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Attack ChainAIDerived

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

  1. Access
    Obtain low-privileged local account
  2. Delivery
    Drop exploit binary on host
  3. Exploit
    Trigger UAF in Graphics Component
  4. Execution
    Reclaim freed object with controlled data
  5. Persist
    Hijack execution to SYSTEM
  6. Impact
    Disable defenses and persist

Vulnerability Assessment

Weakness
CWE
ASVS 5.0
V15 - Secure Coding and Architecture Memory lifecycle management
MITRE ATT&CK

2 techniques across 2 tactics: Execution, Privilege Escalation

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

Exploitation Conditions

Attacker must already possess the ability to execute code locally on the target Windows host under any authenticated low-privileged user account (PR:L, AV:L); no user interaction is required (UI:N) and attack complexity is low (AC:L), meaning no race window or unusual environmental tuning is needed. Limiting factors: remote network exploitation is not possible directly - the bug requires a local code-execution primitive first - and only Windows systems running the vulnerable Graphics Component build are affected; non-Windows hosts and fully patched systems are out of scope.

Impact

The CVSS vector AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H indicates local attack vector, low complexity, low-privileged authentication required, and no user interaction - a typical profile for a post-compromise privilege escalation. EPSS data was not provided, and the vulnerability is not in CISA KEV, indicating no confirmed active exploitation at this time. Microsoft Graphics Component UAFs have historically been attractive secondary-stage exploits paired with browser or document RCEs and have appeared in past KEV listings, so although there is no public PoC referenced here, defenders should treat this as a credible candidate for inclusion in exploit chains. Key data gap: no EPSS score, no confirmed KB number in the provided references, and tag-asserted 'Denial Of Service' impact appears inconsistent with the CIA:H privilege-escalation framing - verify the impact class with Microsoft's advisory before final triage.

Exploit ScenarioDerived

An attacker who has already obtained a low-privileged foothold on a Windows host - for example via a phishing-delivered payload, a compromised user account, or a stolen RDP credential - executes a crafted local program that triggers the use-after-free in the Graphics Component, grooms the kernel/user heap to control the freed object, and pivots to SYSTEM-level code execution. From there the attacker disables EDR, harvests credentials from LSASS, and laterally moves. No public exploit identified at time of analysis, but historically similar Microsoft Graphics UAFs have been weaponized within months of disclosure.

This Week Schedule remediation this week. Why: HIGH severity (CVSS 7.0-8.9).
Patch available 0.1% exploitation probability (EPSS)

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AnalysisAIv1 – Jun 09, 2026

Local privilege escalation in the Microsoft Graphics Component allows an authenticated low-privileged attacker to gain elevated rights via a use-after-free memory corruption flaw (CWE-416). The issue carries a CVSS 7.8 (High) rating with full confidentiality, integrity, and availability impact on the affected host. No public exploit identified at time of analysis, and the vulnerability is not currently listed in CISA KEV.

RemediationAI

Patch available per vendor advisory - apply the Microsoft security update referenced at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-42986 as soon as your patch cycle permits, prioritizing multi-user systems (RDP/Citrix hosts, shared workstations, developer build servers) where low-privileged local accounts can directly stage the exploit. No specific fix version string was supplied in the input, so confirm the exact KB and Windows build number directly from MSRC before deployment. Until patched, reduce blast radius by enforcing least-privilege on interactive logon accounts, removing local-logon rights from service accounts where feasible, enabling Microsoft Defender Exploit Guard / HVCI to constrain kernel exploitation primitives, and restricting interactive sessions on sensitive servers - note that HVCI can break older drivers and disabling interactive logon can break legitimate admin workflows.

Affected VersionsENISA

Windows 10 Version 1809 10.0.17763.0 <10.0.17763.8880
Windows Server 2019 (Server Core installation) 10.0.17763.0 <10.0.17763.8880
Windows 10 Version 22H2 10.0.19045.0 <10.0.19045.7417
Windows 10 Version 1607 10.0.14393.0 <10.0.14393.9234
Windows Server 2012 R2 6.3.9600.0 <6.3.9600.23228
Windows Server 2025 10.0.26100.0 <10.0.26100.32995
Windows 11 Version 23H2 10.0.22631.0 <10.0.22631.7219
Windows Server 2012 6.2.9200.0 <6.2.9200.26132
Windows Server 2016 (Server Core installation) 10.0.14393.0 <10.0.14393.9234
Windows Server 2012 (Server Core installation) 6.2.9200.0 <6.2.9200.26132
Windows Server 2019 10.0.17763.0 <10.0.17763.8880
Windows 11 version 26H1 10.0.28000.0 <10.0.28000.2269
Windows 11 Version 25H2 10.0.26200.0 <10.0.26200.8655
Windows Server 2012 R2 (Server Core installation) 6.3.9600.0 <6.3.9600.23228
Windows 10 Version 21H2 10.0.19044.0 <10.0.19044.7417
Windows Server 2022 10.0.20348.0 <10.0.20348.5256
Windows Server 2016 10.0.14393.0 <10.0.14393.9234
Windows 11 Version 24H2 10.0.26100.0 <10.0.26100.8655
Windows Server 2025 (Server Core installation) 10.0.26100.0 <10.0.26100.32995

Affected Packages

microsoft windows_10_version_1607_10_0_14393_9234 fix: Windows 10 Version 1607 for 32-bit Systems 10.0.14393.9234, Windows 10 Version 1607 for x64-based Systems 10.0.14393.9234
microsoft windows_10_version_1809_10_0_17763_8880 fix: Windows 10 Version 1809 for 32-bit Systems 10.0.17763.8880, Windows 10 Version 1809 for x64-based Systems 10.0.17763.8880
microsoft windows_10_version_21h2_10_0_19044_7417 fix: Windows 10 Version 21H2 for 32-bit Systems 10.0.19044.7417, Windows 10 Version 21H2 for ARM64-based Systems 10.0.19044.7417, Windows 10 Version 21H2 for x64-based Systems 10.0.19044.7417
microsoft windows_10_version_22h2_10_0_19045_7417 fix: Windows 10 Version 22H2 for 32-bit Systems 10.0.19045.7417, Windows 10 Version 22H2 for ARM64-based Systems 10.0.19045.7417, Windows 10 Version 22H2 for x64-based Systems 10.0.19045.7417
microsoft windows_11_version_23h2_10_0_22631_7219 fix: Windows 11 Version 23H2 for ARM64-based Systems 10.0.22631.7219, Windows 11 Version 23H2 for x64-based Systems 10.0.22631.7219
microsoft windows_11_version_24h2_10_0_26100_8655 fix: Windows 11 Version 24H2 for ARM64-based Systems 10.0.26100.8655, Windows 11 Version 24H2 for x64-based Systems 10.0.26100.8655
microsoft windows_11_version_25h2_10_0_26200_8655 fix: Windows 11 Version 25H2 for ARM64-based Systems 10.0.26200.8655, Windows 11 Version 25H2 for x64-based Systems 10.0.26200.8655
microsoft windows_11_version_26h1_10_0_28000_2269 fix: Windows 11 Version 26H1 for ARM64-based Systems 10.0.28000.2269, Windows 11 version 26H1 for x64-based Systems 10.0.28000.2269
microsoft windows_server_2012_6_2_9200_26132 fix: Windows Server 2012 6.2.9200.26132, Windows Server 2012 (Server Core installation) 6.2.9200.26132
microsoft windows_server_2012_r2_6_3_9600_23228 fix: Windows Server 2012 R2 6.3.9600.23228, Windows Server 2012 R2 (Server Core installation) 6.3.9600.23228
microsoft windows_server_2016_10_0_14393_9234 fix: Windows Server 2016 10.0.14393.9234, Windows Server 2016 (Server Core installation) 10.0.14393.9234
microsoft windows_server_2019_10_0_17763_8880 fix: Windows Server 2019 10.0.17763.8880, Windows Server 2019 (Server Core installation) 10.0.17763.8880
microsoft windows_server_2022_10_0_20348_5256 fix: Windows Server 2022 10.0.20348.5256, Windows Server 2022 (Server Core installation) 10.0.20348.5256
microsoft windows_server_2025_10_0_26100_32995 fix: Windows Server 2025 10.0.26100.32995, Windows Server 2025 (Server Core installation) 10.0.26100.32995
euvd windows_10_version_1607 fix: 10.0.14393.9234
euvd windows_10_version_1809 fix: 10.0.17763.8880
euvd windows_10_version_21h2 fix: 10.0.19044.7417
euvd windows_10_version_22h2 fix: 10.0.19045.7417
euvd windows_11_version_23h2 fix: 10.0.22631.7219
euvd windows_11_version_24h2 fix: 10.0.26100.8655
euvd windows_11_version_25h2 fix: 10.0.26200.8655
euvd windows_11_version_26h1 fix: 10.0.28000.2269
euvd windows_server_2012 fix: 6.2.9200.26132
euvd windows_server_2012_r2 fix: 6.3.9600.23228
euvd windows_server_2012_r2_server_core_installation fix: 6.3.9600.23228
euvd windows_server_2012_server_core_installation fix: 6.2.9200.26132
euvd windows_server_2016 fix: 10.0.14393.9234
euvd windows_server_2016_server_core_installation fix: 10.0.14393.9234
euvd windows_server_2019 fix: 10.0.17763.8880
euvd windows_server_2019_server_core_installation fix: 10.0.17763.8880
euvd windows_server_2022 fix: 10.0.20348.5256
euvd windows_server_2025 fix: 10.0.26100.32995
euvd windows_server_2025_server_core_installation fix: 10.0.26100.32995

Source: OSV (Open Source Vulnerabilities)

Affects your stack

Affects 33 packages in microsoft, euvd

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

Technical ContextAI · show details

The Microsoft Graphics Component is a shared Windows subsystem responsible for rendering, font handling, and image/graphics object management used by GDI, DirectX, and related kernel/user-mode graphics paths. CWE-416 (Use After Free) indicates that a graphics object's memory is freed while a dangling reference remains reachable; subsequent dereference of that pointer allows an attacker who controls the freed slot's contents to corrupt structures and hijack execution flow. Because graphics objects are commonly handled by privileged components on Windows, controlled reuse of the freed allocation is a classic primitive for local elevation to SYSTEM or higher integrity.

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  • Exploit and PoC references, threat intelligence from 22 sources

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Severity by source

Vendor (microsoft) PRIMARY 7.8 HIGH
AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CIRCL (temporal) 6.8 MEDIUM

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
High
Availability
High

DescriptionCVE.org

Use after free in Microsoft Graphics Component allows an authorized attacker to elevate privileges locally.

Threat Intelligence Overview

EPSS Score
0.1%
Top 76% exploitable
Vendor Action
See Below
Required. The vulnerability documented by this CVE requires customer action to resolve.
Vendor Status
Publicly Disclosed:No
Exploited:No
Latest Software Release:Exploitation More Likely
Data Quality
6 sources
Confidence: High

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 HIGH
CISA KEV No
Public POC No
EPSS 0.1%
Patch available Yes
Active threat No
Deciding rule
HIGH severity (CVSS 7.0-8.9)
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
Total

Priority Score

39
Low Medium High Critical
KEV: 0
EPSS: 0
CVSS: +39
PoC: 0
Weaponized: 0
Threat intel: 0
Gov advisory: 0

Attack Technique

Use-after-free vulnerabilities occur when a program continues to access memory through a pointer after that memory has been deallocated.

Memory corruption occurs when a program writes data beyond the boundaries of allocated memory regions or accesses memory in unintended ways, violating the integrity of the process's address space.

Denial of Service attacks render applications or systems unavailable by overwhelming resources or triggering failure conditions.

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