---
title: "CVE-2023-20118: Cisco Small Business RV Series Routers Command Injection Vulnerability"
url: https://erroneo.us/security/cve/CVE-2023-20118/
description: "CVE-2023-20118 (Cisco Small Business RV Series Routers): Exploited in the wild (CISA KEV). A vulnerability in the web-based management interface of Cisco…"
type: vulnerability-record
section: "Security Digest"
date_published: 2023-04-05
date_modified: 2025-10-21
publisher: erroneo.us
author: erroneo.us Security Desk
cve: "CVE-2023-20118"
kev: true
cvss: 6.5
epss: 0.54107
license: All rights reserved. Quote with attribution and a link.
---

# CVE-2023-20118: Cisco Small Business RV Series Routers Command Injection Vulnerability

**Signal:** Exploited: patch now if you run it. CISA has confirmed exploitation in the wild. (Computed from CISA KEV, EPSS and CVSS; not an editorial verdict.)

## Should you act?

- Yes, if you run Cisco Small Business RV Series Routers. CISA added this CVE to its Known Exploited Vulnerabilities catalog on 2025-03-03, which means there is reliable evidence of exploitation in the wild. US federal agencies must remediate by 2025-03-24 ; treat that as the outer limit, not the target.
- EPSS 54.1% , percentile 99: FIRST’s model estimates a 54.1% chance of exploitation activity in the next 30 days, higher than 99% of all scored CVEs (very high). EPSS is a probability, not a verdict.
- Needs an account (high (admin)). Exposure depends on who can log in.

## What it is

A vulnerability in the web-based management interface of Cisco Small Business Routers RV016, RV042, RV042G, RV082, RV320, and RV325 Routers could allow an authenticated, remote attacker to execute arbitrary commands on an affected device. This vulnerability is due to improper validation of user input within incoming HTTP packets. An attacker could exploit this vulnerability by sending a crafted HTTP request to the web-based management interface. A successful exploit could allow the attacker to gain root-level privileges and access unauthorized data. To exploit this vulnerability, an attacker would need to have valid administrative credentials on the affected device. Cisco has not and will not release software updates that address this vulnerability. However, administrators may disable the affected feature as described in the Workarounds ["#workarounds"] section. {{value}} ["%7b%7bvalue%7d%7d"])}]]

## Affected products (CVE record)

- Cisco Cisco Small Business RV Series Router Firmware: 1.0.1.17, 1.0.2.03, 1.1.0.09, 1.1.1.19, 1.1.1.06, 1.2.1.13, 1.2.1.14, 1.3.1.12, 1.3.2.02, 1.3.1.10, 1.4.2.15, 1.4.2.17

## Severity

- cisco CVSS 3.1: 6.5 `CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N`

## Exploitation

- CISA KEV: added 2025-03-03; federal due date 2025-03-24. Known ransomware use: Unknown.
- CISA required action: Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
- CISA SSVC assessment: exploitation active , automatable no , technical impact total .
- FIRST EPSS (model of 2026-10-21): 54.11% probability of exploitation activity in the next 30 days; percentile 99.

## Sources

- [Listed in CISA KEV notes (sec.cloudapps.cisco.com)](https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-sbr042-multi-vuln-ej76Pke5)
- [CVE.org record CVE-2023-20118](https://www.cve.org/CVERecord?id=CVE-2023-20118)
- [NVD entry CVE-2023-20118](https://nvd.nist.gov/vuln/detail/CVE-2023-20118)
- [CISA Known Exploited Vulnerabilities catalog entry](https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-20118)

---
Source page: https://erroneo.us/security/cve/CVE-2023-20118/ · Security Digest: https://erroneo.us/security/ · More: https://erroneo.us/llms.txt