7.2
HIGH
CVE-2021-1187
Cisco Small Business RV Router Web Interface HTTP Input Validation Vulnerability
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.

INFO

Published Date :

Jan. 13, 2021, 10:15 p.m.

Last Modified :

Nov. 7, 2023, 3:27 a.m.

Remotely Exploitable :

Yes !

Impact Score :

5.9

Exploitability Score :

1.2
Affected Products

The following products are affected by CVE-2021-1187 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Cisco rv110w_firmware
2 Cisco rv130w_firmware
3 Cisco application_extension_platform
4 Cisco small_business_rv_series_router_firmware
5 Cisco rv215w_wireless-n_vpn_router_firmware
6 Cisco rv130_vpn_router_firmware
References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2021-1187.

URL Resource
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-rv-overflow-WUnUgv4U Vendor Advisory

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2021-1187 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2021-1187 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • CVE Modified by [email protected]

    May. 14, 2024

    Action Type Old Value New Value
  • CVE Modified by [email protected]

    Nov. 07, 2023

    Action Type Old Value New Value
    Removed CVSS V3 Cisco Systems, Inc. AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
    Added CVSS V3.1 Cisco Systems, Inc. AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
  • Initial Analysis by [email protected]

    Jan. 15, 2021

    Action Type Old Value New Value
    Added CVSS V2 NIST (AV:N/AC:L/Au:S/C:C/I:C/A:C)
    Added CVSS V3.1 NIST AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
    Changed Reference Type https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-rv-overflow-WUnUgv4U No Types Assigned https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-rv-overflow-WUnUgv4U Vendor Advisory
    Added CWE NIST CWE-787
    Added CPE Configuration AND OR *cpe:2.3:o:cisco:rv110w_firmware:1.2.2.8:*:*:*:*:*:*:* *cpe:2.3:o:cisco:rv110w_firmware:1.3.1.7:*:*:*:*:*:*:* OR cpe:2.3:h:cisco:rv110w:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:cisco:rv130_vpn_router_firmware:1.2.2.8:*:*:*:*:*:*:* *cpe:2.3:o:cisco:rv130_vpn_router_firmware:1.3.1.7:*:*:*:*:*:*:* OR cpe:2.3:h:cisco:rv130_vpn_router:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:cisco:rv130w_firmware:1.2.2.8:*:*:*:*:*:*:* *cpe:2.3:o:cisco:rv130w_firmware:1.3.1.7:*:*:*:*:*:*:* OR cpe:2.3:h:cisco:rv130w:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:cisco:rv215w_wireless-n_vpn_router_firmware:1.2.2.8:*:*:*:*:*:*:* *cpe:2.3:o:cisco:rv215w_wireless-n_vpn_router_firmware:1.3.1.7:*:*:*:*:*:*:* OR cpe:2.3:h:cisco:rv215w_wireless-n_vpn_router:-:*:*:*:*:*:*:*
    Added CPE Configuration OR *cpe:2.3:a:cisco:application_extension_platform:1.0.3.55:*:*:*:*:*:*:*
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2021-1187 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2021-1187 weaknesses.

Exploit Prediction

EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.

0.30 }} 0.09%

score

0.69938

percentile

CVSS31 - Vulnerability Scoring System
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability