{"id":"CVE-2021-1472","published":"2021-04-08T04:06:54Z","modified":"2024-11-08T17:50:36Z","title":"Cisco Small Business RV Series Routers Vulnerabilities","vendor":"Cisco","product":"Cisco Small Business RV Series Router Firmware","tier":"core","eol":null,"description":{"text":"Multiple vulnerabilities exist in the web-based management interface of Cisco Small Business RV Series Routers. A remote attacker could execute arbitrary commands or bypass authentication and upload files on an affected device. For more information about these vulnerabilities, see the Details section of this advisory.","provenance":"source","from":"CVE.org"},"summary":{"text":"Multiple flaws exist in the web-based management interface of Cisco Small Business RV Series Router Firmware, which is classified as improper restriction of operations within the bounds of a memory buffer. A remote attacker with network access can exploit these issues without authentication or user interaction to execute arbitrary commands, bypass authentication, or upload files to an affected device.","provenance":"ai","model":"claude-haiku-5-5","generatedAt":"2026-10-29T07:13:03Z"},"cvss":{"score":5.3,"severity":"MEDIUM","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N","provenance":"source","from":"CVE.org CNA"},"epss":{"score":0.72028,"percentile":0.99428,"date":"2026-10-29","provenance":"source"},"kev":null,"vulncheckKev":{"dateAdded":"2021-10-07","exploitedFirstSeen":"2021-10-07","ransomware":false,"evidence":[{"url":"https://vblocalhost.com/uploads/VB2021-50.pdf","date":"2021-10-07"},{"url":"https://media.defense.gov/2024/Sep/18/2003547016/-1/-1/0/CSA-PRC-LINKED-ACTORS-BOTNET.PDF","date":"2024-09-18"},{"url":"https://previdian.com/CVE-2021-1472","date":"2026-07-30"}],"evidenceTotal":3,"provenance":"source"},"exploited":true,"otx":{"pulseCount":8,"pulses":[{"name":"Update 10: Cybercriminals Leverage 66 Vulnerabilities to Target Global Systems","url":"https://otx.alienvault.com/pulse/68651d685fb2301208e89b10","created":"2025-07-02"},{"name":"NCSC Advisory - 18th Sept 2024 - PRC Botnet","url":"https://otx.alienvault.com/pulse/678638141cbf938dbca1090d","created":"2025-01-14"},{"name":"People's Republic of China-Linked Actors Compromise Routers and IoT Devices for Botnet Operations","url":"https://otx.alienvault.com/pulse/677cd56c6fd3f2632e1b4411","created":"2025-01-07"},{"name":"People's Republic of China-Linked Actors Compromise Routers and IoT Devices for Botnet Operations","url":"https://otx.alienvault.com/pulse/677cd54761ae1299ecfe27aa","created":"2025-01-07"},{"name":"People's Republic of China-Linked Actors Compromise Routers and IoT Devices for Botnet Operations","url":"https://otx.alienvault.com/pulse/66fd391fe0318d98f8af0eb4","created":"2024-10-02"},{"name":"CSA-PRC-LINKED-ACTORS-BOTNET","url":"https://otx.alienvault.com/pulse/66ebe08841abbc50444fbcae","created":"2024-09-19"},{"name":"Malware Gh0stTimes Used by BlackTech","url":"https://otx.alienvault.com/pulse/615c2a13c152c6c325889282","created":"2021-10-05"},{"name":"Gh0stTimes used by attack group BlackTech","url":"https://otx.alienvault.com/pulse/6152f9ebebe2df07f211e3a7","created":"2021-09-28"}],"provenance":"machine"},"cwes":[{"id":"CWE-119","name":"Improper Restriction of Operations within the Bounds of a Memory Buffer"}],"references":[{"url":"https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-sb-rv-bypass-inject-Rbhgvfdx","tags":["vendor-advisory","x_refsource_CISCO"]},{"url":"http://seclists.org/fulldisclosure/2021/Apr/39","tags":["mailing-list","x_refsource_FULLDISC"]},{"url":"http://packetstormsecurity.com/files/162238/Cisco-RV-Authentication-Bypass-Code-Execution.html","tags":["x_refsource_MISC"]}],"techniques":[],"reports":[],"affected":[],"advisories":[],"euvd":{"id":"EUVD-2021-6939","url":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2021-6939","exploited":false,"exploitedSince":null,"provenance":"source"},"exploits":[],"exploitSources":{"metasploit":[{"name":"Cisco Small Business RV Series Authentication Bypass and Command Injection","module":"exploit/linux/http/cisco_rv_series_authbypass_and_rce","type":"exploit","disclosureDate":"2021-04-07","url":"https://github.com/rapid7/metasploit-framework/blob/master/modules/exploits/linux/http/cisco_rv_series_authbypass_and_rce.rb"}],"nuclei":[{"id":"CVE-2021-1472","name":"Cisco Small Business RV Series - OS Command Injection","severity":"critical","path":"http/cves/2021/CVE-2021-1472.yaml","url":"https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2021/CVE-2021-1472.yaml"}],"first":{"date":"2021-04-07","source":"Metasploit","url":"https://github.com/rapid7/metasploit-framework/blob/master/modules/exploits/linux/http/cisco_rv_series_authbypass_and_rce.rb"},"provenance":"source"},"exploitRefs":["http://packetstormsecurity.com/files/162238/Cisco-RV-Authentication-Bypass-Code-Execution.html"],"flow":[],"timeline":[{"date":"2021-04-07","kind":"exploit-public","label":"First public exploit: Metasploit","url":"https://github.com/rapid7/metasploit-framework/blob/master/modules/exploits/linux/http/cisco_rv_series_authbypass_and_rce.rb","provenance":"source"},{"date":"2021-04-08","kind":"published","label":"Published (CVE.org)","url":"https://www.cve.org/CVERecord?id=CVE-2021-1472","provenance":"source"},{"date":"2021-10-07","kind":"exploited-reported","label":"Exploitation first reported (VulnCheck KEV evidence)","url":"https://vblocalhost.com/uploads/VB2021-50.pdf","provenance":"source"}],"speed":{"daysToPublicExploit":null,"firstExploitFrom":"Metasploit","daysToKev":null},"priority":{"score":65.8,"factors":[{"name":"In a KEV catalog","points":35.0,"detail":"listed in VulnCheck KEV"},{"name":"Recent KEV listing","points":0.0,"detail":"added 1848 days ago"},{"name":"Known ransomware use","points":0.0,"detail":"not known"},{"name":"EPSS percentile","points":19.89,"detail":"percentile 0.9943"},{"name":"Named in threat reports","points":0.0,"detail":"0 reports"},{"name":"Public exploit code","points":5.0,"detail":"1 NVD exploit link; 1 Metasploit module; 1 nuclei template"},{"name":"Mentioned in OTX pulses","points":2.17,"detail":"8 pulses"},{"name":"CVSS severity","points":3.71,"detail":"base score 5.3"},{"name":"End-of-life product","points":0.0,"detail":"supported or unknown"}]}}