CVE-2026-109253

MEDIUM
MEDIUM Priority: 0.02 BB Relevance: 52/100
Published: 2026-10-12 Modified: 2026-11-02 First seen: 2026-11-02 Status: active

Attack Surface

Network No Auth

CVSS Vector Breakdown

AV: Network
AC: High
PR: None
UI: Passive
S: X
AT: Present
VC: None
VI: None
VA: High

Description

FreeRDP from 3.9.0 before 3.32.0 contains an out-of-bounds read vulnerability in the RDPEAR NDR scalar readers, which check value length before consuming alignment padding. Malicious or compromised RDP servers can send crafted unaligned RDPEAR payloads, such as CreateApReqAuthenticatorReq messages, to clients using Remote Credential Guard, causing over-reads and potentially crashing the client process.

Weakness Classification (1)

Affected Software (1)

VendorProductVersion
freerdp freerdp 3.9.0 – 3.32.0

Bug Bounty Relevance

52 / 100
✓ Network accessible
✓ No authentication

CVSS Score

6.0 / 10.0 v4.0
CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

EPSS — Exploitation Probability

0.29%
Raw Score 0.002890
Percentile 21.6%
Date 2026-11-05

EPSS Trend

2026-11-05
0.00289
2026-11-04
0.00289
2026-11-03
0.00289
2026-11-02
0.00285

Intelligence Sources

nvd ref →