Evidence used
- No CISA KEV confirmation is currently recorded.
- EPSS is 0.57% for the current model date.
BlackTreeCVE IntelligenceFull vulnerability report · 2026
CVE-2026-50414High confidence
Windows Media Elevation of Privilege Vulnerability
Microsoft · Windows 11 Version 24H2
7.5HighCVSS 3.1
Within 7 days
Patch availableHigh technical severity; prioritise exposed affected systems while verifying vendor guidance.
R
Open reassessment dashboard →Operational reassessment
Published severity in operational context
Published severityHigh→Operational priority:High, unchanged from published severity.unchanged
Compensating controls
- Validate the affected product branch and deploy the verified fixed release.
- Restrict the affected network interface to trusted sources where business-safe.
- Monitor vendor guidance and exploitation sources for a material change.
Verification
- Confirm that the asset runs Microsoft Windows 11 Version 24H2 and falls inside the recorded affected range.
- Verify the installed build against the product-specific fixed version after deployment.
- Validate exposure, authentication requirements and compensating controls in the actual environment.
- Reopen this reassessment when CVSS, KEV, EPSS, exploit evidence or remediation changes.
Direct vendor intelligence
1 currentAuthoritative vendor CSAF and VEX advisories
Structured product status and remediation from the issuing vendor. Product-state explanations are always visible; large lists can be searched or downloaded.
msrc_CVE-2026-50414 · CSAF 2.0 · revision 2 · finalMicrosoft Security Response CenterWindows Media Elevation of Privilege Vulnerability
The vendor explicitly identifies these products as affected by this CVE.
- Windows 11 Version 26H1 for ARM64-based Systems <10.0.28000.2525
- Windows 11 version 26H1 for x64-based Systems <10.0.28000.2525
- Windows 11 Version 25H2 for x64-based Systems <10.0.26200.8875
- Windows 11 Version 25H2 for ARM64-based Systems <10.0.26200.8875
- Windows Server 2025 (Server Core installation) <10.0.26100.33158
- Windows Server 2025 <10.0.26100.33158
- Windows 11 Version 24H2 for x64-based Systems <10.0.26100.8875
- Windows 11 Version 24H2 for ARM64-based Systems <10.0.26100.8875
- Summary
- Microsoft
- Remediation
- 10.0.26100.33158:Security Update:https://support.microsoft.com/help/5099536
High technical severity; prioritise exposed affected systems while verifying vendor guidance.
Patch available01
What, why and how
Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Media allows an authorized attacker to elevate privileges over a network.
What
Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Media allows an authorized attacker to elevate privileges over a network.
Why
The product contains a concurrent code sequence that requires temporary, exclusive access to a shared resource, but a timing window exists in which the shared resource can be modified by another code sequence operating concurrently.
How
An attacker operating through a network path may attempt exploitation with low privileges. If successful, the issue may gain additional privileges.
What
Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Media allows an authorized attacker to elevate privileges over a network.
Why
The product contains a concurrent code sequence that requires temporary, exclusive access to a shared resource, but a timing window exists in which the shared resource can be modified by another code sequence operating concurrently.
How
An attacker operating through a network path may attempt exploitation with low privileges. If successful, the issue may gain additional privileges.
02
Exploit reality and attack path
CVSS severity, EPSS forecast probability, public exploit material and CISA-confirmed exploitation are separate signals.
Observed exploitation No confirmed evidence
?
Confirmed exploitation and public exploit material are separate signals. Attacks can occur without public proof-of-concept or exploit code.No CISA KEV match was present at the last successful refresh. This means no confirmation from that source, not proof of no exploitation.
Public PoC / exploit material None recorded
?
Confirmed exploitation and public exploit material are separate signals. Attacks can occur without public proof-of-concept or exploit code.No exploit-tagged reference or CISA SSVC proof-of-concept state is currently recorded. Research may still exist outside the structured feeds.
- Likely attack path
- a network path → Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') → gain additional privileges
- Attack surface
- Network
- Privileges required
- Low: a basic authenticated account is required
- User interaction
- None
- Attack complexity
- High: exploitation depends on specific conditions
- Security boundary
- Unchanged: impact remains within the vulnerable component's security authority
- Weakness
?
CWE means Common Weakness Enumeration: a standard category for the underlying weakness. - CWE-362 ↗
CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition'). The product contains a concurrent code sequence that requires temporary, exclusive access to a shared resource, but a timing window exists in which the shared resource can be modified by another code sequence operating concurrently.
- CVSS vector
?
CVSS means Common Vulnerability Scoring System. The vector records the metric values used to calculate technical severity. CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:CCommon Vulnerability Scoring System 3.1: the compact vector below is decoded into plain language.
AVNetworkAttack vector: The vulnerable component can be reached over a network.ACHighAttack complexity: Successful exploitation depends on specific conditions outside the attacker's direct control.PRLowPrivileges required: The attacker needs basic user-level privileges.UINoneUser interaction: No action by another user is required.SUnchangedScope: The security impact remains within the vulnerable component's authority.CHighConfidentiality impact: A successful attack can cause a major loss.IHighIntegrity impact: A successful attack can cause a major loss.AHighAvailability impact: A successful attack can cause a major loss.- Post-exploitation / living off the land
- No specific living-off-the-land technique is confirmed in the structured sources. Monitor normal administration tools for activity inconsistent with the affected service's baseline.
03
Patch and workaround
Operational remediation based on structured source evidence.
- Status
?
Patch availability is based on structured fixed-version fields and authoritative update references. If no fix is verified, check the vendor advisory before making a change. - Patch available
- Affected
- Windows 11 Version 26H1 for ARM64-based Systems <10.0.28000.2525
- Windows 11 version 26H1 for x64-based Systems <10.0.28000.2525
- Windows 11 Version 25H2 for x64-based Systems <10.0.26200.8875
- Windows 11 Version 25H2 for ARM64-based Systems <10.0.26200.8875
- Windows Server 2025 (Server Core installation) <10.0.26100.33158
- Windows Server 2025 <10.0.26100.33158
- Windows 11 Version 24H2 for x64-based Systems <10.0.26100.8875
- Windows 11 Version 24H2 for ARM64-based Systems <10.0.26100.8875
- Fixed
- Windows 11 Version 24H2 for ARM64-based Systems 10.0.26100.8875
- Windows 11 Version 24H2 for x64-based Systems 10.0.26100.8875
- Windows Server 2025 10.0.26100.33158
- Windows Server 2025 (Server Core installation) 10.0.26100.33158
- Windows 11 Version 25H2 for ARM64-based Systems 10.0.26200.8875
- Windows 11 Version 25H2 for x64-based Systems 10.0.26200.8875
- Windows 11 version 26H1 for x64-based Systems 10.0.28000.2525
- Windows 11 Version 26H1 for ARM64-based Systems 10.0.28000.2525
- Action
- 10.0.26100.33158:Security Update:https://support.microsoft.com/help/5099536
- Workaround
- No verified workaround is recorded. If business-safe, reduce exposure to the affected interface and allow only trusted sources until authoritative guidance is available.
04
Evidence and provenance
Published 14 Jul 2026 · Last source change 25 Sept 2026, 18:22 UTC · CWE-362 · Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
CVE recordCVE.org · 5.2
CVSS sourceCNA
EPSS source FIRST · tracked since 2026-08-14
?
The date BlackTree first stored a score for this CVE from the daily FIRST EPSS feed.European sourceENISA EUVD · EUVD-2026-43916
Product sourceVendor CSAF · Microsoft Security Response Center
Remediation sourceVendor CSAF · Microsoft Security Response Center
CWE sourceOther authority
NVD statusNVD enriched
Core structured fields are present and their contributing authorities are shown above.
Material change intelligence
View recent updates ↗What changed after publication
- Affected versionsThe structured affected or fixed version information changed.Microsoft Security Response Center ↗
- Before
- Windows 11 Version 24H2: 10.0.26100.0 < 10.0.26100.8875; Windows 11 Version 25H2: 10.0.26200.0 < 10.0.26200.8875; Windows 11 version 26H1: 10.0.28000.0 < 10.0.28000.2525; Windows Server 2025: 10.0.26100.0 < 10.0.26100.33158; Windows Server 2025 (Server Core installation): 10.0.26100.0 < 10.0.26100.33158 · Fixed: An authoritative update reference is available, but the fixed version is not recorded in the structured CVE fields. Check the linked vendor advisory for the applicable release.
- After
- Windows 11 Version 24H2: 10.0.26100.0 < 10.0.26100.8875; Windows 11 Version 25H2: 10.0.26200.0 < 10.0.26200.8875; Windows 11 version 26H1: 10.0.28000.0 < 10.0.28000.2525; Windows Server 2025: 10.0.26100.0 < 10.0.26100.33158; Windows Server 2025 (Server Core installation): 10.0.26100.0 < 10.0.26100.33158 · Fixed: 10.0.26100.33158:Security Update:https://support.microsoft.com/help/5099536
- Affected versionsThe structured affected or fixed version information changed.CNA ↗
- Before
- 10.0.26100.0 < 10.0.26100.8875; 10.0.26200.0 < 10.0.26200.8875; 10.0.28000.0 < 10.0.28000.2525; 10.0.26100.0 < 10.0.26100.33158 · Fixed: An authoritative update reference is available, but the fixed version is not recorded in the structured CVE fields. Check the linked vendor advisory for the applicable release.
- After
- Windows 11 Version 24H2: 10.0.26100.0 < 10.0.26100.8875; Windows 11 Version 25H2: 10.0.26200.0 < 10.0.26200.8875; Windows 11 version 26H1: 10.0.28000.0 < 10.0.28000.2525; Windows Server 2025: 10.0.26100.0 < 10.0.26100.33158; Windows Server 2025 (Server Core installation): 10.0.26100.0 < 10.0.26100.33158 · Fixed: An authoritative update reference is available, but the fixed version is not recorded in the structured CVE fields. Check the linked vendor advisory for the applicable release.
CVE published
Fixed release or patch reference recorded
Fixed release recorded from official guidance
Technical terms and abbreviations used in this report
- CVE
- Common Vulnerabilities and Exposures: the public identifier for one disclosed vulnerability.
- CVSS
- Common Vulnerability Scoring System: a technical severity framework; it is not patching priority by itself.
- EPSS
- Exploit Prediction Scoring System: FIRST's estimate of the probability that exploitation activity will be observed in the next 30 days; it is a forecast, not confirmation.
- CWE
- Common Weakness Enumeration: the standard category describing the underlying software or hardware weakness.
- CNA
- CVE Numbering Authority: an organisation authorised to assign and publish CVE records.
- CISA ADP
- Cybersecurity and Infrastructure Security Agency Authorized Data Publisher: structured enrichment added to a CVE record.
- NVD
- National Vulnerability Database: NIST's enrichment service for CVE records.
- CERT / CSIRT
- A computer security incident response team that publishes warnings or coordinates incident response.
- PoC
- Proof of concept: public material that demonstrates or helps reproduce exploitation.
- CSAF
- Common Security Advisory Framework: a machine-readable format for security advisories.
- LoTL
- Living off the land: abuse of legitimate tools or system functions during an attack.