Is CVE-2020-3440 in the CISA KEV catalog?

No. CVE-2020-3440 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2020-3440?

CVE-2020-3440 has a CVSS v3 base score of 6.5 (MEDIUM).

What is the EPSS score for CVE-2020-3440?

CVE-2020-3440 has an EPSS score of 2.62% (84th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2020-3440?

Upgrade Cisco Webex Meetings to 40.8 or later. Fixes are available for 2 affected products.

CVE & CISA-KEV Catalog

CVE-2020-3440

MEDIUMEPSS 84th pctl

6.5

CVSS v3

NVD

Description

A vulnerability in Cisco Webex Meetings Desktop App for Windows could allow an unauthenticated, remote attacker to overwrite arbitrary files on an end-user system. The vulnerability is due to improper validation of URL parameters that are sent from a website to the affected application. An attacker could exploit this vulnerability by persuading a user to follow a URL to a website that is designed to submit crafted input to the affected application. A successful exploit could allow the attacker to overwrite arbitrary files on the affected system, possibly corrupting or deleting critical system files.

CWE-22Path Traversal

How to fix

Remediation Available

Cisco Webex MeetingsWindows application

Affected:40.8Fixed in:40.8Cisco Webex LLC

WebexWindows application

Affected:40.8Fixed in:40.8Cisco Systems, Inc

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 InteractionRequired

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityHigh

AvailabilityNone

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

Exploit Intelligence

2.62%probability of exploitation in 30 days

84thpercentile

Elevated risk: more likely to be exploited than 84% of all known CVEs.

References

Vendor Advisory1

tools.cisco.com

Related Vulnerabilities

Other CWE-22 (Path Traversal) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2024-23897	Critical	9.8	100%	KEV + Ransom	Fix
CVE-2023-32315	High	8.6	100%	KEV	Fix
CVE-2022-29464	Critical	9.8	100%	KEV + Ransom	-
CVE-2021-26086	Medium	5.3	100%	KEV	Fix
CVE-2021-22005	Critical	9.8	100%	KEV + Ransom	Fix
CVE-2020-5902	Critical	9.8	100%	KEV + Ransom	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.