CVE-2023-20157

Name: CVE-2023-20157
Creator: NVD / NIST
Published: 2023-05-18T03:15:10.047+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.8/10EPSS 1.18%

Last modified Jun 17, 2026

CVE-2023-20157 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. Multiple vulnerabilities in the web-based user interface of certain Cisco Small Business Series Switches could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition or execute arbitrary code with root privileges on an affected device. These vulnerabilities are due to improper validation of requests that are sent to the web interface. EPSS estimates a 1.18% chance of exploitation in the next 30 days.

Description

Multiple vulnerabilities in the web-based user interface of certain Cisco Small Business Series Switches could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition or execute arbitrary code with root privileges on an affected device. These vulnerabilities are due to improper validation of requests that are sent to the web interface. For more information about these vulnerabilities, see the Details section of this advisory.

Metrics

CVSS 3.1

9.8/10

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

EPSS Probability

1.18%

63.8th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Cisco	Business 250-16p-2g Firmware	All versions
Cisco	Business 250-16t-2g Firmware	All versions
Cisco	Business 250-24fp-4g Firmware	All versions
Cisco	Business 250-24fp-4x Firmware	All versions
Cisco	Business 250-24p-4g Firmware	All versions
Cisco	Business 250-24p-4x Firmware	All versions
Cisco	Business 250-24pp-4g Firmware	All versions
Cisco	Business 250-24t-4g Firmware	All versions
Cisco	Business 250-24t-4x Firmware	All versions
Cisco	Business 250-48p-4g Firmware	All versions
Cisco	Business 250-48p-4x Firmware	All versions
Cisco	Business 250-48pp-4g Firmware	All versions
Cisco	Business 250-48t-4g Firmware	All versions
Cisco	Business 250-48t-4x Firmware	All versions
Cisco	Business 250-8fp-E-2g Firmware	All versions
Cisco	Business 250-8p-E-2g Firmware	All versions
Cisco	Business 250-8pp-D Firmware	All versions
Cisco	Business 250-8pp-E-2g Firmware	All versions
Cisco	Business 250-8t-D Firmware	All versions
Cisco	Business 250-8t-E-2g Firmware	All versions
Cisco	Business 350-12np-4x Firmware	All versions
Cisco	Business 350-12xs Firmware	All versions
Cisco	Business 350-12xt Firmware	All versions
Cisco	Business 350-16fp-2g Firmware	All versions
Cisco	Business 350-16p-2g Firmware	All versions
Cisco	Business 350-16p-E-2g Firmware	All versions
Cisco	Business 350-16t-2g Firmware	All versions
Cisco	Business 350-16t-E-2g Firmware	All versions
Cisco	Business 350-16xts Firmware	All versions
Cisco	Business 350-24fp-4g Firmware	All versions
Cisco	Business 350-24fp-4x Firmware	All versions
Cisco	Business 350-24mgp-4x Firmware	All versions
Cisco	Business 350-24ngp-4x Firmware	All versions
Cisco	Business 350-24p-4g Firmware	All versions
Cisco	Business 350-24p-4x Firmware	All versions
Cisco	Business 350-24s-4g Firmware	All versions
Cisco	Business 350-24t-4g Firmware	All versions
Cisco	Business 350-24t-4x Firmware	All versions
Cisco	Business 350-24xs Firmware	All versions
Cisco	Business 350-24xt Firmware	All versions
Cisco	Business 350-24xts Firmware	All versions
Cisco	Business 350-48fp-4g Firmware	All versions
Cisco	Business 350-48fp-4x Firmware	All versions
Cisco	Business 350-48ngp-4x Firmware	All versions
Cisco	Business 350-48p-4g Firmware	All versions
Cisco	Business 350-48p-4x Firmware	All versions
Cisco	Business 350-48t-4g Firmware	All versions
Cisco	Business 350-48t-4x Firmware	All versions
Cisco	Business 350-48xt-4x Firmware	All versions
Cisco	Business 350-8fp-2g Firmware	All versions

Showing 50 of 229 affected configurations. See NVD for the full list.

References

Timeline

Published: May 18, 2023
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2023-20157?

How severe is CVE-2023-20157?

CVE-2023-20157 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 1.18% probability of exploitation in the next 30 days.

How do I fix CVE-2023-20157?

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-2023-20157?

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

Scan your code now

Source: NVD / NIST