What’s Vulnerable › Vulnerabilities

CVE-2019-15993: Cisco Small Business Switches Information Disclosure Vulnerability

• Severity: medium (CVSS 5.3 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 10.3% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2020-09-23 · updated 2026-06-17
• Weakness: CWE-16

Description

A vulnerability in the web UI of Cisco Small Business Switches could allow an unauthenticated, remote attacker to access sensitive device information. The vulnerability exists because the software lacks proper authentication controls to information accessible from the web UI. An attacker could exploit this vulnerability by sending a malicious HTTP request to the web UI of an affected device. A successful exploit could allow the attacker to access sensitive device information, which includes configuration files.

Affected products

• Cisco Sf200-24 Firmware: before 1.4.11.4 — fixed in 1.4.11.4
• Cisco Sf200-24Fp Firmware: before 1.4.11.4 — fixed in 1.4.11.4
• Cisco Sf200-24P Firmware: before 1.4.11.4 — fixed in 1.4.11.4
• Cisco Sf200-48 Firmware: before 1.4.11.4 — fixed in 1.4.11.4
• Cisco Sf200-48P Firmware: before 1.4.11.4 — fixed in 1.4.11.4
• Cisco Sf250-24 Firmware: before 2.5.0.92 — fixed in 2.5.0.92
• Cisco Sf250-24P Firmware: before 2.5.0.92 — fixed in 2.5.0.92
• Cisco Sf250-48 Firmware: before 2.5.0.92 — fixed in 2.5.0.92
• Cisco Sf250-48Hp Firmware: before 2.5.0.92 — fixed in 2.5.0.92
• Cisco Sf300-08 Firmware: before 1.4.11.4 — fixed in 1.4.11.4
• Cisco Sf300-24 Firmware: before 1.4.11.4 — fixed in 1.4.11.4
• Cisco Sf300-24Mp Firmware: before 1.4.11.4 — fixed in 1.4.11.4
• Cisco Sf300-24P Firmware: before 1.4.11.4 — fixed in 1.4.11.4
• Cisco Sf300-24Pp Firmware: before 1.4.11.4 — fixed in 1.4.11.4
• Cisco Sf300-48 Firmware: before 1.4.11.4 — fixed in 1.4.11.4
• Cisco Sf300-48P Firmware: before 1.4.11.4 — fixed in 1.4.11.4
• Cisco Sf300-48Pp Firmware: before 1.4.11.4 — fixed in 1.4.11.4
• Cisco Sf302-08 Firmware: before 1.4.11.4 — fixed in 1.4.11.4
• Cisco Sf302-08Mp Firmware: before 1.4.11.4 — fixed in 1.4.11.4
• Cisco Sf302-08Mpp Firmware: before 1.4.11.4 — fixed in 1.4.11.4
• Cisco Sf302-08P Firmware: before 1.4.11.4 — fixed in 1.4.11.4
• Cisco Sf302-08Pp Firmware: before 1.4.11.4 — fixed in 1.4.11.4
• Cisco Sf350-48 Firmware: before 2.5.0.92 — fixed in 2.5.0.92
• Cisco Sf350-48Mp Firmware: before 2.5.0.92 — fixed in 2.5.0.92
• Cisco Sf350-48P Firmware: before 2.5.0.92 — fixed in 2.5.0.92
• Cisco Sf500-24 Firmware: before 1.4.11.4 — fixed in 1.4.11.4
• Cisco Sf500-24P Firmware: before 1.4.11.4 — fixed in 1.4.11.4
• Cisco Sf500-48 Firmware: before 1.4.11.4 — fixed in 1.4.11.4
• Cisco Sf500-48P Firmware: before 1.4.11.4 — fixed in 1.4.11.4
• Cisco Sf550X-24 Firmware: before 2.5.0.92 — fixed in 2.5.0.92

How to fix

Upgrade to a fixed version: Cisco Sf200-24 Firmware 1.4.11.4; Cisco Sf200-24Fp Firmware 1.4.11.4; Cisco Sf200-24P Firmware 1.4.11.4; Cisco Sf200-48 Firmware 1.4.11.4; Cisco Sf200-48P Firmware 1.4.11.4; Cisco Sf250-24 Firmware 2.5.0.92; Cisco Sf250-24P Firmware 2.5.0.92; Cisco Sf250-48 Firmware 2.5.0.92; Cisco Sf250-48Hp Firmware 2.5.0.92; Cisco Sf300-08 Firmware 1.4.11.4; Cisco Sf300-24 Firmware 1.4.11.4; Cisco Sf300-24Mp Firmware 1.4.11.4. Check the vendor advisory for mitigations.

References

• http://packetstormsecurity.com/files/171723/Cisco-Dell-Netgear-Information-Disclosure-Hash-Decrypter.html
• https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20200129-smlbus-switch-disclos
• http://packetstormsecurity.com/files/171723/Cisco-Dell-Netgear-Information-Disclosure-Hash-Decrypter.html
• https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20200129-smlbus-switch-disclos

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