Is CVE-2020-3453 in the CISA KEV catalog?

No. CVE-2020-3453 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2020-3453?

CVE-2020-3453 has a CVSS v3 base score of 4.7 (MEDIUM).

What is the EPSS score for CVE-2020-3453?

CVE-2020-3453 has an EPSS score of 3.08% (86th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2020-3453?

Upgrade rv340 firmware to 1.0.03.19 or later. Fixes are available for 4 affected products.

CVE & CISA-KEV Catalog

CVE-2020-3453

MEDIUMEPSS 86th pctl

4.7

CVSS v3

NVD

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.

CWE-119Buffer Overflow CWE-20Improper Input Validation

How to fix

Remediation Available

rv340 firmwareNVD

Affected:< 1.0.03.19Fixed in:1.0.03.19CVE-2020-3453derived from NVD

rv340w firmwareNVD

Affected:< 1.0.03.19Fixed in:1.0.03.19CVE-2020-3453derived from NVD

rv345 firmwareNVD

Affected:< 1.0.03.19Fixed in:1.0.03.19CVE-2020-3453derived from NVD

rv345p firmwareNVD

Affected:< 1.0.03.19Fixed in:1.0.03.19CVE-2020-3453derived from NVD

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredHigh

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityLow

IntegrityLow

AvailabilityLow

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

Exploit Intelligence

3.08%probability of exploitation in 30 days

86thpercentile

Elevated risk: more likely to be exploited than 86% of all known CVEs.

References

Vendor Advisory1

tools.cisco.com

Third-Party Advisory1

zerodayinitiative.com

Related Vulnerabilities

Other CWE-119 (Buffer Overflow) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2023-4966	Critical	9.4	100%	KEV + Ransom	Fix
CVE-2017-11882	High	7.8	100%	KEV + Ransom	-
CVE-2020-0796	Critical	10.0	100%	KEV + Ransom	-
CVE-2008-4250	Critical	9.8	99%	KEV	-
CVE-2017-15944	Critical	9.8	98%	KEV	Fix
CVE-2015-0014	High	10.0	97%	-	-

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2024-11-21.