What is CVE-2023-20162?

CVE-2023-20162 is a high-severity vulnerability in Cisco Business 250-16p-2g, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 8.6/10. Published 2023-05-18.

How severe is CVE-2023-20162?

High severity. CVSS v3 base score is 8.6 out of 10.

Buffer overflow in Cisco Business 250-16p-2g

CVE-2023-20162

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.

Vulnerability class: Buffer Overflow

Published 2023-05-18 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 8.6 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.012 (67.3th percentile), scored 2026-10-19.

Low probability of exploitation in the next 30 days, but still tracked. 67th percentile — 67.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.012 · newest: 0.012 · change: 0.000

Affected products

Weakness classification (CWE)

CWE-120 — Buffer Copy without Checking Size of Input (Classic Buffer Overflow)

References

sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-… (vendor-advisory, Vendor Advisory)

Frequently asked questions

What is CVE-2023-20162?: CVE-2023-20162 is a high-severity vulnerability in Cisco Business 250-16p-2g, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 8.6/10. Published 2023-05-18.
How severe is CVE-2023-20162?: High severity. CVSS v3 base score is 8.6 out of 10.