How severe is CVE-2020-3453?

CVE-2020-3453 has a CVSS 3.x base score of 4.7, rated medium severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability low.

Is CVE-2020-3453 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (86th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-3453?

CVE-2020-3453 primarily affects Cisco Rv340w Firmware. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2020-3453?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2020-3453 published?

CVE-2020-3453 was published on 2020-09-04 and last updated on 2026-06-17.

CVE-2020-3453

CVE-2020-3453 is a medium-severity vulnerability in Cisco Rv340w Firmware with a CVSS 3.x base score of 4.7. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-20.

Key facts

Severity: Medium (CVSS 3.x base score 4.7)
CVSS v2: 7.7
EPSS exploit prediction: 3% (86th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-20
Affected product: Cisco Rv340w Firmware
Published: 2020-09-04
Last modified: 2026-06-17

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.

Frequently asked questions

What is CVE-2020-3453?: 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.
How severe is CVE-2020-3453?: CVE-2020-3453 has a CVSS 3.x base score of 4.7, rated medium severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability low.
Is CVE-2020-3453 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (86th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-3453?: CVE-2020-3453 primarily affects Cisco Rv340w Firmware. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2020-3453?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2020-3453 published?: CVE-2020-3453 was published on 2020-09-04 and last updated on 2026-06-17.

References

Affected products (4)

cpe:2.3:o:cisco:rv340w_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:cisco:rv340_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:cisco:rv345_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:cisco:rv345p_firmware:*:*:*:*:*:*:*:*

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