Is CVE-2026-26271 in the CISA KEV catalog?

No. CVE-2026-26271 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2026-26271?

CVE-2026-26271 has a CVSS v3 base score of 5.3 (MEDIUM).

What is the EPSS score for CVE-2026-26271?

CVE-2026-26271 has an EPSS score of 0.24% (15th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2026-26271?

Upgrade freerdp3 on ubuntu 24.04 to 3.5.1+dfsg1-0ubuntu1.4 or later. Fixes are available for 2 affected products.

CVE & CISA-KEV Catalog

CVE-2026-26271

MEDIUM

5.3

CVSS v3

NVD

Description

FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to version 3.23.0, a buffer overread in `freerdp_image_copy_from_icon_data()` (libfreerdp/codec/color.c) can be triggered by crafted RDP Window Icon (TS_ICON_INFO) data. The bug is reachable over the network when a client processes icon data from an RDP server (or from a man-in-the-middle). Version 3.23.0 fixes the issue.

CWE-126Buffer Over-read

How to fix

Remediation Available

freerdp3Ubuntu

Fixed in:3.5.1+dfsg1-0ubuntu1.4USN-8105-1

Fixed in:3.16.0+dfsg-2ubuntu0.3USN-8105-1

libfreerdp3-3Ubuntu

Fixed in:3.5.1+dfsg1-0ubuntu1.4USN-8105-1

Fixed in:3.16.0+dfsg-2ubuntu0.3USN-8105-1

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 InteractionNone

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityNone

AvailabilityLow

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

Exploit Intelligence

0.24%probability of exploitation in 30 days

15thpercentile

Low risk: more likely to be exploited than 15% of all known CVEs.

References

Patch2

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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 2026-02-27.