VYPR
Unrated severityNVD Advisory· Published Jan 13, 2021· Updated Nov 12, 2024

Cisco Small Business RV110W, RV130, RV130W, and RV215W Routers Management Interface Stored Cross-Site Scripting Vulnerabilities

CVE-2021-1156

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 conduct cross-site scripting (XSS) attacks against a user of the interface. The vulnerabilities are due to insufficient input validation by 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 script code in the context of the affected interface or access sensitive, browser-based information. To exploit these vulnerabilities, an attacker would need to have valid administrator credentials on the affected device.

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Cisco Small Business RV series routers are vulnerable to stored XSS in the web-based management interface, allowing authenticated attackers to execute arbitrary script code.

Vulnerability

The web-based management interface of Cisco Small Business RV110W, RV130, RV130W, and RV215W routers contains multiple stored cross-site scripting (XSS) vulnerabilities due to insufficient input validation [1]. An authenticated remote attacker can inject arbitrary script code via crafted HTTP requests. Affected firmware versions are those running on these devices prior to the fixed releases. The interface is accessible via LAN or WAN if remote management is enabled (disabled by default) [1].

Exploitation

An attacker must have valid administrator credentials to access the web-based management interface [1]. The attacker sends specially crafted HTTP requests containing malicious script code to the device. The script is then stored and executed when an administrator views the affected page, leading to XSS [1].

Impact

Successful exploitation allows the attacker to execute arbitrary script code in the context of the affected interface, potentially accessing sensitive browser-based information such as session tokens or cookies [1]. The attacker gains the ability to perform actions as the victim administrator within the web interface.

Mitigation

Cisco has released firmware updates to address these vulnerabilities. The fixed versions are available for download from the Cisco Software Center. There are no workarounds [1]. Users should upgrade to the latest firmware for their device model. The devices are not listed on the CISA KEV as of this writing.

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

4

Patches

0

No patches discovered yet.

Vulnerability mechanics

AI mechanics synthesis has not run for this CVE yet.

References

1

News mentions

0

No linked articles in our index yet.