Is CVE-2020-3358 in the CISA KEV catalog?

No. CVE-2020-3358 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2020-3358?

CVE-2020-3358 has a CVSS v3 base score of 8.6 (HIGH).

What is the EPSS score for CVE-2020-3358?

CVE-2020-3358 has an EPSS score of 1.35% (68th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2020-3358?

Upgrade rv340 dual wan gigabit vpn router firmware to 1.0.03.18 or later. Fixes are available for 4 affected products.

CVE & CISA-KEV Catalog

CVE-2020-3358

HIGH

8.6

CVSS v3

NVD

Description

A vulnerability in the Secure Sockets Layer (SSL) VPN feature for Cisco Small Business RV VPN Routers could allow an unauthenticated, remote attacker to cause the device to unexpectedly restart, causing a denial of service (DoS) condition. The vulnerability is due to a lack of proper input validation of HTTP requests. An attacker could exploit this vulnerability by sending a crafted HTTP request over an SSL connection to the targeted device. A successful exploit could allow the attacker to cause a reload, resulting in a DoS condition.

CWE-20Improper Input Validation

How to fix

Remediation Available

rv340 dual wan gigabit vpn router firmwareNVD

Affected:< 1.0.03.18Fixed in:1.0.03.18CVE-2020-3358derived from NVD

rv340w dual wan gigabit wireless-ac vpn router firmwareNVD

Affected:< 1.0.03.18Fixed in:1.0.03.18CVE-2020-3358derived from NVD

rv345 dual wan gigabit vpn router firmwareNVD

Affected:< 1.0.03.18Fixed in:1.0.03.18CVE-2020-3358derived from NVD

rv345p dual wan gigabit poe vpn router firmwareNVD

Affected:< 1.0.03.18Fixed in:1.0.03.18CVE-2020-3358derived 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 RequiredNone

User InteractionNone

ScopeChanged

Impact

ConfidentialityNone

IntegrityNone

AvailabilityHigh

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

Exploit Intelligence

1.35%probability of exploitation in 30 days

68thpercentile

Moderate risk: more likely to be exploited than 68% of all known CVEs.

References

Vendor Advisory1

tools.cisco.com

Related Vulnerabilities

Other CWE-20 (Improper Input Validation) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2024-3400	Critical	10.0	100%	KEV + Ransom	-
CVE-2021-45105	Medium	5.9	100%	-	Fix
CVE-2021-44228	Critical	10.0	100%	KEV + Ransom	Fix
CVE-2021-21985	Critical	9.8	100%	KEV + Ransom	Fix
CVE-2018-7600	Critical	9.8	100%	KEV + Ransom	Fix
CVE-2020-3452	High	7.5	100%	KEV	Fix

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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.