CVE-2022-20703criticalunder attackCWE-121

CVE-2022-20703: 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

E-mail alert when it lands in KEV, gets a public PoC or its score goes up.

58Vexday Risk Score

Prioritize patching. It under exploitation confirmed by CISA.

ssvc Actcvss 10epss 9.2%
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 execute malicious code, bypass security controls, and take complete control of the device. This poses an immediate and severe threat to any network using these routers.

Technical detail

Stack-based buffer overflow and improper input validation in Cisco RV160, RV260, RV340, and RV345 routers enable remote or local attackers to execute arbitrary code with elevated privileges, bypass authentication, and load unsigned firmware. The vulnerabilities require minimal or no authentication in some cases, resulting in complete device compromise and potential network-wide impact.

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.

CVE-2019-1653HIGHCisco Small Business RV320 and RV325 Routers Information Disclosure VulnerabilityEPSS 99.9%KEVCVE-2019-1652HIGHCisco Small Business RV320 and RV325 Routers Command Injection VulnerabilityEPSS 95.9%KEVCVE-2022-20699CRITICALCisco Small Business RV Series Routers VulnerabilitiesEPSS 72.5%KEVCVE-2023-20118MEDIUMCVE-2023-20118EPSS 54.1%KEVCVE-2022-20708CRITICALCisco Small Business RV Series Routers VulnerabilitiesEPSS 14.9%KEVCVE-2022-20701CRITICALCisco Small Business RV Series Routers VulnerabilitiesEPSS 9.7%KEV