CVE-2026-58526: CWE-416: Use After Free in Microsoft Windows 10 Version 1809
Use after free in Windows Storage allows an authorized attacker to elevate privileges locally.
AI Analysis
Technical Summary
CVE-2026-58526 is a use-after-free vulnerability (CWE-416) in the Windows Storage component of Microsoft Windows 10 Version 1809 (build 10.0.17763.0). This vulnerability enables an authorized local attacker to elevate privileges on the affected system. The vulnerability has a high CVSS 3.1 base score of 7.0, reflecting high impact on confidentiality, integrity, and availability. Microsoft has released an official patch to address this issue, as documented in their security update guide.
Potential Impact
Successful exploitation of this vulnerability allows an authorized local attacker to elevate their privileges, potentially gaining higher system rights than intended. This can lead to full system compromise, including unauthorized access to sensitive data and disruption of system operations.
Mitigation Recommendations
An official fix is available from Microsoft. It is strongly recommended to apply the security update provided by Microsoft for Windows 10 Version 1809 (build 10.0.17763.0) to remediate this vulnerability. No additional mitigation steps are indicated beyond applying the official patch.
CVE-2026-58526: CWE-416: Use After Free in Microsoft Windows 10 Version 1809
Description
Use after free in Windows Storage allows an authorized attacker to elevate privileges locally.
CVSS v3.1
Score 7.0high
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-58526 is a use-after-free vulnerability (CWE-416) in the Windows Storage component of Microsoft Windows 10 Version 1809 (build 10.0.17763.0). This vulnerability enables an authorized local attacker to elevate privileges on the affected system. The vulnerability has a high CVSS 3.1 base score of 7.0, reflecting high impact on confidentiality, integrity, and availability. Microsoft has released an official patch to address this issue, as documented in their security update guide.
Potential Impact
Successful exploitation of this vulnerability allows an authorized local attacker to elevate their privileges, potentially gaining higher system rights than intended. This can lead to full system compromise, including unauthorized access to sensitive data and disruption of system operations.
Mitigation Recommendations
An official fix is available from Microsoft. It is strongly recommended to apply the security update provided by Microsoft for Windows 10 Version 1809 (build 10.0.17763.0) to remediate this vulnerability. No additional mitigation steps are indicated beyond applying the official patch.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2026-07-01T04:33:41.869Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-58526","vendor":"Microsoft"}]
Threat ID: 6a566f8368715ace43e6c031
Added to database: 07/14/2026, 17:18:59 UTC
Last enriched: 07/14/2026, 17:34:23 UTC
Last updated: 07/15/2026, 04:18:39 UTC
Views: 2
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