Cisco Small Business RV Series Arbitrary Code Execution (cisco-sa-code-exec-wH3BNFb)

critical Nessus Plugin ID 139035


The remote device is missing a vendor-supplied security patch


According to its self-reported version, Cisco Small Business RV Series Router Firmware is affected by an arbitrary code execution vulnerability due to improper input validation. An unauthenticated remote attacker can exploit this, via maliciously crafted requests, to execute arbitrary code with root privilage. Please see the included Cisco BIDs and Cisco Security Advisory for more information.


Upgrade to the relevant fixed version referenced in Cisco bug IDs CSCvs50861, CSCvs50862

See Also

Plugin Details

Severity: Critical

ID: 139035

File Name: cisco-sa-code-exec-wH3BNFb.nasl

Version: 1.18

Type: remote

Family: CISCO

Published: 7/28/2020

Updated: 3/29/2021

Supported Sensors: Nessus

Risk Information


Risk Factor: Medium

Score: 5.9


Risk Factor: Critical

Base Score: 10

Temporal Score: 7.4

Vector: CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C

CVSS Score Source: CVE-2020-3331


Risk Factor: Critical

Base Score: 9.8

Temporal Score: 8.5

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

CPE: x-cpe:/o:cisco:small_business_rv_series_router_firmware

Required KB Items: Cisco/Small_Business_Router/Version, Cisco/Small_Business_Router/Model

Exploit Ease: No known exploits are available

Patch Publication Date: 6/15/2020

Vulnerability Publication Date: 6/15/2020

Reference Information

CVE: CVE-2020-3331

CISCO-SA: cisco-sa-code-exec-wH3BNFb

IAVA: 2020-A-0331

CISCO-BUG-ID: CSCvs50861, CSCvs50862