Is CVE-2026-27015 in the CISA KEV catalog?

No. CVE-2026-27015 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2026-27015?

CVE-2026-27015 has a CVSS v3 base score of 6.5 (MEDIUM).

What is the EPSS score for CVE-2026-27015?

CVE-2026-27015 has an EPSS score of 0.26% (17th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2026-27015?

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-2026-27015

MEDIUM

6.5

CVSS v3

NVD

Description

FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to version 3.23.0, a missing bounds check in `smartcard_unpack_read_size_align()` (`libfreerdp/utils/smartcard_pack.c:1703`) allows a malicious RDP server to crash the FreeRDP client via a reachable `WINPR_ASSERT` → `abort()`. The crash occurs in upstream builds where `WITH_VERBOSE_WINPR_ASSERT=ON` (default in FreeRDP 3.22.0 / current WinPR CMake defaults). Smartcard redirection must be explicitly enabled by the user (e.g., `xfreerdp /smartcard`; `/smartcard-logon` implies `/smartcard`). Version 3.23.0 fixes the issue.

CWE-617

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 InteractionRequired

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityNone

AvailabilityHigh

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

Exploit Intelligence

0.26%probability of exploitation in 30 days

17thpercentile

Low risk: more likely to be exploited than 17% of all known CVEs.

References

Patch2

Related Vulnerabilities

Other CWE-617 vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2020-8617	High	7.5	93%	-	Fix
CVE-2020-36222	High	7.5	78%	-	Fix
CVE-2006-5779	High	7.5	75%	-	Fix
CVE-2021-27212	High	7.5	64%	-	Fix
CVE-2018-5740	High	7.5	59%	-	Fix
CVE-2023-28425	Medium	5.5	55%	-	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 2026-02-27.