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.
Stack-based buffer overflow in the web management interface of Cisco Small Business RV series routers allows authenticated admin RCE or DoS.
Vulnerability
The vulnerability resides in the web-based management interface of Cisco Small Business RV110W, RV130, RV130W, and RV215W routers (all firmware versions prior to the disclosure). It is a stack-based buffer overflow caused by improper validation of user-supplied input in HTTP requests. The interface is accessible over LAN or WAN if remote management is enabled (disabled by default) [1].
Exploitation
An attacker must have valid administrator credentials and be able to send crafted HTTP requests to the affected device's web interface. The attack does not require user interaction beyond the initial authentication. The crafted request triggers the buffer overflow when processed by the vulnerable handler [1].
Impact
Successful exploitation allows arbitrary code execution as root on the underlying operating system, or device reload, leading to a denial of service (DoS). This results in full compromise of the router [1].
Mitigation
Cisco has not released software updates to address this vulnerability as of the advisory date (2021-01-13). No workarounds are available. Disabling remote management reduces attack surface but does not eliminate local LAN exploitation. The devices are not listed as end-of-life [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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