Auth bypass in Cisco Small Business Rv Series Router Firmware
CVE-2022-20923
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.
EPSS: 0.009 (55.1th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 4.0 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:L/A:N.
Affected products
- Cisco Small Business Rv Series Router Firmware — versions n/a
- Cisco Rv110w
- Cisco Rv110w_firmware — versions 1.0.3.55, 1.2.2.8, 1.3.1.7
- Cisco Rv130
- Cisco Rv130_firmware — versions 1.0.3.55, 1.2.2.8, 1.3.1.7
- Cisco Rv130w
- Cisco Rv130w_firmware — versions 1.0.3.55, 1.2.2.8, 1.3.1.7
- Cisco Rv215w
- Cisco Rv215w_firmware — versions 1.0.3.55, 1.2.2.8, 1.3.1.7
Weakness classification (CWE)
References
- psirt@cisco.com (x_refsource_CISCO, vendor-advisory, Vendor Advisory)
Frequently asked questions
- What is CVE-2022-20923?
- CVE-2022-20923 is a medium-severity vulnerability in Cisco Small Business Rv Series Router Firmware, classified under Incorrect Implementation of Authentication Algorithm. CVSS score: 4.0/10. Published 2022-09-08.
- How severe is CVE-2022-20923?
- Medium severity. CVSS v3 base score is 4.0 out of 10.