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.
Published 2020-06-03 18:15:20
Updated 2020-06-10 23:45:32
View at NVD,   CVE.org

Products affected by CVE-2020-3220

Exploit prediction scoring system (EPSS) score for CVE-2020-3220

0.13%
Probability of exploitation activity in the next 30 days EPSS Score History
~ 46 %
Percentile, the proportion of vulnerabilities that are scored at or less

CVSS scores for CVE-2020-3220

Base Score Base Severity CVSS Vector Exploitability Score Impact Score Score Source First Seen
7.1
HIGH AV:N/AC:M/Au:N/C:N/I:N/A:C
8.6
6.9
NIST
6.8
MEDIUM CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:N/A:H
2.2
4.0
Cisco Systems, Inc.
6.8
MEDIUM CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:N/A:H
2.2
4.0
NIST

CWE ids for CVE-2020-3220

References for CVE-2020-3220

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