CVE intelligence and bounded remediation

CVE-2022-20923 — Cisco Rv110W Firmware security vulnerability

Critical CVSS 9.8

A vulnerability in the IPSec VPN Server authentication functionality of Cisco Small Business RV110W, RV130, RV130W, and RV215W Routers could allow an unauthenticated, remote attacker to bypass authentication controls and access the IPSec VPN network. This vulnerability is due to the improper implementation of the password validation algorithm. An attacker could exploit this vulnerability by logging in to the VPN from an affected device with crafted credentials. A successful exploit could allow the attacker to bypass authentication and access the IPSec VPN network. The attacker may obtain privileges that are the same level as an administrative user, depending on the crafted credentials that are used. Cisco has not released software updates that address this vulnerability.

Severity
Critical
CVSS
9.8 (3.1)
Published
2022-09-08
CISA KEV
Not currently listed
Ecosystem
operating-system
Weaknesses
CWE-303, CWE-287

Affected products

  • cisco / rv110w_firmware / 1.0.3.55
  • cisco / rv110w_firmware / 1.2.2.8
  • cisco / rv110w_firmware / 1.3.1.7
  • cisco / rv130_firmware / 1.0.3.55
  • cisco / rv130_firmware / 1.2.2.8
  • cisco / rv130_firmware / 1.3.1.7

Showing 6 representative product identities from 12 source matches. Confirm exact affected versions with the linked vendor and NVD evidence.

Matched remediation archetype

Authentication bypass and missing authentication

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Check exposure

  • Map every affected endpoint and protocol path, including alternate ports, legacy routes, recovery flows, service accounts, and machine-to-machine access.
  • Confirm which deployments enable the affected authentication mode and whether the interface is reachable from untrusted networks.
  • Review session, token, credential, and proxy trust configuration without attempting account takeover.

Remediate safely

  • Apply the supported fix and centralize fail-closed authentication before protected request handling.
  • Remove default or embedded credentials, rotate affected secrets and sessions, and bind authentication decisions to the intended audience and channel.
  • Add negative tests for alternate routes, malformed or absent credentials, recovery flows, and proxy-derived identity.

Authoritative sources

Complete CVE record and remediation plan

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