CVE-2019-1943

What it is

A vulnerability in the web interface of Cisco Small Business 200, 300, and 500 Series Switches software could allow an unauthenticated, remote attacker to redirect a user to a malicious web page. The vulnerability is due to improper input validation of the parameters of an HTTP request. An attacker could exploit this vulnerability by intercepting a user's HTTP request and modifying it into a request that causes the web interface to redirect the user to a specific malicious URL. This type of vulnerability is known as an open redirect attack and is used in phishing attacks that get users to unknowingly visit malicious sites.

At a glance

Exploitability

Can be exploited over the network without logging in, but needs a user to act. Limited direct impact.

Exploit odds

9.7% chance of exploitation in the next 30 days (EPSS).

Fix

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

Timeline

1. 2019-07-17 21:15 UTC PublishedDisclosed publicly on CVE.org and NVD
2. 2026-06-17 02:29 UTC Last updatedMost recent change to the record

Why it ranks here

• Exploited in the wild: no, CISA does not list it.
• Exploit odds: 9.7% in the next 30 days (EPSS).
• Severity: 4.7 MEDIUM (CVSS).
• Fix: a patch or advisory is linked.

Details

Published

2019-07-17 21:15 UTC

Last modified

2026-06-17 02:29 UTC

Exploit probability

9.7% · EPSS, next 30 days

Weakness

CWE-601

Record status

Modified

Affected

• Cisco sg200-50 Firmware
• Cisco sg200-50p Firmware
• Cisco sg200-50fp Firmware
• Cisco sg200-26 Firmware
• Cisco sg200-26p Firmware
• Cisco sg200-26fp Firmware
• Cisco sg200-18 Firmware
• Cisco sg200-10fp Firmware

Attack profile CVSS 3.0 · 4.7

Attack vector

Network

Complexity

High

Privileges needed

None

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-2019-1943.md and follow it. Check whether this project is affected by CVE-2019-1943. 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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