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CVE-2020-3121

MEDIUMCVSS 6.1/10EPSS 1.07%

Last modified

CVE-2020-3121 is a medium-severity vulnerability rated 6.1/10 on the CVSS scale. 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 scripting (XSS) attack against a user of the interface. The vulnerability is due to insufficient validation of user-supplied input by the web-based management interface of the affected device. EPSS estimates a 1.07% chance of exploitation in the next 30 days.

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 scripting (XSS) attack against a user of the interface. The vulnerability is due to insufficient validation of user-supplied input by the web-based management interface of the affected device. An attacker could exploit this vulnerability by persuading a user of the interface to click a malicious link and access a specific page. 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.

Metrics

CVSS 3.1
6.1/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

EPSS Probability
1.07%

60.5th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
CiscoSg250x-24 Firmware<= 2.5.0.90
CiscoSg250x-24p Firmware<= 2.5.0.90
CiscoSg250x-48 Firmware<= 2.5.0.90
CiscoSg250x-48p Firmware<= 2.5.0.90
CiscoSg250-08 Firmware<= 2.5.0.90
CiscoSg250-08hp Firmware<= 2.5.0.90
CiscoSg250-10p Firmware<= 2.5.0.90
CiscoSg250-18 Firmware<= 2.5.0.90
CiscoSg250-26 Firmware<= 2.5.0.90
CiscoSg250-26hp Firmware<= 2.5.0.90
CiscoSg250-26p Firmware<= 2.5.0.90
CiscoSg250-50 Firmware<= 2.5.0.90
CiscoSg250-50hp Firmware<= 2.5.0.90
CiscoSg250-50p Firmware<= 2.5.0.90
CiscoSg250-24 Firmware<= 2.5.0.90
CiscoSg250-24p Firmware<= 2.5.0.90
CiscoSg250-48 Firmware<= 2.5.0.90
CiscoSg250-48hp Firmware<= 2.5.0.90
CiscoSf350-48 Firmware<= 2.5.0.90
CiscoSf350-48p Firmware<= 2.5.0.90
CiscoSf350-48mp Firmware<= 2.5.0.90
CiscoSg350-10 Firmware<= 2.5.0.90
CiscoSg350-10p Firmware<= 2.5.0.90
CiscoSg350-10mp Firmware<= 2.5.0.90
CiscoSg355-10mp Firmware<= 2.5.0.90
CiscoSg350-28 Firmware<= 2.5.0.90
CiscoSg350-28p Firmware<= 2.5.0.90
CiscoSg350-28mp Firmware<= 2.5.0.90
CiscoSx550x-16ft Firmware<= 2.5.0.90
CiscoSx550x-24ft Firmware<= 2.5.0.90
CiscoSx550x-12ft Firmware<= 2.5.0.90
CiscoSx550x-24 Firmware<= 2.5.0.90
CiscoSx550x-52 Firmware<= 2.5.0.90
CiscoSg550x-24 Firmware<= 2.5.0.90
CiscoSg550x-24p Firmware<= 2.5.0.90
CiscoSg550x-24mp Firmware<= 2.5.0.90
CiscoSg550x-24mpp Firmware<= 2.5.0.90
CiscoSg550x-48 Firmware<= 2.5.0.90
CiscoSg550x-48p Firmware<= 2.5.0.90
CiscoSg550x-48mp Firmware<= 2.5.0.90
CiscoSf550x-24 Firmware<= 2.5.0.90
CiscoSf550x-24p Firmware<= 2.5.0.90
CiscoSf550x-48 Firmware<= 2.5.0.90
CiscoSf550x-48p Firmware<= 2.5.0.90
CiscoSf550x-48mp Firmware<= 2.5.0.90

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2020-3121?
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 scripting (XSS) attack against a user of the interface. The vulnerability is due to insufficient validation of user-supplied input by the web-based management interface of the affected device. An attacker could exploit this vulnerability by persuading a user of the interface to click a malicious link and access a specific page. 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.
How severe is CVE-2020-3121?
CVE-2020-3121 has a CVSS score of 6.1/10 (MEDIUM severity). The EPSS model estimates a 1.07% probability of exploitation in the next 30 days.
How do I fix CVE-2020-3121?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2020-3121?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST