CVE-2019-12636: Cisco Small Business Smart and Managed Switches Cross-Site Request Forgery Vulnerability

Severity: high (CVSS 8.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.6% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2019-10-16 · updated 2026-06-17
Weakness: CWE-352

Description

A vulnerability in the web-based management interface of Cisco Small Business Smart and Managed Switches could allow an unauthenticated, remote attacker to conduct a cross-site request forgery (CSRF) attack on an affected system. The vulnerability is due to insufficient CSRF protections for the web-based management interface on an affected device. An attacker could exploit this vulnerability by persuading a user of the interface to follow a malicious link. A successful exploit could allow the attacker to perform arbitrary actions with the privilege level of the targeted user. If the user has administrative privileges, the attacker could alter the configuration, execute commands, or cause a denial of service (DoS) condition on an affected device.

Affected products

Cisco Sf200-24 Firmware: before 1.4.11 — fixed in 1.4.11
Cisco Sf200-24Fp Firmware: before 1.4.11 — fixed in 1.4.11
Cisco Sf200-24P Firmware: before 1.4.11.02 — fixed in 1.4.11.02
Cisco Sf200-48 Firmware: before 1.4.11.02 — fixed in 1.4.11.02
Cisco Sf200-48P Firmware: before 1.4.11.02 — fixed in 1.4.11.02
Cisco Sf200E-24 Firmware: before 1.4.11.02 — fixed in 1.4.11.02
Cisco Sf200E-24P Firmware: before 1.4.11.02 — fixed in 1.4.11.02
Cisco Sf200E-48 Firmware: before 1.4.11.02 — fixed in 1.4.11.02
Cisco Sf200E48P Firmware: before 1.4.11.02 — fixed in 1.4.11.02
Cisco Sf250-08 Firmware: before 2.5.0.90 — fixed in 2.5.0.90
Cisco Sf250-08Hp Firmware: before 2.5.0.90 — fixed in 2.5.0.90
Cisco Sf250-10P Firmware: before 2.5.0.90 — fixed in 2.5.0.90
Cisco Sf250-18 Firmware: before 2.5.0.90 — fixed in 2.5.0.90
Cisco Sf250-24 Firmware: before 2.5.0.90 — fixed in 2.5.0.90
Cisco Sf250-24P Firmware: before 2.5.0.90 — fixed in 2.5.0.90
Cisco Sf250-26 Firmware: before 2.5.0.90 — fixed in 2.5.0.90
Cisco Sf250-26Hp Firmware: before 2.5.0.90 — fixed in 2.5.0.90
Cisco Sf250-26P Firmware: before 2.5.0.90 — fixed in 2.5.0.90
Cisco Sf250-48 Firmware: before 2.5.0.90 — fixed in 2.5.0.90
Cisco Sf250-48Hp Firmware: before 2.5.0.90 — fixed in 2.5.0.90
Cisco Sf250-50 Firmware: before 2.5.0.90 — fixed in 2.5.0.90
Cisco Sf250-50Hp Firmware: before 2.5.0.90 — fixed in 2.5.0.90
Cisco Sf250-50P Firmware: before 2.5.0.90 — fixed in 2.5.0.90
Cisco Sf250X-24 Firmware: before 2.5.0.90 — fixed in 2.5.0.90
Cisco Sf250X-24P Firmware: before 2.5.0.90 — fixed in 2.5.0.90
Cisco Sf250X-48 Firmware: before 2.5.0.90 — fixed in 2.5.0.90
Cisco Sf250X-48P Firmware: before 2.5.0.90 — fixed in 2.5.0.90
Cisco Sf300-08 Firmware: before 1.4.11.02 — fixed in 1.4.11.02
Cisco Sf300-24 Firmware: before 1.4.11.02 — fixed in 1.4.11.02
Cisco Sf300-24Mp Firmware: before 1.4.11.02 — fixed in 1.4.11.02

How to fix

Upgrade to a fixed version: Cisco Sf200-24 Firmware 1.4.11; Cisco Sf200-24Fp Firmware 1.4.11; 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 Sf200E-24 Firmware 1.4.11.02; Cisco Sf200E-24P Firmware 1.4.11.02; Cisco Sf200E-48 Firmware 1.4.11.02; Cisco Sf200E48P Firmware 1.4.11.02; Cisco Sf250-08 Firmware 2.5.0.90; Cisco Sf250-08Hp Firmware 2.5.0.90; Cisco Sf250-10P Firmware 2.5.0.90. Check the vendor advisory for mitigations.

References

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