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Microsoft Graphics Component CVE-2026-69467

| EUVDEUVD-2026-73514 HIGH
Stack-based Buffer Overflow (CWE-121)
2026-09-08 secure@microsoft.com GHSA-72c9-55fp-f8c3
7.8
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 local user-level code execution
  2. Delivery
    Craft malicious input targeting Graphics Component
  3. Exploit
    Trigger stack-based buffer overflow (CWE-121)
  4. Execution
    Overwrite return address via stack corruption
  5. Persist
    Redirect execution to attacker-controlled payload
  6. Impact
    Achieve SYSTEM-level privilege escalation

Vulnerability Assessment

Weakness
CWE
ASVS 5.0
V15 - Secure Coding and Architecture Stack buffer bounds checking
MITRE ATT&CK

1 technique across 1 tactic: Execution

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

Exploitation Conditions

The attacker must have local access to the target Windows system with at least a standard (low-privileged) user account - this is reflected in the CVSS PR:L rating. No user interaction beyond the attacker's own actions is required (UI:N), and no special non-default configuration is needed; the Microsoft Graphics Component is present and active by default across all affected Windows 10 and 11 versions. Exploitation is limited by the requirement for prior local code execution: the attacker cannot trigger this remotely without first compromising an account or service on the machine. Remote Desktop, VDI, shared terminal server sessions, and browser sandbox escapes are realistic delivery paths that provide the local foothold needed to leverage this escalation.

Impact

The CVSS 7.8 score accurately reflects a high-severity local privilege escalation with low attack complexity and no user interaction required - an attacker already on the box with a standard account can reliably escalate. The AV:L vector limits exposure compared to network-reachable vulnerabilities: the attacker must first obtain local code execution, making this most valuable as a second-stage post-compromise primitive. EPSS data is not provided in the input; however, the low complexity and broad Windows footprint (ubiquitous deployment) suggest non-trivial exploitation probability once an attacker is local. No KEV listing and no public POC are identified, so mass exploitation is not currently confirmed. Real-world priority is elevated for environments with shared workstations, RDS/VDI deployments, or where lateral movement via standard user accounts is a realistic threat path. Organizations with strong EDR and least-privilege enforcement have meaningful compensating controls, but patch application remains the definitive mitigation.

Exploit ScenarioDerived

An attacker who has gained a foothold on a Windows system - through phishing, credential theft, or exploitation of a remote service - running under a standard low-privileged user account crafts input that triggers the stack-based buffer overflow in the Graphics Component. With no user interaction or additional authentication required, the attacker overwrites the return address on the stack and redirects execution to shellcode or a ROP chain, elevating the process to SYSTEM-level privileges. No public POC exists at time of analysis, but the low-complexity rating indicates exploitation is straightforward once the overflow offset is determined.

This Week Schedule remediation this week. Why: HIGH severity (CVSS 7.0-8.9).
Patch available 0.3% exploitation probability (EPSS)

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AnalysisAIv1 – Sep 09, 2026

Stack-based buffer overflow in the Microsoft Graphics Component enables a locally authenticated attacker with standard user privileges to escalate to full system control across Windows 10 and Windows 11. The flaw (CWE-121) is triggered locally with low complexity and no user interaction, yielding high confidentiality, integrity, and availability impact per the CVSS:3.1 vector. No public exploit code or CISA KEV listing is identified at time of analysis, but the low-privilege requirement and zero interaction needed make this a realistic post-compromise escalation primitive.

RemediationAI

Apply the Microsoft-released patch via Windows Update or WSUS. Target builds are: Windows 10 21H2 → 10.0.19044.7725; Windows 10 22H2 → 10.0.19045.7725; Windows 11 23H2 → 10.0.22631.7582; Windows 11 24H2 → 10.0.26100.9445; Windows 11 25H2 → 10.0.26200.9445; Windows 11 26H1 → 10.0.28000.2954. Consult the official Microsoft Security Response Center advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-69467 for patch deployment guidance. Where immediate patching is not feasible, restrict local user logon rights to reduce the pool of potential attackers; apply AppLocker or WDAC policies to limit unsigned code execution; and deploy EDR solutions capable of detecting stack-pivot and privilege-escalation behaviors. These compensating controls add friction but do not eliminate the vulnerability.

Affected VersionsENISA

Windows 11 Version 23H2 10.0.22631.0 <10.0.22631.7582
Windows 11 Version 25H2 10.0.26200.0 <10.0.26200.9445
Windows 11 version 26H1 10.0.28000.0 <10.0.28000.2954
Windows 10 Version 21H2 10.0.19044.0 <10.0.19044.7725
Windows 11 Version 24H2 10.0.26100.0 <10.0.26100.9445
Windows 10 Version 22H2 10.0.19045.0 <10.0.19045.7725

Affected Packages

euvd windows_10_version_21h2 fix: 10.0.19044.7725
euvd windows_10_version_22h2 fix: 10.0.19045.7725
euvd windows_11_version_23h2 fix: 10.0.22631.7582
euvd windows_11_version_24h2 fix: 10.0.26100.9445
euvd windows_11_version_25h2 fix: 10.0.26200.9445
euvd windows_11_version_26h1 fix: 10.0.28000.2954

Source: OSV (Open Source Vulnerabilities)

Affects your stack

Affects 6 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 affected component is the Microsoft Graphics Component, a core Windows subsystem handling rendering, font/image processing, and GDI operations present in all supported Windows 10 and 11 releases. CWE-121 (Stack-based Buffer Overflow) describes a condition where user-supplied or internally processed data exceeds the bounds of a stack-allocated buffer, overwriting adjacent stack frames, return addresses, or saved registers. Because the stack is executable or return-oriented programming can be applied, reliable code execution is typically achievable. The component is loaded in-process across numerous Windows services and user-mode applications, making the attack surface broad for any locally logged-in user. Affected CPE ranges span Windows 10 21H2/22H2 and Windows 11 23H2/24H2/25H2/26H1.

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  • Check this CVE against your own stack and servers
  • 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
vuln.today AI 7.8 HIGH

Local access with low-privilege account sufficient; no interaction needed; stack overflow yields full C/I/A impact within unchanged scope.

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

Lifecycle Timeline

2
Patch available
Sep 08, 2026 - 18:35 EUVD
CVE Published
Sep 08, 2026 - 18:19 nvd
HIGH 7.8

DescriptionCVE.org

Stack-based buffer overflow in Microsoft Graphics Component allows an authorized attacker to elevate privileges locally.

Executive ViewAI

Why It Matters

Microsoft Windows 10 and Windows 11 Graphics Component contains a stack buffer overflow (CWE-121) allowing any local user to escalate from standard privileges to full system control without requiring special interaction or user action. Organizations with Windows desktop or laptop deployments face elevated risk of account compromise escalating to infrastructure-wide control; this is particularly critical for administrative users or systems handling sensitive data.

Business Impact: High
Compensating Controls

Apply vendor patch.

Threat Intelligence Overview

EPSS Score
0.3%
Top 74% exploitable
Prevalence
Ubiquitous
Windows 10/11 dominates global desktop OS deployments
Vendor Status
Publicly Disclosed:No
Exploited:No
Latest Software Release:Exploitation More Likely
Data Quality
4 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 HIGH
CISA KEV No
Public POC No
EPSS 0.3%
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
Defer
Exploitation
None
System Exposure· derived
Small
Automatable
No
Human Impact
High
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

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.

A stack-based buffer overflow occurs when a program writes more data to a buffer located on the stack than it was allocated to hold.

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