Skip to content
Weekly Signal
Live intelligence Updated 20 Aug 2026 · 12:21 UTC

Cisco · Rv340 Firmware, Rv340w Firmware, Rv345 Firmware +2 more

CVE-2022-20699

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

Recommended action

Validate affected assets and exposure now, then remediate on an accelerated schedule. Cisco Security advisory Cisco Sa Smb Mult Vuln KA9PK6D

View response plan
CVSS9.8
EPSS72.5%
KEVYes
ExploitationConfirmed exploitation
RemediationNot yet verified ↓

Assessment

Why it matters

CISA lists this vulnerability as known to be exploited; exploitation is confirmed; EPSS is 72.5%; technical severity is CVSS 9.8.

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.

Who should care

  • Teams operating Rv340 Firmware, Rv340w Firmware, Rv345 Firmware +2 more
  • Vulnerability and exposure management teams
  • Security operations teams monitoring exploitation activity

Response plan

What I would do

  1. Confirm whether Rv340 Firmware, Rv340w Firmware, Rv345 Firmware +2 more is present in the environment.
  2. Identify affected versions and establish whether vulnerable services are exposed or reachable.
  3. Cisco Security advisory Cisco Sa Smb Mult Vuln KA9PK6D
  4. Review relevant security telemetry for evidence of attempted or successful exploitation.
  5. Document the remediation decision and track it to verified completion.

Treatment intelligence

Remediation intelligence

Not yet verified

Vendor sources are listed before government and third-party guidance. Confirm product applicability and change prerequisites before deployment.

Verification noteAutomated link verification has not completed for this guidance yet.

Advisory

Required Action

Technical details

CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CWE
CWE-785
Affected versions
Cisco Rv340 Firmware (End Including 1.0.03.24); Cisco Rv340w Firmware (End Including 1.0.03.24); Cisco Rv345 Firmware (End Including 1.0.03.24); Cisco Rv345p Firmware (End Including 1.0.03.24); Cisco Small Business RV160, RV260, RV340, and RV345 Series Routers
Fixed versions
No explicit fixed version is currently recorded.
Published
10 February 2022
Attack vector
Network
Privileges required
None
User interaction
None

Signal timeline

  1. CVE published
  2. Added to CISA KEV
  3. Latest EPSS score: 72.5%
  4. Signal calculated at 82

External references

Live public intelligence This assessment combines public-source evidence. Validate the affected product, version and exposure against your own environment before making a risk decision.