CVE-2019-1943
Cisco Small Business Series Switches Open Redirect Vulnerability
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.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- High
- Privileges needed
- None
- User interaction
- Required
What an attacker can affect
- Confidentiality
- Low
- Integrity
- Low
- Availability
- None
Exploit likelihood
What each source reports
CVE List Score used
4.7
Cisco Small Business Series Switches Open Redirect Vulnerability
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.
- Record
CVE-2019-1943- CVSS 3.0
- 4.7 Medium
CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:L/A:N - Weakness
- CWE-601
- Updated
- 2026-11-02
EUVDEUVD-2019-10500
4.7
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.
- Record
EUVD-2019-10500- CVSS 3.0
- 4.7 Medium
CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:L/A:N - Updated
- 2026-11-03
GitHub AdvisoriesGHSA-c4p7-9fgh-g95m
6.1
A vulnerability in the web interface of Cisco Small Business 200, 300, and 500 Series Switches...
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.
- Record
GHSA-c4p7-9fgh-g95m- CVSS 3.0
- 6.1 Medium
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N - Weakness
- CWE-601
- Updated
- 2026-11-02
NVD
4.7
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.
- Record
CVE-2019-1943- CVSS 3.0
- 4.7 Medium
CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:L/A:N - CVSS 3.0
- 6.1 Medium
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N - CVSS 2.0
- 5.8 Medium
AV:N/AC:M/Au:N/C:P/I:P/A:N - Weakness
- CWE-601
- Updated
- 2026-11-02
Affected products
- cisco small business 300 series managed switches
- cisco sf200-24 firmware
- cisco sf200-24fp firmware
- cisco sf200-24p firmware
- cisco sf200-48 firmware
- cisco sf200-48p firmware
- cisco sf300-08 firmware
- cisco sf300-24 firmware
- cisco sf300-24mp firmware
- cisco sf300-24p firmware
- cisco sf300-24pp firmware
- cisco sf300-48 firmware
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- cisco sf300-48p firmware
- cisco sf300-48pp firmware
- cisco sf302-08 firmware
- cisco sf302-08mp firmware
- cisco sf302-08mpp firmware
- cisco sf302-08p firmware
- cisco sf302-08pp firmware
- cisco sf500-24 firmware
- cisco sf500-24p firmware
- cisco sf500-48 firmware
- cisco sf500-48p firmware
- cisco sg200-08 firmware
- cisco sg200-08p firmware
- cisco sg200-10fp firmware
- cisco sg200-18 firmware
- cisco sg200-26 firmware
- cisco sg200-26fp firmware
- cisco sg200-26p firmware
- cisco sg200-50 firmware
- cisco sg200-50fp firmware
- cisco sg200-50p firmware
- cisco sg300-10 firmware
- cisco sg300-10mp firmware
- cisco sg300-10mpp firmware
- cisco sg300-10p firmware
- cisco sg300-10pp firmware
- cisco sg300-10sfp firmware
- cisco sg300-20 firmware
- cisco sg300-28 firmware
- cisco sg300-28mp firmware
- cisco sg300-28p firmware
- cisco sg300-28pp firmware
- cisco sg300-52 firmware
- cisco sg300-52mp firmware
- cisco sg300-52p firmware
- cisco sg500-28 firmware
- cisco sg500-28mpp firmware
- cisco sg500-28p firmware
- cisco sg500-52 firmware
- cisco sg500-52mp firmware
- cisco sg500-52p firmware
- cisco sg500x-24 firmware
- cisco sg500x-24p firmware
- cisco sg500x-48 firmware
- cisco sg500x-48p firmware
- cisco sg500xg-8f8t firmware
Public exploits
Links only. Every CVE stores no exploit code.
| Source | Link | Date |
|---|---|---|
| Exploit-DB | CISCO Small Business 200 / 300 / 500 Switches - Multiple Vulnerabilities | 2019-07-15 |
| Nuclei | Cisco Small Business 200,300 and 500 Series Switches - Open Redirect |
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases, published | EUVD | |
| first indexed | CVE List, Exploit-DB, GitHub Advisories, Nuclei, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2019-1943 is a medium vulnerability (CVSS 4.7) in Cisco Small Business 300 Series Managed Switches, published July 17, 2019. Public exploit code exists. EPSS puts the chance of exploitation in the next 30 days at 9.69%, the 95th percentile. No source names a fixed version.