CVE-2026-62898: CWE-416: Use After Free in Microsoft .NET 10.0
Use after free in Microsoft QUIC allows an unauthorized attacker to disclose information over a network.
AI Analysis
Technical Summary
This vulnerability (CVE-2026-62898) involves a use-after-free condition in Microsoft QUIC as implemented in .NET 10.0. Exploitation of this flaw could allow an unauthorized attacker to disclose sensitive information over a network. The vulnerability is classified under CWE-416 (Use After Free). Microsoft has published an official fix to remediate this issue.
Potential Impact
An attacker who successfully exploits this vulnerability can disclose sensitive information remotely without requiring privileges or user interaction. The confidentiality impact is high, while integrity and availability are not affected.
Mitigation Recommendations
An official fix is available from Microsoft. Users and administrators should apply the security update provided by Microsoft as detailed in the vendor advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-62898 to remediate this vulnerability.
CVE-2026-62898: CWE-416: Use After Free in Microsoft .NET 10.0
Description
Use after free in Microsoft QUIC allows an unauthorized attacker to disclose information over a network.
CVSS v3.1
Score 7.5high
Affected software
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Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CVE-2026-62898) involves a use-after-free condition in Microsoft QUIC as implemented in .NET 10.0. Exploitation of this flaw could allow an unauthorized attacker to disclose sensitive information over a network. The vulnerability is classified under CWE-416 (Use After Free). Microsoft has published an official fix to remediate this issue.
Potential Impact
An attacker who successfully exploits this vulnerability can disclose sensitive information remotely without requiring privileges or user interaction. The confidentiality impact is high, while integrity and availability are not affected.
Mitigation Recommendations
An official fix is available from Microsoft. Users and administrators should apply the security update provided by Microsoft as detailed in the vendor advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-62898 to remediate this vulnerability.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2026-07-14T21:25:21.035Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-62898","vendor":"Microsoft"}]
Threat ID: 6a7b5823bf8831d5391561ed
Added to database: 08/11/2026, 17:13:07 UTC
Last enriched: 08/11/2026, 20:57:52 UTC
Last updated: 08/12/2026, 01:41:19 UTC
Views: 6
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