Cisco Small Business RV110W, RV130, RV130W, and RV215W Routers Management Interface Remote Command Execution and Denial of Service Vulnerabilities
Description
Multiple vulnerabilities in the web-based management interface of Cisco Small Business RV110W, RV130, RV130W, and RV215W Routers could allow an authenticated, remote attacker to execute arbitrary code or cause an affected device to restart unexpectedly. The vulnerabilities are due to improper validation of user-supplied input in the web-based management interface. An attacker could exploit these vulnerabilities by sending crafted HTTP requests to an affected device. A successful exploit could allow the attacker to execute arbitrary code as the root user on the underlying operating system or cause the device to reload, resulting in a denial of service (DoS) condition. To exploit these vulnerabilities, an attacker would need to have valid administrator credentials on the affected device. Cisco has not released software updates that address these vulnerabilities.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Authenticated remote attackers can execute arbitrary code or cause DoS on several Cisco Small Business routers via crafted HTTP requests due to improper input validation, with no fix available.
Vulnerability
The vulnerabilities (CVE-2021-1181) reside in the web-based management interface of Cisco Small Business RV110W, RV130, RV130W, and RV215W Routers. They stem from improper validation of user-supplied input. An authenticated attacker with administrator credentials can send crafted HTTP requests to trigger the flaw. The web-based management interface is accessible via LAN by default; remote management (WAN) must be enabled for external exploitation [1].
Exploitation
An attacker must have valid administrator credentials for the affected device. The attacker sends specially crafted HTTP requests to the web-based management interface. If remote management is enabled, the attack can be launched over the WAN; otherwise, the attacker must have LAN access. No user interaction beyond authentication is required [1].
Impact
Successful exploitation allows arbitrary code execution as the root user on the underlying operating system, or causes the device to reload, resulting in a denial of service (DoS) condition. This gives the attacker full control of the router or disrupts network connectivity for users [1].
Mitigation
Cisco has not released software updates that address these vulnerabilities. There are no workarounds. The devices are end-of-life, and Cisco recommends migrating to a supported product. The vulnerability is not listed in the KEV catalog [1].
AI Insight generated on May 26, 2026. Synthesized from this CVE's description and the cited reference URLs; citations are validated against the source bundle.
Affected products
2- Range: n/a
Patches
0No patches discovered yet.
Vulnerability mechanics
AI mechanics synthesis has not run for this CVE yet.
References
1- tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-rv-overflow-WUnUgv4Umitrevendor-advisoryx_refsource_CISCO
News mentions
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