Cisco Small Business RV Series Routers Stack-based Buffer Overflow Vulnerability

Are you affected?

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• cpe cisco/rv340 firmwareversion unspecified
• cpe cisco/rv340w firmwareversion unspecified
• cpe cisco/rv345 firmwareversion unspecified
• cpe cisco/rv345p firmwareversion unspecified
• vendor Cisco RV Series Routersversion unspecified
• vendor Cisco Small Business RV160, RV260, RV340, and RV345 Series Routersversion unspecified

How to fix CVE-2022-20708

• Recommended remediation

  Apply updates per vendor instructions. CISA due date Mar 17, 2022.

• Official advisories

  • CISA KEV · cisa.gov
  • CVE.org · cve.org
  • FIRST EPSS · first.org
  • NIST NVD · nvd.nist.gov
  • VulnCheck KEV · vulncheck.com

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Technology hubs

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

1. Feb 10, 2022 · Catalog

   Detected

   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 sect

2. Mar 3, 2022 · CISA KEV

   Known exploited

   Apply updates per vendor instructions.

3. Mar 17, 2022 · CISA KEV

   Remediation due

   Apply updates per vendor instructions.

4. Jun 16, 2026 · Catalog

   Updated

   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 sect

Sources

• CISA KEVConfirmed exploitationCVE-2022-20708

  A vulnerability 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, or cause a denial of service (DoS).

  cisa.gov
• CVE.orgVulnerability recordCVE-2022-20708

  Official CVE identifier

  cve.org
• FIRST EPSSExploitation probabilityCVE-2022-20708

  30-day exploitation probability 14.9%

  first.org
• NIST NVDVulnerability recordCVE-2022-20708

  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 ru

  nvd.nist.gov
• VulnCheck KEVConfirmed exploitationCVE-2022-20708

  A vulnerability 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 unsi

  vulncheck.com

References

• CISA note · nvd.nist.gov
• Vendor Advisory · tools.cisco.com
• US Government Resource · cisa.gov
• VulnCheck exploitation evidence · cisa.gov
• Third Party Advisory · zerodayinitiative.com

Freshness

Last verified in this catalog Oct 17, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.