What is CVE-2023-20159?

CVE-2023-20159 is a high-severity vulnerability in Cisco Small Business Smart And Managed Switches, 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-2023-20159?

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

Is CVE-2023-20159 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Buffer overflow in Cisco Small Business Smart And Managed Switches

CVE-2023-20159

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 privi…

Vulnerability class: Buffer Overflow

EPSS: 0.049 (89.8th percentile) — read the EPSS interpretation.

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.

Affected products

Cisco Small Business Smart And Managed Switches — versions n/a

Weakness classification (CWE)

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

Public proof-of-concept exploits

netlas-io/netlas-dorks

References

20230517 Cisco Small Business Series Switches Buffer Overflow Vulnerabilities (vendor-advisory)

Frequently asked questions

What is CVE-2023-20159?: CVE-2023-20159 is a high-severity vulnerability in Cisco Small Business Smart And Managed Switches, 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-2023-20159?: High severity. CVSS v3 base score is 8.6 out of 10.
Is CVE-2023-20159 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.