CVE-2022-20700criticalunder attackCWE-121

CVE-2022-20700: critical vulnerability in Cisco Small Business RV Series Router Firmware

Cisco Small Business RV Series Routers Vulnerabilities

Published · Updated

Follow this CVE+ Monitor Cisco Small Business RV Series Router+ Monitor Small Business RV160, RV260, RV340, and RV345 Series Routers

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58Vexday Risk Score

Prioritize patching. It under exploitation confirmed by CISA.

ssvc Actcvss 10epss 5.7%
from disclosure to weapon
Published on NVDFeb 10
CISA KEV+21d
Action required by CISAfederal deadline: 2022-03-17

Apply updates per vendor instructions.

In short

Multiple critical flaws in Cisco Small Business RV routers allow attackers to take complete control of the device by executing unauthorized code, bypassing login protections, or crashing the system. These vulnerabilities affect models RV160, RV260, RV340, and RV345.

Technical detail

Stack-based buffer overflows and authentication bypass vulnerabilities in Cisco RV Series routers enable arbitrary code execution with elevated privileges, unsigned firmware installation, and command injection. Attack vectors include network-accessible interfaces; compromised devices can be weaponized as network pivots or completely disabled via DoS.

Summary generated and translated by AI from the official description.

The full analysis of this CVE is available in Portuguese →

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.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Affected products
Cisco · Cisco Small Business RV Series Router Firmware
Related CVEs — Cisco Small Business RV Series Router Firmware

In the same product, most dangerous first.

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