Is CVE-2026-44420 in the CISA KEV catalog?

No. CVE-2026-44420 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2026-44420?

CVE-2026-44420 has a CVSS v3 base score of 8.8 (HIGH).

What is the EPSS score for CVE-2026-44420?

CVE-2026-44420 has an EPSS score of 3.45% (88th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2026-44420?

Upgrade freerdp on rhel 10 to 2:3.10.3-12.el10_2.6 or later. Fixes are available for 25 affected products.

CVE & CISA-KEV Catalog

CVE-2026-44420

HIGHEPSS 88th pctl

8.8

CVSS v3

NVD

Description

FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.26.0, a malicious RDP client can trigger a heap-buffer-overflow write in FreeRDP's server-side clipboard (cliprdr) channel by sending a CB_CLIP_CAPS PDU with a too-small capabilitySetLength. This can crash the server process (remote DoS) and may be exploitable for code execution because it corrupts heap memory. This vulnerability is fixed in 3.26.0.

CWE-122Heap-based Buffer Overflow CWE-131

How to fix

Remediation Available

freerdpRed Hat / RHEL

Fixed in:2:3.10.3-12.el10_2.6RHSA-2026:36203

freerdpRocky

Fixed in:2:3.10.3-12.el10_2.6RHSA-2026:36203

freerdp-debuginfoRocky

Fixed in:2:3.10.3-12.el10_2.6RHSA-2026:36203

freerdp-debuginfoRed Hat / RHEL

Fixed in:2:3.10.3-12.el10_2.6RHSA-2026:36203

freerdp-debugsourceRed Hat / RHEL

Fixed in:2:3.10.3-12.el10_2.6RHSA-2026:36203

freerdp-debugsourceRocky

Fixed in:2:3.10.3-12.el10_2.6RHSA-2026:36203

freerdp-develRed Hat / RHEL

Fixed in:2:3.10.3-12.el10_2.6RHSA-2026:36203

freerdp-develRocky

Fixed in:2:3.10.3-12.el10_2.6RHSA-2026:36203

freerdp-libsRed Hat / RHEL

Fixed in:2:3.10.3-12.el10_2.6RHSA-2026:36203

freerdp-libsRocky

Fixed in:2:3.10.3-12.el10_2.6RHSA-2026:36203

freerdp-libs-debuginfoRocky

Fixed in:2:3.10.3-12.el10_2.6RHSA-2026:36203

freerdp-libs-debuginfoRed Hat / RHEL

Fixed in:2:3.10.3-12.el10_2.6RHSA-2026:36203

freerdp-serverRed Hat / RHEL

Fixed in:2:3.10.3-12.el10_2.6RHSA-2026:36203

freerdp-serverRocky

Fixed in:2:3.10.3-12.el10_2.6RHSA-2026:36203

freerdp-server-debuginfoRocky

Fixed in:2:3.10.3-12.el10_2.6RHSA-2026:36203

freerdp-server-debuginfoRed Hat / RHEL

Fixed in:2:3.10.3-12.el10_2.6RHSA-2026:36203

libwinprRed Hat / RHEL

Fixed in:2:3.10.3-12.el10_2.6RHSA-2026:36203

libwinprRocky

Fixed in:2:3.10.3-12.el10_2.6RHSA-2026:36203

libwinpr-debuginfoRed Hat / RHEL

Fixed in:2:3.10.3-12.el10_2.6RHSA-2026:36203

libwinpr-debuginfoRocky

Fixed in:2:3.10.3-12.el10_2.6RHSA-2026:36203

libwinpr-develRed Hat / RHEL

Fixed in:2:3.10.3-12.el10_2.6RHSA-2026:36203

libwinpr-develRocky

Fixed in:2:3.10.3-12.el10_2.6RHSA-2026:36203

freerdp3Ubuntu

Fixed in:3.30.0+dfsg-0ubuntu0.24.04.1USN-8561-1

freerdp3-x11Ubuntu

Fixed in:3.30.0+dfsg-0ubuntu0.24.04.1USN-8561-1

libfreerdp3-3Ubuntu

Fixed in:3.30.0+dfsg-0ubuntu0.24.04.1USN-8561-1

TridentStack Control can deploy fixes like this automatically across your Windows, macOS, and Linux fleet. See how it works

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 RequiredLow

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

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

Exploit Intelligence

3.45%probability of exploitation in 30 days

88thpercentile

Elevated risk: more likely to be exploited than 88% of all known CVEs.

References

Exploit1

github.com

Other references5

Related Vulnerabilities

Other CWE-122 (Heap-based Buffer Overflow) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2015-3113	Critical	9.8	100%	KEV	Fix
CVE-2024-26256	High	7.8	88%	-	Fix
CVE-2020-25687	Medium	5.9	87%	-	Fix
CVE-2009-3459	High	8.8	87%	KEV	Fix
CVE-2021-21017	High	8.8	86%	KEV	-
CVE-2020-25683	Medium	5.9	86%	-	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 2026-07-15.