CVE-2022-20699criticalunder attackCWE-121

CVE-2022-20699: critical vulnerability in Cisco Small Business RV Series Router Firmware

Cisco Small Business RV Series Routers Vulnerabilities

Published · Updated

100Vexday Risk Score

Patch now. It under exploitation confirmed by CISA and has a working public exploit.

ssvc Actcvss 10epss 72%
from disclosure to weapon0 days
Published on NVDFeb 10
1st PoCJan 1
metasploitFeb 2
CISA KEV+21d
exploitation probability
72%top 1% of all CVEs
observed exploitation
yesCISA + VulnCheck
8 public exploit(s)
Action required by CISAfederal deadline: 2022-03-17

Apply updates per vendor instructions.

In short

Cisco Small Business routers (RV160, RV260, RV340, RV345) have critical flaws that let attackers take complete control by running malicious code, bypassing security checks, or crashing the device. These are serious vulnerabilities affecting network equipment used by many businesses.

Technical detail

Multiple stack-based buffer overflows and authentication bypass vulnerabilities in Cisco RV Series routers allow unauthenticated or low-privilege attackers to execute arbitrary code with root privileges, load unsigned firmware, and disable services. Attack vectors include web interface requests and command injection; affected models lack proper input validation and code signing verification.

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
public PoCs found — 8
githubgithub.com/Audiobahn/CVE-2022-20699★ 237githubgithub.com/puckiestyle/CVE-2022-20699★ 0vulncheckvulncheck.com/xdb/768c813deaadunverifiedvulncheckvulncheck.com/xdb/7acf52ba8e46unverifiedvulncheckvulncheck.com/xdb/dc5a39831d19unverifiedcve_referencepacketstormsecurity.com/files/167113/Cisco-RV340-SSL-VPN-Unauthenticated-Remote-Code-Execution.htmlunverifiedvulncheckvulncheck.com/xdb/49d7d69da4feunverifiedvulncheckvulncheck.com/xdb/8bf31770e81aunverified
⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.
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-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%KEVCVE-2022-20703CRITICALCisco Small Business RV Series Routers VulnerabilitiesEPSS 9.2%KEV
References
http://packetstormsecurity.com/files/167113/Cisco-RV340-SSL-VPN-Unauthenticated-Remote-Code-Execution.htmlhttps://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-smb-mult-vuln-KA9PK6Dhttps://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2022-20699https://www.zerodayinitiative.com/advisories/ZDI-22-414/