VDB
CVE-2020-3220
CVE-2020-3220
PUBLISHED
CVSS 6.800000190734863 MEDIUM
A vulnerability in the hardware crypto driver of Cisco IOS XE Software for Cisco 4300 Series Integrated Services Routers and Cisco Catalyst 9800-L Wireless Controllers could allow an unauthenticated, remote attacker to disconnect legitimate IPsec VPN sessions to an affected device. The vulnerability is due to insufficient verification of authenticity of received Encapsulating Security Payload (ESP) packets. An attacker could exploit this vulnerability by tampering with ESP cleartext values as a man-in-the-middle.
EPSS 0.42% · 62.3th percentile
Risk Scores
CVSS 3.0
6.800000190734863
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:N/A:H
EPSS Score
0.42%
62.3th percentile
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Cisco | Cisco IOS XE Software 16.4.1 | n/a |
| cisco | ios_xe | 16.4.1, 16.4.2, 16.4.3 |
Exploit Intelligence
Timeline
- Jun 3, 2020 CVE Published
- Apr 14, 2021 EPSS Score
- Jun 23, 2021 EPSS Score
- Aug 24, 2021 EPSS Score
- Oct 26, 2021 EPSS Score
- Jan 6, 2022 EPSS Score
- Feb 4, 2022 EPSS Score
- Feb 28, 2022 EPSS Score
- Apr 1, 2022 EPSS Score
- May 1, 2022 EPSS Score
- Jul 3, 2022 EPSS Score
- Sep 4, 2022 EPSS Score