CVE-2023-20188

What it is

A vulnerability in the web-based management interface of Cisco Small Business 200 Series Smart Switches, Cisco Small Business 300 Series Managed Switches, and Cisco Small Business 500 Series Stackable Managed Switches could allow an authenticated, remote attacker to conduct a stored cross-site scripting (XSS) attack against a user of the interface on an affected device. This vulnerability is due to insufficient validation of user-supplied input. An attacker could exploit this vulnerability by persuading a user of an affected interface to view a page containing malicious HTML or script content. A successful exploit could allow the attacker to execute arbitrary script code in the context of the affected interface or access sensitive, browser-based information. To exploit this vulnerability, the attacker would need to have valid credentials to access the web-based management interface of the affected device. Cisco has not released software updates to address this vulnerability.

At a glance

Exploitability

Can be exploited over the network with an admin-level account, but needs a user to act. Limited direct impact.

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

1. 2023-06-28 15:15 UTC PublishedDisclosed publicly on CVE.org and NVD
2. 2026-06-17 05:29 UTC Last updatedMost recent change to the record

Why it ranks here

• Exploited in the wild: no, CISA does not list it.
• Exploit odds: 0.5% in the next 30 days (EPSS).
• Severity: 4.8 MEDIUM (CVSS).
• Fix: a patch or advisory is linked.

Details

Published

2023-06-28 15:15 UTC

Last modified

2026-06-17 05:29 UTC

Exploit probability

0.5% · EPSS, next 30 days

Weakness

CWE-87

Record status

Modified

Affected

• Cisco sf200-24 Firmware 1.4.11.02
• Cisco sf200-24fp Firmware 1.4.11.02
• Cisco sf200-24p Firmware 1.4.11.02
• Cisco sf200-48 Firmware 1.4.11.02
• Cisco sf200-48p Firmware 1.4.11.02
• Cisco sf300-08 Firmware 1.4.11.02
• Cisco sf300-24 Firmware 1.4.11.02
• Cisco sf300-24mp Firmware 1.4.11.02

Attack profile CVSS 3.1 · 4.8

Attack vector

Network

Complexity

Low

Privileges needed

High

User interaction

Required

Scope

Changed

Confidentiality

Low

Integrity

Low

Availability

None

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-2023-20188.md and follow it. Check whether this project is affected by CVE-2023-20188. 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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