CVE-2020-3331

highpriority · attend · 54EPSS 0.417 · 99 %ileEURUUS

grimoire priorityP1 · Urgent

Exploitable?

—

no known exploitation

Likely / severe?

41.7% (99th) EPSS

CVSS 10 · high

Is it mine?

7 products

Check your exposure

Who says so?

5 sources

cnnvd · enisa_euvd · fstec_bdu · cisco_csaf

EPSS · scored 2026-10-27

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.

remediations

Vendor fix, mitigation, or workaround guidance, as published by each source.

A vendor fix is available.

FixedCisco RV110W Wireless-N VPN Firewall Firmwarecisco_csaf
Cisco has released software updates that address this vulnerability.
https://software.cisco.com
FixedCisco RV215W Wireless-N VPN Router Firmware cisco_csaf
Cisco has released software updates that address this vulnerability.
https://software.cisco.com

cvss

Technical severity, 0–10. One row per scoring source.

10.0

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · high–critical · 9.8–10

v2.010highAV:N/AC:L/Au:N/C:C/I:C/A:Cprimary · NVD / NIST USexploitability 10 · impact 10

v3.19.8criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Hprimary · NVD / NIST USexploitability 3.9 · impact 5.9

v3.09.8criticalCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Hsecondary · ENISA EU

v3.09.8criticalCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Hsecondary · psirt@cisco.com USexploitability 3.9 · impact 5.9

v3.09.8criticalCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Hsecondary · Cisco PSIRT US

v3.19.8criticalAV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Hsecondary · FSTEC (BDU) RU

v3.19.8criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:Hsecondary · CVSS-BT (t0sche)

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Exploitation: none · Automatable: yes · Technical Impact: totalcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-119USprimaryCWE-119US

affected products (7)

Products and version ranges known to be affected.

Cisco Cisco RV110W Wireless-N VPN Firewall Firmwareall versionscisco_csafUS
Cisco Cisco RV215W Wireless-N VPN Router Firmware all versionscisco_csafUS
Cisco Cisco RV110W Wireless-N VPN Firewall Firmware≤ n/aenisa_euvdEU
Cisco Systems Inc. Cisco RV215W≤ 1.3.1.7fstec_bduRU
Cisco Systems Inc. RV110W Wireless-N VPN≤ 1.2.2.8fstec_bduRU
cisco rv110w wireless-n vpn firewall firmware< 1.2.2.8nvdUScpe:2.3:o:cisco:rv110w_wireless-n_vpn_firewall_firmware:*:*:*:*:*:*:*:*
cisco rv215w wireless-n vpn router firmware< 1.3.1.7nvdUScpe:2.3:o:cisco:rv215w_wireless-n_vpn_router_firmware:*:*:*:*:*:*:*:*

advisories (1)

Vendor and ecosystem advisories describing this.

cisco-sa-code-exec-wH3BNFbCisco RV110W and RV215W Series Routers Arbitrary Code Execution Vulnerability2020-07-15csaf · cisco_csafUS
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. Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability. This advisory is available at the following link: https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-code-exec-wH3BNFb ["https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-code-exec-wH3BNFb"]

also known as (4)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd fstec_bdu cisco_csaf nvd NVD CVE.org MITRE

published 2020-07-16modified 2026-06-17

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+21023 more

references (6)

External citations — patches, advisories, analysis.

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