Is CVE-2020-3375 actively exploited?

No active exploitation of CVE-2020-3375 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2020-3375 be exploited remotely?

Yes. CVE-2020-3375 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2020-3375?

CVE-2020-3375 has a CVSS score of 9.8 (CRITICAL).

HOME VULNERABILITIESCVE-2020-3375

CRITICAL

CVE-2020-3375

CWE-119Published: July 31, 2020· Updated: Jun 17, 2026

9.8

CVSS v3.1

Official Description

A vulnerability in Cisco SD-WAN Solution Software could allow an unauthenticated, remote attacker to cause a buffer overflow on an affected device. The vulnerability is due to insufficient input validation. An attacker could exploit this vulnerability by sending crafted traffic to an affected device. A successful exploit could allow the attacker to gain access to information that they are not authorized to access, make changes to the system that they are not authorized to make, and execute commands on an affected system with privileges of the root user.

NVD Source

Technical Analysis

CVE-2020-3375 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 9.8.

From a weakness classification perspective (CWE-119): Buffer overflow vulnerabilities can lead to arbitrary code execution or denial of service by corrupting adjacent memory.