CVE-2020-3453

Name: CVE-2020-3453
Creator: NVD / NIST
Published: 2020-09-04T03:15:10.2+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6.8/10EPSS 3.08%

Last modified Jun 17, 2026

CVE-2020-3453 is a medium-severity vulnerability rated 6.8/10 on the CVSS scale. Multiple vulnerabilities in the web-based management interface of Cisco Small Business RV340 Series Routers could allow an authenticated, remote attacker with administrative credentials to execute arbitrary commands on the underlying operating system (OS) as a restricted user. For more information about these vulnerabilities, see the Details section of this advisory.. EPSS estimates a 3.08% chance of exploitation in the next 30 days.

Description

Multiple vulnerabilities in the web-based management interface of Cisco Small Business RV340 Series Routers could allow an authenticated, remote attacker with administrative credentials to execute arbitrary commands on the underlying operating system (OS) as a restricted user. For more information about these vulnerabilities, see the Details section of this advisory.

Metrics

CVSS 3.1

6.8/10

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

EPSS Probability

3.08%

86.0th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Cisco	Rv340w Firmware	< 1.0.03.19
Cisco	Rv340 Firmware	< 1.0.03.19
Cisco	Rv345 Firmware	< 1.0.03.19
Cisco	Rv345p Firmware	< 1.0.03.19

References

https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-rv-osinj-rce-pwTkPCJvVendor Advisory
https://www.zerodayinitiative.com/advisories/ZDI-20-1101/Third Party Advisory, VDB Entry
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-rv-osinj-rce-pwTkPCJvVendor Advisory
https://www.zerodayinitiative.com/advisories/ZDI-20-1101/Third Party Advisory, VDB Entry

Timeline

Published: Sep 4, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-3453?

How severe is CVE-2020-3453?

CVE-2020-3453 has a CVSS score of 6.8/10 (MEDIUM severity). The EPSS model estimates a 3.08% probability of exploitation in the next 30 days.

How do I fix CVE-2020-3453?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2020-3453?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST