Is CVE-2023-47267 in the CISA KEV catalog?

No. CVE-2023-47267 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2023-47267?

CVE-2023-47267 has a CVSS v3 base score of 9.8 (CRITICAL).

What is the EPSS score for CVE-2023-47267?

CVE-2023-47267 has an EPSS score of 0.75% (50th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2023-47267?

Upgrade thegreenbow vpn client to 6.52.006 or later.

CVE & CISA-KEV Catalog

CVE-2023-47267

CRITICAL

9.8

CVSS v3

NVD

Description

An issue discovered in TheGreenBow Windows Enterprise Certified VPN Client 6.52, Windows Standard VPN Client 6.87, and Windows Enterprise VPN Client 6.87 allows attackers to gain escalated privileges via crafted changes to memory mapped file.

CWE-269Improper Privilege Management

How to fix

Remediation Available

thegreenbow vpn clientNVD

Affected:>= 6.52.004, < 6.52.006Fixed in:6.52.006CVE-2023-47267derived from NVD

Affected:>= 6.87.001, < 6.87.108Fixed in:6.87.108CVE-2023-47267derived from NVD

Affected:>= 6.87.001, < 6.87.109Fixed in:6.87.109CVE-2023-47267derived 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

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

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

Exploit Intelligence

0.75%probability of exploitation in 30 days

50thpercentile

Moderate risk: more likely to be exploited than 50% of all known CVEs.

References

Vendor Advisory1

thegreenbow.com

Related Vulnerabilities

Other CWE-269 (Improper Privilege Management) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2017-12635	Critical	9.8	100%	-	Fix
CVE-2022-24637	Critical	9.8	99%	-	Fix
CVE-2017-5689	Critical	9.8	92%	KEV	Fix
CVE-2020-3243	Critical	9.8	88%	-	-
CVE-2024-21888	High	8.8	87%	-	-
CVE-2022-0441	Critical	9.8	85%	-	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 2025-12-17.