CVE-2018-0121

What it is

A vulnerability in the authentication functionality of the web-based service portal of Cisco Elastic Services Controller Software could allow an unauthenticated, remote attacker to bypass authentication and execute arbitrary actions with administrator privileges on an affected system. The vulnerability is due to improper security restrictions that are imposed by the web-based service portal of the affected software. An attacker could exploit this vulnerability by submitting an empty password value to an affected portal when prompted to enter an administrative password for the portal. A successful exploit could allow the attacker to bypass authentication and gain administrator privileges for the web-based service portal of the affected software. This vulnerability affects Cisco Elastic Services Controller Software Release 3.0.0. Cisco Bug IDs: CSCvg29809.

At a glance

Exploitability

Can be exploited over the network without logging in. High risk of data exposure, data tampering, service disruption.

Exploit odds

2.5% chance of exploitation in the next 30 days (EPSS).

Fix

A patch, advisory or fixed version is referenced. Upgrade or apply it.

Timeline

1. 2018-02-22 00:29 UTC PublishedDisclosed publicly on CVE.org and NVD
2. 2026-06-17 01:29 UTC Last updatedMost recent change to the record

Why it ranks here

• Exploited in the wild: no, CISA does not list it.
• Exploit odds: 2.5% in the next 30 days (EPSS).
• Severity: 9.8 CRITICAL (CVSS).
• Fix: a patch or advisory is linked.

Details

Published

2018-02-22 00:29 UTC

Last modified

2026-06-17 01:29 UTC

Exploit probability

2.5% · EPSS, next 30 days

Weakness

CWE-287 · Improper authentication

Record status

Modified

Affected

• Cisco Elastic Services Controller 3.0.0
• Cisco Virtual Managed Services 3.0

Attack profile CVSS 3.0 · 9.8

Attack vector

Network

Complexity

Low

Privileges needed

None

User interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

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-2018-0121.md and follow it. Check whether this project is affected by CVE-2018-0121. 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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