Skip to main content

Windows Print Driver CVE-2026-96860

| EUVDEUVD-2026-99784 MEDIUM
Out-of-bounds Read (CWE-125)
2026-10-13 secure@microsoft.com GHSA-rg77-3xxm-99m7
5.5
CVSS 3.1 · Vendor: microsoft
View

Attack ChainAIDerived

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

  1. Access
    Obtain low-privileged local access
  2. Delivery
    Interact with USB Print Driver interface
  3. Exploit
    Trigger out-of-bounds read (CWE-125)
  4. Execution
    Read adjacent memory contents
  5. Impact
    Disclose sensitive information locally

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

Requires the attacker to already have authenticated local, low-privilege access to the affected Windows system (PR:L, AV:L) and the ability to exercise the USB Print Driver code path. No user interaction by a victim is needed (UI:N). The exploitation is limited to information disclosure only (C:H, I:N, A:N) - it cannot by itself modify data or crash the system - and it cannot be performed remotely, which substantially narrows realistic exposure to scenarios where an attacker already has a foothold on the host. All listed Windows 10/11 and Windows Server builds (2012 through 2025, including Server Core) below the patched revisions are affected.

Impact

This is a genuine but lower-tier priority. The CVSS 3.1 vector (AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N, base 5.5 Medium) describes a locally exploitable, low-privilege information-disclosure flaw with no integrity or availability impact and an unchanged scope - meaning the attacker must already have authenticated local access to the target host. All exploitation signals point the same direction and reinforce one another rather than conflict: CISA's SSVC decision framework rates Exploitation as 'none', Automatable as 'no', and Technical Impact as only 'partial', and no EPSS score or KEV listing was provided in the input. There is no indication of public exploit code. The one mild tension worth noting is that the 'Buffer Overflow' tag and CWE-125 (out-of-bounds READ) imply a memory-safety condition, but C:H with I:N/A:N correctly reflects that this is a read/disclosure primitive, not a write/code-execution bug - so the 'Buffer Overflow' label overstates the impact class. Bottom line: a real, patch-worthy local information-disclosure issue, but not an urgent, mass-exploitable threat; prioritize via normal Patch Tuesday cadence rather than emergency response.

Exploit ScenarioDerived

A low-privileged user already logged on to a Windows host (or malware running in that user's context) interacts with the USB print driver to trigger an out-of-bounds read, causing adjacent kernel/driver memory to be returned to the attacker. The disclosed memory could contain sensitive data or pointers useful for defeating ASLR as a stepping stone in a larger local privilege-escalation chain. No public proof-of-concept was identified in the provided data, and local access plus the required privileges limit the practical reach of the attack.

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

Get an e-mail when this CVE is exploited, patched or re-scored. Free account.

Alert me

AnalysisAIv1 – Oct 13, 2026

Information disclosure in the Windows USB Print Driver allows a locally authenticated, low-privilege attacker to read beyond intended buffer boundaries and leak contents of driver memory on affected Windows 10, Windows 11, and Windows Server builds (2012 through 2025, including Server Core installations). Exploitation requires an existing foothold on the host with the ability to exercise the USB print driver code path (CVSS:3.1/AV:L/AC:L/PR:L/UI:N), needs no victim interaction, and is limited to confidentiality impact - no data modification, no denial of service, and no remote vector. No public exploit code has been identified at time of analysis, CISA's SSVC assessment records exploitation as 'none' with partial technical impact, and an EUVD record (EUVD-2026-99784) tracks the same affected build list; vendor patches are available, making this a genuine but lower-tier patching priority compared with remotely reachable issues.

RemediationAI

Vendor-released patch: apply the Microsoft security update referenced by the MSRC advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-96860, which resolves CVE-2026-96860 by bringing each affected build to its fixed revision - Windows 11 26H2 to 10.0.26300.9711, 26H1 to 10.0.28000.3231, 25H2 to 10.0.26200.9711, 24H2 to 10.0.26100.9711, and 23H2 to 10.0.22631.7652; Windows 10 22H2 and 21H2 to 10.0.19044.7807, 1809 to 10.0.17763.9376, and 1607 to 10.0.14393.9612; Windows Server 2025 to 10.0.26100.33650, Server 2022 to 10.0.20348.5761, Server 2019 to 10.0.17763.9376, Server 2016 to 10.0.14393.9612, Server 2012 R2 to 6.3.9600.23470, and Server 2012 to 6.2.9200.26434. Because the flaw requires an attacker to already hold low-privilege local access and to reach the USB Print Driver code path, prioritize patching multi-user and shared-access systems such as RDP hosts, VDI images, kiosks, and print servers, and treat single-user workstations as lower urgency. Where immediate patching is not possible, compensating controls should concentrate on shrinking the local attack surface: restrict who can install or load printer drivers via Group Policy Point-and-Print restrictions, remove unused USB printer drivers and disable USB print/redirection where business processes allow (trade-off: USB-attached and redirected printers stop working for legitimate users), and avoid granting interactive local sessions on sensitive hosts to untrusted accounts - recognizing that none of these measures fixes the underlying out-of-bounds read and that the residual risk is a memory-disclosure primitive an attacker could use to advance a later-stage exploit, even though no public exploit code has been identified at time of analysis.

Affected VersionsENISA

Windows 11 Version 26H2 10.0.26300.0 <10.0.26300.9711
Windows Server 2025 (Server Core installation) 10.0.26100.0 <10.0.26100.33650
Windows 11 version 26H1 10.0.28000.0 <10.0.28000.3231
Windows Server 2012 6.2.9200.0 <6.2.9200.26434
Windows Server 2016 (Server Core installation) 10.0.14393.0 <10.0.14393.9612
Windows Server 2019 10.0.17763.0 <10.0.17763.9376
Windows 11 Version 25H2 10.0.26200.0 <10.0.26200.9711
Windows 10 Version 1809 10.0.17763.0 <10.0.17763.9376
Windows 10 Version 22H2 10.0.19045.0 <10.0.19044.7807
Windows 10 Version 1607 10.0.14393.0 <10.0.14393.9612
Windows 10 Version 21H2 10.0.19044.0 <10.0.19044.7807
Windows Server 2025 10.0.26100.0 <10.0.26100.33650
Windows Server 2016 10.0.14393.0 <10.0.14393.9612
Windows Server 2012 (Server Core installation) 6.2.9200.0 <6.2.9200.26434
Windows 11 Version 24H2 10.0.26100.0 <10.0.26100.9711
Windows Server 2019 (Server Core installation) 10.0.17763.0 <10.0.17763.9376
Windows 11 Version 23H2 10.0.22631.0 <10.0.22631.7652
Windows Server 2012 R2 6.3.9600.0 <6.3.9600.23470
Windows Server 2022 10.0.20348.0 <10.0.20348.5761
Windows Server 2012 R2 (Server Core installation) 6.3.9600.0 <6.3.9600.23470

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_2012 fix: 6.2.9200.26434
euvd windows_server_2012_r2 fix: 6.3.9600.23470
euvd windows_server_2012_r2_server_core_installation fix: 6.3.9600.23470
euvd windows_server_2012_server_core_installation fix: 6.2.9200.26434
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 20 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 vulnerability is an out-of-bounds read (CWE-125) in the Windows USB Print Driver, the component that mediates communication between the operating system's printing stack and USB-attached printers. In this flaw class, the driver trusts a length, index, or descriptor field supplied through the device or print path and then reads past the end of an allocated buffer, returning adjacent memory contents to the caller instead of failing cleanly. Because the affected code runs in a privileged context, the leaked data can include kernel or driver memory that is otherwise inaccessible to a low-privileged user, which is why confidentiality is rated High (C:H) even though integrity and availability are untouched (I:N/A:N). The scope is unchanged (S:U), so the disclosure stays within the driver's security authority and does not by itself give the attacker code execution; the practical value of such a leak is typically as a disclosure primitive or a building block in a larger chain. The attack surface is local only (AV:L) and requires low privileges (PR:L) plus the ability to drive the USB print code path, which materially limits realistic exposure to hosts where an attacker already holds a user-level session. The EUVD affected-version data identifies the impacted products purely by Windows build numbers rather than discrete CPE strings, spanning the Windows 10 servicing branches, Windows 11 feature updates, and the long-lived Windows Server generations including Server Core.

Know when Windows gets its next vulnerability

  • Watch products and get an email when something new is published
  • Check this CVE against your own stack and servers
  • Exploit and PoC references, threat intelligence from 22 sources

No credit card · 7-day full trial

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-only driver flaw exploitable by an authenticated low-privileged user (AV:L/PR:L), yielding memory disclosure only, so C:H with I:N/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 - 19:21 cve.org
MEDIUM 5.5

DescriptionCVE.org

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

Threat Intelligence Overview

EPSS Score
0.4%
Top 68% exploitable
Prevalence
Ubiquitous
Microsoft Windows client and server OS, present in nearly all environments
Vendor Status
Publicly Disclosed:No
Exploited:No
Latest Software Release:Exploitation Unlikely
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.

CVE-2025-52691 CRITICAL POC
10.0 Dec 29

Unauthenticated remote code execution in SmarterTools SmarterMail lets an attacker upload arbitrary files to any locatio

CVE-2019-0803 HIGH POC
7.8 Apr 09

Windows Win32k fails to properly handle objects in memory, allowing local privilege escalation exploited in the wild in

CVE-2020-1472 MEDIUM POC
5.5 Aug 17

A privilege escalation vulnerability (CVSS 5.5). Risk factors: actively exploited (KEV-listed), EPSS 94% exploitation pr

CVE-2025-33053 HIGH POC
8.8 Jun 10

Windows Internet Shortcut Files (.url) contain an external control vulnerability (CVE-2025-33053, CVSS 8.8) that enables

CVE-2025-33073 HIGH POC
8.8 Jun 10

Windows SMB contains an improper access control vulnerability (CVE-2025-33073, CVSS 8.8) enabling authenticated attacker

CVE-2013-10047 CRITICAL POC
9.3 Aug 01

An unrestricted file upload vulnerability exists in MiniWeb HTTP Server <= Build 300 that allows unauthenticated remote

CVE-2012-10030 CRITICAL POC
9.3 Aug 05

FreeFloat FTP Server contains multiple critical design flaws that allow unauthenticated remote attackers to upload arbit

CVE-2025-34101 CRITICAL POC
9.3 Jul 10

Serviio Media Server versions 1.4 through 1.8 on Windows contain an unauthenticated command injection in the /rest/actio

CVE-2025-34095 CRITICAL POC
9.3 Jul 10

Mako Server versions 2.5 and 2.6 contain an unauthenticated OS command injection via the tutorial interface at examples/

CVE-2025-11953 CRITICAL POC
9.8 Nov 03

React Native Metro Development Server binds to external interfaces by default and contains an OS command injection endpo

CVE-2026-96951 HIGH POC
8.8 Oct 13

Command injection in the Windows Shell lets remote, unauthenticated attackers bypass a Windows security feature and then

CVE-2025-24054 MEDIUM POC
6.5 Mar 11

External control of file name or path in Windows NTLM allows an unauthorized attacker to perform spoofing over a network

This site uses cookies essential for authentication and security. No tracking or analytics cookies are used. Privacy Policy