Is CVE-2023-40589 in the CISA KEV catalog?

No. CVE-2023-40589 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2023-40589?

CVE-2023-40589 has a CVSS v3 base score of 4.3 (MEDIUM).

What is the EPSS score for CVE-2023-40589?

CVE-2023-40589 has an EPSS score of 1.20% (64th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2023-40589?

Upgrade freerdp2 on debian 11 to 2.3.0+dfsg1-2+deb11u2 or later. Fixes are available for 23 affected products.

CVE & CISA-KEV Catalog

CVE-2023-40589

MEDIUM

4.3

CVSS v3

NVD

Description

FreeRDP is a free implementation of the Remote Desktop Protocol (RDP), released under the Apache license. In affected versions there is a Global-Buffer-Overflow in the ncrush_decompress function. Feeding crafted input into this function can trigger the overflow which has only been shown to cause a crash. This issue has been addressed in versions 2.11.0 and 3.0.0-beta3. Users are advised to upgrade. There are no known workarounds for this issue.

CWE-120Classic Buffer Overflow

How to fix

Remediation Available

freerdp2Debian

Fixed in:2.3.0+dfsg1-2+deb11u2CVE-2023-40589

Fixed in:2.11.7+dfsg1-6~deb12u1CVE-2023-40589

freerdpRed Hat / RHEL

Fixed in:2:2.11.2-1.el9RHSA-2024:2208

freerdpRocky

Fixed in:2:2.11.2-1.el9RHSA-2024:2208

freerdp-debuginfoRed Hat / RHEL

Fixed in:2:2.11.2-1.el9RHSA-2024:2208

freerdp-debuginfoRocky

Fixed in:2:2.11.2-1.el9RHSA-2024:2208

freerdp-debugsourceRed Hat / RHEL

Fixed in:2:2.11.2-1.el9RHSA-2024:2208

freerdp-debugsourceRocky

Fixed in:2:2.11.2-1.el9RHSA-2024:2208

freerdp-develRed Hat / RHEL

Fixed in:2:2.11.2-1.el9RHSA-2024:2208

freerdp-develRocky

Fixed in:2:2.11.2-1.el9RHSA-2024:2208

freerdp-libsRocky

Fixed in:2:2.11.2-1.el9RHSA-2024:2208

freerdp-libsRed Hat / RHEL

Fixed in:2:2.11.2-1.el9RHSA-2024:2208

freerdp-libs-debuginfoRed Hat / RHEL

Fixed in:2:2.11.2-1.el9RHSA-2024:2208

freerdp-libs-debuginfoRocky

Fixed in:2:2.11.2-1.el9RHSA-2024:2208

libwinprRocky

Fixed in:2:2.11.2-1.el9RHSA-2024:2208

libwinprRed Hat / RHEL

Fixed in:2:2.11.2-1.el9RHSA-2024:2208

libwinpr-debuginfoRed Hat / RHEL

Fixed in:2:2.11.2-1.el9RHSA-2024:2208

libwinpr-debuginfoRocky

Fixed in:2:2.11.2-1.el9RHSA-2024:2208

libwinpr-develRed Hat / RHEL

Fixed in:2:2.11.2-1.el9RHSA-2024:2208

libwinpr-develRocky

Fixed in:2:2.11.2-1.el9RHSA-2024:2208

freerdp2Ubuntu

Fixed in:2.2.0+dfsg1-0ubuntu0.18.04.4+esm1USN-6401-1

Fixed in:2.2.0+dfsg1-0ubuntu0.20.04.5USN-6401-1

Fixed in:2.6.1+dfsg1-3ubuntu2.4USN-6401-1

Fixed in:2.10.0+dfsg1-1ubuntu0.2USN-6401-1

libfreerdp2-2Ubuntu

Fixed in:2.2.0+dfsg1-0ubuntu0.18.04.4+esm1USN-6401-1

Fixed in:2.2.0+dfsg1-0ubuntu0.20.04.5USN-6401-1

Fixed in:2.6.1+dfsg1-3ubuntu2.4USN-6401-1

Fixed in:2.10.0+dfsg1-1ubuntu0.2USN-6401-1

libwinpr2-2Ubuntu

Fixed in:2.2.0+dfsg1-0ubuntu0.18.04.4+esm1USN-6401-1

Fixed in:2.2.0+dfsg1-0ubuntu0.20.04.5USN-6401-1

Fixed in:2.6.1+dfsg1-3ubuntu2.4USN-6401-1

libwinpr2-devUbuntu

Fixed in:2.2.0+dfsg1-0ubuntu0.18.04.4+esm1USN-6401-1

Fixed in:2.2.0+dfsg1-0ubuntu0.20.04.5USN-6401-1

Fixed in:2.6.1+dfsg1-3ubuntu2.4USN-6401-1

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

IntegrityNone

AvailabilityLow

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

Exploit Intelligence

1.20%probability of exploitation in 30 days

64thpercentile

Moderate risk: more likely to be exploited than 64% of all known CVEs.

References

Patch1

github.com

Exploit1

github.com

Third-Party Advisory4

Other references2

Related Vulnerabilities

Other CWE-120 (Classic Buffer Overflow) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2014-0195	Medium	6.8	100%	-	Fix
CVE-2017-7269	Critical	9.8	100%	KEV	-
CVE-2019-11043	High	8.7	99%	KEV + Ransom	Fix
CVE-2011-4862	High	10.0	95%	-	Fix
CVE-2007-5659	High	7.8	94%	KEV	Fix
CVE-2022-3786	High	7.5	91%	-	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 2025-11-03.