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Vulnerability record · CVE-2020-3331 · published 16 July 2020

CVE-2020-3331: Cisco rv110w wireless-n vpn firewall firmware memory buffer overflow vulnerability

Cisco · Rv110w Wireless N Vpn Firewall Firmware

A vulnerability in the web-based management interface of Cisco RV110W Wireless-N VPN Firewall and Cisco RV215W Wireless-N VPN Router 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 data by the web-based management interface. An attacker could exploit this vulnerability by sending crafted requests to a targeted device. A successful exploit could allow the attacker to execute arbitrary code with the privileges of the root user.

9.8 CVSS 3.1 Critical EPSS 42% · top 1.4% CWE-119 · Memory buffer overflow
9.8CVSS 3.1 base score, v2 10.0
42%EPSS exploitation probability, 30 days
NoNot in CISA KEV
2Affected product versions listed by NVD
2References
17 Jun 2026Last modified by NVD

Description

A vulnerability in the web-based management interface of Cisco RV110W Wireless-N VPN Firewall and Cisco RV215W Wireless-N VPN Router 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 data by the web-based management interface. An attacker could exploit this vulnerability by sending crafted requests to a targeted device. A successful exploit could allow the attacker to execute arbitrary code with the privileges of the root user.

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

Affected products

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

References

LinkTags
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-code-exec-wH3BNFb Vendor Advisory
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-code-exec-wH3BNFb Vendor Advisory

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Related vulnerabilities

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

9.8CVE-2021-34730Cisco application extension platform stack-based buffer overflow vulnerabilityA vulnerability in the Universal Plug-and-Play (UPnP) service of Cisco Small Business RV110W, RV130, RV130W, and RV215W Routers could allow an unauth…EPSS 19%9.8CVE-2020-3323Cisco rv110w wireless-n vpn firewall firmware memory 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 5.7%9.8CVE-2020-3330Cisco rv110w wireless-n vpn firewall firmware hard-coded credentials vulnerabilityA vulnerability in the Telnet service of Cisco Small Business RV110W Wireless-N VPN Firewall Routers could allow an unauthenticated, remote attacker …EPSS 3.4%9.8CVE-2016-1395Cisco rv130w wireless-n multifunction vpn router firmware improper input validation vulnerabilityThe web-based management interface on Cisco RV110W devices with firmware before 1.2.1.7, RV130W devices with firmware before 1.0.3.16, and RV215W dev…EPSS 4.8%8.8CVE-2020-3332Cisco rv110w wireless-n vpn firewall firmware os command injection vulnerabilityA vulnerability in the web-based management interface of Cisco Small Business RV110W, RV130, RV130W, and RV215W Series Routers could allow an authent…EPSS 3.2%8.8CVE-2020-3146Cisco rv110w wireless-n vpn firewall 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 2.9%8.8CVE-2015-6397Cisco rv110w wireless-n vpn firewall firmware improper authentication vulnerabilityCisco RV110W, RV130W, and RV215W devices have an incorrect RBAC configuration for the default account, which allows remote authenticated users to obt…EPSS 2.3%7.8CVE-2015-6396Cisco rv110w wireless-n vpn firewall firmware os command injection vulnerabilityThe CLI command parser on Cisco RV110W, RV130W, and RV215W devices allows local users to execute arbitrary shell commands as an administrator via cra…EPSS 1.9%

Source: NIST National Vulnerability Database (record CVE-2020-3331), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.