CVE-2020-3189
No exploitation reported by the sources we read.
- Published2020-05-06
- WeaknessCWE-400 · CWE-401
Am I affected?
Debian, Ubuntu or Red Hat sometimes backport a fix without changing the upstream version number: such a version reads « to verify », never « affected ».With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.
Description
A vulnerability in the VPN System Logging functionality for Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to cause a memory leak that can deplete system memory over time, which can cause unexpected system behaviors or device crashes. The vulnerability is due to the system memory not being properly freed for a VPN System Logging event generated when a VPN session is created or deleted. An attacker could exploit this vulnerability by repeatedly creating or deleting a VPN tunnel connection, which could leak a small amount of system memory for each logging event. A successful exploit could allow the attacker to cause system memory depletion, which can lead to a systemwide denial of service (DoS) condition. The attacker does not have any control of whether VPN System Logging is configured or not on the device, but it is enabled by default.
Timeline
dates in UTC- 2020-05-0617:15CVE publishedNVD
Observed activity
isMalicious corpus · updated 2026-10-23 21:37 UTCBlock these indicators
- Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2020-3189?format=txt
- CSV export: https://api.ismalicious.com/edl/cve/CVE-2020-3189?format=csv
- TAXII collection of exploited CVEs
- The EDL and CSV take an API key on the Pro plan.
Versions per branch
NVD| Branch | Affected | Fixed in | Source |
|---|---|---|---|
| 9.9 | = 9.9\(2\) | no fix published | NVD |
| 9.9 | = 9.9\(2.21\) | no fix published | NVD |
| 9.9 | = 9.9\(2.52\) | no fix published | NVD |
| 9.9 | = 9.9\(2.55\) | no fix published | NVD |
| Branch | Affected | Fixed in | Source |
|---|---|---|---|
| 9.9 | = 9.9\(2\) | no fix published | NVD |
| 9.9 | = 9.9\(2.21\) | no fix published | NVD |
| 9.9 | = 9.9\(2.52\) | no fix published | NVD |
| 9.9 | = 9.9\(2.55\) | no fix published | NVD |
| Branch | Affected | Fixed in | Source |
|---|---|---|---|
| 9.9 | = 9.9\(2\) | no fix published | NVD |
| 9.9 | = 9.9\(2.21\) | no fix published | NVD |
| 9.9 | = 9.9\(2.52\) | no fix published | NVD |
| 9.9 | = 9.9\(2.55\) | no fix published | NVD |
10 more products in the sources.
as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.
Fix
Advisories and patches
- tools.cisco.comVendor Advisory
Detection
- Nuclei template
- none so far ProjectDiscovery
- Exploit-DB
- no entry Exploit-DB
- Proof-of-concept repositories
- none listed PoC-in-GitHub
Sources
Technical details
- CVSS v3 Vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
- Published
- 2020-05-06
- Last Modified
- 2026-08-11
- NVD status
- Modified
Frequently asked questions
What is CVE-2020-3189?
Is CVE-2020-3189 actively exploited?
What is the CVSS score for CVE-2020-3189?
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