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Vulnerability record · CVE-2021-1459 · published 8 April 2021

CVE-2021-1459: Cisco rv110w firmware memory buffer overflow vulnerability

Cisco · Rv110w Firmware

A vulnerability in the web-based management interface of Cisco Small Business RV110W, RV130, RV130W, and RV215W Routers could allow an unauthenticated, remote attacker to execute arbitrary code on an affected device. The vulnerability is due to improper validation of user-supplied input in the web-based management interface. An attacker could exploit this vulnerability by sending crafted HTTP requests to a targeted device. A successful exploit could allow the attacker to execute arbitrary code as the root user on the underlying operating system of the affected device. Cisco has not released software updates that address this vulnerability.

9.8 CVSS 3.1 Critical EPSS 3.0% · top 13.1% CWE-119 · Memory buffer overflowCWE-20 · Improper input validation
9.8CVSS 3.1 base score, v2 10.0
3.0%EPSS exploitation probability, 30 days
NoNot in CISA KEV
4Affected product versions listed by NVD
2References
17 Jun 2026Last modified by NVD

Description

A vulnerability in the web-based management interface of Cisco Small Business RV110W, RV130, RV130W, and RV215W Routers could allow an unauthenticated, remote attacker to execute arbitrary code on an affected device. The vulnerability is due to improper validation of user-supplied input in the web-based management interface. An attacker could exploit this vulnerability by sending crafted HTTP requests to a targeted device. A successful exploit could allow the attacker to execute arbitrary code as the root user on the underlying operating system of the affected device. Cisco has not released software updates that address this vulnerability.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

4 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-rv-rce-q3rxHnvm Vendor Advisory
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-rv-rce-q3rxHnvm Vendor Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

10.0CVE-2014-0683Cisco rv110w firmware vulnerabilityThe web management interface on the Cisco RV110W firewall with firmware 1.2.0.9 and earlier, RV215W router with firmware 1.1.0.5 and earlier, and CVR…EPSS 10%9.8CVE-2022-20923Cisco rv110w firmware improper authentication vulnerabilityA vulnerability in the IPSec VPN Server authentication functionality of Cisco Small Business RV110W, RV130, RV130W, and RV215W Routers could allow an…EPSS 1.0%9.8CVE-2022-20825Cisco rv110w firmware stack-based buffer overflow vulnerabilityA vulnerability in the web-based management interface of Cisco Small Business RV110W, RV130, RV130W, and RV215W Routers could allow an unauthenticate…EPSS 3.2%9.8CVE-2020-3144Cisco rv110w firmware improper access control vulnerabilityA vulnerability in the web-based management interface of the Cisco RV110W Wireless-N VPN Firewall, RV130 VPN Router, RV130W Wireless-N Multifunction …EPSS 2.9%9.8CVE-2019-1663Cisco RV110W/RV130W/RV215W web management interface buffer overflow RCEThe web-based management interface of the Cisco RV110W, RV130W and RV215W routers fails to properly validate user-supplied data, allowing an out-of-b…EPSS 96%analysed9.8CVE-2018-0425Cisco rv110w firmware information exposure vulnerabilityA vulnerability in the web-based management interface of the Cisco RV110W Wireless-N VPN Firewall, Cisco RV130W Wireless-N Multifunction VPN Router, …EPSS 3.4%9.8CVE-2018-0426Cisco rv110w firmware path traversal vulnerabilityA vulnerability in the web-based management interface of the Cisco RV110W Wireless-N VPN Firewall, Cisco RV130W Wireless-N Multifunction VPN Router, …EPSS 6.4%8.8CVE-2020-3145Cisco rv110w firmware memory buffer overflow vulnerabilityMultiple vulnerabilities in the web-based management interface of the Cisco RV110W Wireless-N VPN Firewall, RV130 VPN Router, RV130W Wireless-N Multi…EPSS 1.8%

Source: NIST National Vulnerability Database (record CVE-2021-1459), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.