Is CVE-2023-47256 in the CISA KEV catalog?

No. CVE-2023-47256 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2023-47256?

CVE-2023-47256 has a CVSS v3 base score of 5.5 (MEDIUM).

What is the EPSS score for CVE-2023-47256?

CVE-2023-47256 has an EPSS score of 0.45% (36th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2023-47256?

Upgrade screenconnect to 23.8.5 or later.

CVE & CISA-KEV Catalog

CVE-2023-47256

MEDIUM

5.5

CVSS v3

NVD

Description

ConnectWise ScreenConnect through 23.8.4 allows local users to connect to arbitrary relay servers via implicit trust of proxy settings

CWE-287Improper Authentication

How to fix

Remediation Available

screenconnectNVD

Affected:< 23.8.5Fixed in:23.8.5CVE-2023-47256derived 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 VectorLocal

Attack ComplexityLow

Privileges RequiredLow

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityHigh

AvailabilityNone

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

Exploit Intelligence

0.45%probability of exploitation in 30 days

36thpercentile

Low risk: more likely to be exploited than 36% of all known CVEs.

References

Vendor Advisory1

connectwise.com

Other references1

web.archive.org

Related Vulnerabilities

Other CWE-287 (Improper Authentication) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2023-35082	Critical	9.8	100%	KEV + Ransom	Fix
CVE-2023-35078	Critical	9.8	100%	KEV + Ransom	Fix
CVE-2017-7921	Critical	9.8	100%	KEV	-
CVE-2024-7593	Critical	9.8	100%	KEV	-
CVE-2023-46805	High	8.2	100%	KEV + Ransom	-
CVE-2022-40684	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 2025-06-17.