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CVE-2026-109677 Details

Description

FreeRDP from 2.0.0-beta1 before 3.28.0 contains an out-of-bounds read vulnerability in smartcard_LocateCardsByATRA_Call because the ATR pattern cbAtr byte count is not capped. Malicious RDP servers can send crafted ATR mask arrays to use query timing as an oracle, leaking heap memory bit-by-bit to defeat ASLR and aid RCE exploits.

Metrics

CVSS 3.x Severity and Vector Strings:

CNA: [email protected]CVSS-B:6.5 MEDIUMVector:CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N

References to Advisories, Solutions, and Tools

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URL	Source(s)	Tag(s)
https://github.com/FreeRDP/FreeRDP/commit/ececc5cbd0646ef012ca178322e6ef922a11f0c1	[email protected]	Patch
https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-8m97-wwx3-r8vj	[email protected]	ExploitVendor Advisory
https://www.vulncheck.com/advisories/freerdp-2.0.0-beta1-before-3.28.0-out-of-bounds-read-via-locatecardsbyatra-handler	[email protected]	PatchThird Party Advisory

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-125	Out-of-bounds Read	[email protected]

Affected Products

Product	Versions
freerdp freerdp	>= 2.0.0, < 3.28.0
CPE cpe:2.3:a:freerdp:freerdp:::::::: Remediation No remediation found in references.

Change History

3 change records found show changes

Date	Action	Recorded By
Nov 2, 2026	Initial Analysis	[email protected]
Oct 13, 2026	CVE Modified	CISA-ADP
Oct 13, 2026	New CVE Received	[email protected]