafted OSPF packets to be processed by an affected device. A successful exploit could allow the attacker to continuously consume memory on an affected device and eventually cause it to reload, resulting in a denial of service (DoS) condition.

## Affected

- `secure_firewall_threat_defense >= 6.4.0, < 6.4.0.9`
- `secure_firewall_threat_defense >= 6.5.0, < 6.5.0.5`
- `asa_5505_firmware = 9.12(2)`
- `asa_5510_firmware = 9.12(2)`
- `asa_5512-x_firmware = 9.12(2)`
- `asa_5515-x_firmware = 9.12(2)`
- `asa_5520_firmware = 9.12(2)`
- `asa_5525-x_firmware = 9.12(2)`
- `asa_5540_firmware = 9.12(2)`
- `asa_5545-x_firmware = 9.12(2)`
- `asa_5550_firmware = 9.12(2)`
- `asa_5555-x_firmware = 9.12(2)`
- `asa_5580_firmware = 9.12(2)`
- `asa_5585-x_firmware = 9.12(2)`
- `adaptive_security_appliance_software >= 9.12, < 9.12.3.2`
- `adaptive_security_appliance_software >= 9.13, < 9.13.1.7`

## Remediation

Upgrade past the affected range:

- `secure_firewall_threat_defense 6.5.0.5`
- `adaptive_security_appliance_software 9.13.1.7`