CVE-2018-0477

6.7 MEDIUM 0.5% exploit odds Fix listed

What it is

A vulnerability in the CLI parser of Cisco IOS XE Software could allow an authenticated, local attacker to execute commands on the underlying Linux shell of an affected device with root privileges. The vulnerability exist because the affected software improperly sanitizes command arguments, failing to prevent access to certain internal data structures on an affected device. An attacker who has privileged EXEC mode (privilege level 15) access to an affected device could exploit these vulnerabilities on the device by executing CLI commands that contain custom arguments. A successful exploit could allow the attacker to execute arbitrary commands with root privileges on the affected device.

At a glance

Exploitability: Can be exploited locally on the machine with an admin-level account. High risk of data exposure, data tampering, service disruption.
Exploit odds: 0.5% chance of exploitation in the next 30 days (EPSS).
Fix: A patch, advisory or fixed version is referenced. Upgrade or apply it.

Timeline

2018-10-05 14:29 UTC PublishedDisclosed publicly on CVE.org and NVD
2026-06-17 01:30 UTC Last updatedMost recent change to the record

Why it ranks here

Exploited in the wild: no, CISA does not list it.
Exploit odds: 0.5% in the next 30 days (EPSS).
Severity: 6.7 MEDIUM (CVSS).
Fix: a patch or advisory is linked.

Details

Published: 2018-10-05 14:29 UTC
Last modified: 2026-06-17 01:30 UTC
Exploit probability: 0.5% · EPSS, next 30 days
Weakness: CWE-77 · Command injection
Record status: Modified

Affected

Cisco iOS Xe 15.3\(3\)s3.16
Cisco iOS Xe 16.7\(1\)
Cisco iOS Xe 16.7.1

Attack profile CVSS 3.1 · 6.7

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

Raw vector

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

Is it in your code?

Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.

Read https://cve-list.com/agent/cve/CVE-2018-0477.md and follow it. Check whether this project is affected by CVE-2018-0477. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.

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Fix and advisories

References

NVD record · CVE.org record