SOC status:Duty analyst on shift

UK Cyber Defence
VulnerabilityModified

CVE-2023-20161

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…

CRITICAL 9.8EPSS 11.1%

Does this matter?

EPSS puts the probability of exploitation in the next 30 days at 11.1%, higher than 96% of all known CVEs. Patch or mitigate before the next change window.

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.

CVSS 3.1
9.8 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS
11.11% probability · 96th percentile
Public exploits
None in Exploit-DB
CISA KEV
Not listed
Weakness
CWE-120
Affected
cisco/business 250-16p-2g firmware · cisco/business 250-16t-2g firmware · cisco/business 250-24fp-4g firmware · cisco/business 250-24fp-4x firmware · cisco/business 250-24p-4g firmware · cisco/business 250-24p-4x firmware · cisco/business 250-24pp-4g firmware · cisco/business 250-24t-4g firmware · cisco/business 250-24t-4x firmware · cisco/business 250-48p-4g firmware · cisco/business 250-48p-4x firmware · cisco/business 250-48pp-4g firmware · cisco/business 250-48t-4g firmware · cisco/business 250-48t-4x firmware · cisco/business 250-8fp-e-2g firmware · cisco/business 250-8p-e-2g firmware · cisco/business 250-8pp-d firmware · cisco/business 250-8pp-e-2g firmware · cisco/business 250-8t-d firmware · cisco/business 250-8t-e-2g firmware · +40 more
Source
psirt@cisco.com
EPSS trend
0%8%15%26 October 2026: 11.11%26 October 202626 October 2026

EPSS 11.1% since 26 October 2026; no change recorded yet. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”. Points are recorded when the score first appears and whenever it moves by a percentage point or more.

Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.