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Remote POS Driver EUVDEUVD-2026-99175

| CVE-2026-70135 MEDIUM
Out-of-bounds Read (CWE-125)
2026-10-13 secure@microsoft.com GHSA-xv32-gjv8-95f3
5.5
CVSS 3.1 · Vendor: microsoft
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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata – not a confirmed exploit chain

  1. Access
    Obtain low-privileged local access
  2. Exploit
    Interact with Remote POS Driver interface
  3. Execution
    Trigger out-of-bounds read (CWE-125)
  4. Impact
    Disclose adjacent memory contents

Vulnerability Assessment

Weakness
CWE
ASVS 5.0
V15 - Secure Coding and Architecture Bounds checking, read limits
MITRE ATT&CK

1 technique across 1 tactic: Collection

The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up.

Exploitation Conditions

Exploitation requires local access to the affected Windows host with at least low-level user privileges (PR:L), and the ability to interact with the Windows Remote POS Driver component; it cannot be triggered remotely (AV:L). No user interaction is needed (UI:N). The impact is limited to information disclosure (C:H, I:N, A:N) - the attacker can read out-of-bounds memory but cannot modify data or affect availability. The requirement for pre-existing local authenticated access is the principal limiting factor reducing real-world risk.

Impact

This is a genuinely low-to-moderate priority issue despite its HIGH confidentiality impact. The CVSS 3.1 vector (AV:L/AC:L/PR:L/UI:N) requires the attacker to already have local access and low-level privileges on the host, which sharply limits reach - this is not a remotely exploitable flaw. Multiple signals corroborate the low real-world urgency: it is NOT listed in CISA KEV, SSVC scores Exploitation as 'none' and Automatable as 'no', and SSVC rates Technical Impact only as 'partial' (consistent with an information-disclosure-only bug that has I:N/A:N). No EPSS score was provided in the input, so exploitation probability cannot be quantified. There is no public exploit identified at time of analysis. The signals are mutually consistent - no conflicts - pointing to a low-likelihood, limited-impact local information-disclosure vulnerability rather than a widespread threat. The main residual risk is as a secondary primitive in a local privilege-escalation or post-compromise chain (e.g., leaking memory contents such as pointers or secrets to defeat ASLR or harvest data).

Exploit ScenarioDerived

An attacker who has already gained a foothold on a Windows host as a low-privileged local user runs a crafted process or sends malformed input to the Remote POS Driver, triggering an out-of-bounds read that returns adjacent kernel or driver memory contents. The leaked data (such as memory addresses or sensitive buffers) could aid a follow-on exploit. No public proof-of-concept exploit is known, and the attack cannot be performed remotely or without local authenticated access.

This Month Plan within 30 days. Why: MEDIUM severity (CVSS 4.0-6.9).
Patch available 0.4% exploitation probability (EPSS)

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AnalysisAIv1 – Oct 14, 2026

Information disclosure from an out-of-bounds read in the Windows Remote POS Driver allows an authenticated local user to read memory past the boundary of an intended buffer, potentially exposing sensitive data handled in kernel context. Exploitation requires local access with low privileges (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N), needs no user interaction, and is limited to confidentiality impact - no integrity or availability effect - which caps real-world severity despite the HIGH confidentiality rating. No public exploit code and no confirmed active exploitation were identified at time of analysis (CISA SSVC: Exploitation = none, Automatable = no), and the requirement for pre-existing local authenticated access is the principal factor reducing risk.

RemediationAI

Patch status per vendor data: a fix is available from Microsoft. Apply the current cumulative/security update for each affected Windows build from the MSRC advisory (https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-70135); the version ranges in the input data indicate the first fixed builds as 10.0.22631.7652 for Windows 11 23H2, 10.0.26100.33650 for Windows Server 2025, 10.0.26100.9711 for Windows 11 24H2, 10.0.26200.9711 for Windows 11 25H2, 10.0.26300.9711 for Windows 11 26H2, 10.0.28000.3231 for Windows 11 26H1, 10.0.19044.7807 for Windows 10 21H2/22H2, 10.0.14393.9612 for Windows 10 1607 and Windows Server 2016, 10.0.17763.9376 for Windows 10 1809 and Windows Server 2019, and 10.0.20348.5761 for Windows Server 2022. Because the prerequisite is local access at low privilege and the impact is read-only disclosure, update prioritization can be moderate; where immediate patching is not possible, compensating controls include removing unnecessary local interactive logon rights and restricting which accounts may run on hosts that use point-of-sale peripherals, noting that this reduces the pool of potential callers but does not remove the flawed code path, and monitoring for unexpected access to the POS device interface, acknowledging that such detection is best-effort since the read itself is not destructive. Disabling or uninstalling the Remote POS Driver entirely on systems that do not use point-of-sale hardware eliminates the exposure, at the cost of breaking POS peripheral functionality on hosts that do need it; no other vendor-documented workaround is identified in the available data.

Affected VersionsENISA

Windows 11 Version 23H2 10.0.22631.0 <10.0.22631.7652
Windows Server 2016 (Server Core installation) 10.0.14393.0 <10.0.14393.9612
Windows Server 2025 10.0.26100.0 <10.0.26100.33650
Windows Server 2019 (Server Core installation) 10.0.17763.0 <10.0.17763.9376
Windows 10 Version 22H2 10.0.19045.0 <10.0.19044.7807
Windows 10 Version 1809 10.0.17763.0 <10.0.17763.9376
Windows 11 Version 26H2 10.0.26300.0 <10.0.26300.9711
Windows 10 Version 21H2 10.0.19044.0 <10.0.19044.7807
Windows Server 2019 10.0.17763.0 <10.0.17763.9376
Windows Server 2016 10.0.14393.0 <10.0.14393.9612
Windows Server 2025 (Server Core installation) 10.0.26100.0 <10.0.26100.33650
Windows 11 Version 24H2 10.0.26100.0 <10.0.26100.9711
Windows 11 Version 25H2 10.0.26200.0 <10.0.26200.9711
Windows 10 Version 1607 10.0.14393.0 <10.0.14393.9612
Windows Server 2022 10.0.20348.0 <10.0.20348.5761
Windows 11 version 26H1 10.0.28000.0 <10.0.28000.3231

Affected Packages

euvd windows_10_version_1607 fix: 10.0.14393.9612
euvd windows_10_version_1809 fix: 10.0.17763.9376
euvd windows_10_version_21h2 fix: 10.0.19044.7807
euvd windows_10_version_22h2 fix: 10.0.19044.7807
euvd windows_11_version_23h2 fix: 10.0.22631.7652
euvd windows_11_version_24h2 fix: 10.0.26100.9711
euvd windows_11_version_25h2 fix: 10.0.26200.9711
euvd windows_11_version_26h1 fix: 10.0.28000.3231
euvd windows_11_version_26h2 fix: 10.0.26300.9711
euvd windows_server_2016 fix: 10.0.14393.9612
euvd windows_server_2016_server_core_installation fix: 10.0.14393.9612
euvd windows_server_2019 fix: 10.0.17763.9376
euvd windows_server_2019_server_core_installation fix: 10.0.17763.9376
euvd windows_server_2022 fix: 10.0.20348.5761
euvd windows_server_2025 fix: 10.0.26100.33650
euvd windows_server_2025_server_core_installation fix: 10.0.26100.33650

Source: OSV (Open Source Vulnerabilities)

Affects your stack

Affects 16 packages in euvd

Checking this CVE against your own stacks and servers is part of the Basic plan and up.

Technical ContextAI · show details

The issue is a classic CWE-125 out-of-bounds read in a Microsoft Windows kernel-mode driver, the Remote POS Driver, which services point-of-sale peripheral communication on the local host. Flaws of this class typically arise when a driver trusts a length or offset field supplied through its device I/O control (IOCTL) interface or other local IPC surface and then reads further than the allocated buffer, or when an internal buffer is indexed without adequate boundary validation. Because the driver runs in kernel mode, the over-read can return adjacent kernel memory contents back to the calling process, which may disclose pointers or other internal state; the available data does not confirm any follow-on exploitation chain such as an ASLR bypass. The affected component is the driver itself rather than a network-facing service, and no CPE strings were supplied in the source data, so the affected Windows builds are identified from the EUVD version ranges instead. The CVSS vector (AV:L, PR:L, UI:N) confirms the attack surface is a local, low-privileged caller rather than a remote unauthenticated attacker.

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Severity by source

Vendor (microsoft) PRIMARY 5.5 MEDIUM
AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
vuln.today AI 5.5 MEDIUM

Local vector and low privilege required (AV:L/PR:L) per MSRC; out-of-bounds read yields confidentiality-only impact, so C:H with I:N and A:N.

3.1 AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
4.0 AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N

Primary rating from Vendor (microsoft).

CVSS VectorVendor: microsoft

Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
None

Lifecycle Timeline

2
Patch available
Oct 13, 2026 - 20:20 EUVD
CVE Published
Oct 13, 2026 - 19:19 cve.org
MEDIUM 5.5

DescriptionCVE.org

Out-of-bounds read in Windows Remote POS Driver allows an authorized attacker to disclose information locally.

Threat Intelligence Overview

EPSS Score
0.4%
Top 66% exploitable
Prevalence
Ubiquitous
Ships in-box across all supported Windows client and server editions
Vendor Status
Publicly Disclosed:No
Exploited:No
Latest Software Release:Exploitation Less Likely
Data Quality
5 sources
Confidence: Medium

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue
Severity MEDIUM
CISA KEV No
Public POC No
EPSS 0.4%
Patch available Yes
Active threat No
Deciding rule
MEDIUM severity (CVSS 4.0-6.9)
What every action level means
Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.
Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.
This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.
This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.
Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

SSVC Decision· derived
Defer
Exploitation
None
System Exposure· derived
Small
Automatable
No
Human Impact· derived
Medium
Technical Impact
Partial

Priority Score

28
Low Medium High Critical
KEV: 0
EPSS: 0
CVSS: +28
PoC: 0
Weaponized: 0
Threat intel: 0
Gov advisory: 0

Attack Technique

A buffer overflow occurs when a program writes more data to a memory buffer than it was allocated to hold, causing the excess data to spill into adjacent memory regions.

Information disclosure occurs when an application unintentionally exposes sensitive data that aids attackers in reconnaissance or directly compromises security.

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