CVE-2020-3602

6.3 MEDIUM 0.4% exploit odds Fix listed

What it is

A vulnerability in the CLI of Cisco StarOS operating system for Cisco ASR 5000 Series Routers could allow an authenticated, local attacker to elevate privileges on an affected device. The vulnerability is due to insufficient input validation of CLI commands. An attacker could exploit this vulnerability by sending crafted commands to the CLI. A successful exploit could allow the attacker to execute arbitrary code with the privileges of the root user on the affected device. To exploit this vulnerability, an attacker would need to have valid credentials on an affected device and know the password for the cli test-commands command.

At a glance

Exploitability: Can be exploited locally on the machine with an admin-level account. High risk of data tampering, service disruption.
Exploit odds: 0.4% chance of exploitation in the next 30 days (EPSS).
Fix: A patch, advisory or fixed version is referenced. Upgrade or apply it.

Timeline

2020-10-08 05:15 UTC PublishedDisclosed publicly on CVE.org and NVD
2026-06-17 03:18 UTC Last updatedMost recent change to the record

Why it ranks here

Exploited in the wild: no, CISA does not list it.
Exploit odds: 0.4% in the next 30 days (EPSS).
Severity: 6.3 MEDIUM (CVSS).
Fix: a patch or advisory is linked.

Details

Published: 2020-10-08 05:15 UTC
Last modified: 2026-06-17 03:18 UTC
Exploit probability: 0.4% · EPSS, next 30 days
Weakness: CWE-20 · Improper input validation
Record status: Modified

Affected

Cisco Staros < 21.19.n4

Attack profile CVSS 3.1 · 6.3

Attack vector: Local
Complexity: Low
Privileges needed: High
User interaction: None
Scope: Unchanged
Confidentiality: Low
Integrity: High
Availability: High

Raw vector

CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:L/I:H/A:H

Is it in your code?

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Fix and advisories

References

NVD record · CVE.org record