7.5
High
CVE-2026-62898 Use after free in Microsoft QUIC allows an unauthorized attacker to disclose information over a network
Description
Use after free in Microsoft QUIC allows an unauthorized attacker to disclose information over a network.
Affected products and versions
| Product | Affected versions | Fixed in |
|---|---|---|
| .NET 10.0 10.0 | 10.0.0 → < 10.0.11 | 10.0.11 |
| .NET 8.0 8.0 | 8.0.0 → < 8.0.30 | 8.0.30 |
| .NET 9.0 9.0 | 9.0.0 → < 9.0.19 | 9.0.19 |
| Microsoft Visual Studio 2022 version 17.14 17.14 | 17.14.0 → < 17.14.38 | 17.14.38 |
| Microsoft Visual Studio 2026 version 18.8 18.0 | 18.0 → < 18.8.3 | 18.8.3 |
| .NET 10.0 runtime 10.0 | 10.0.0 → < 10.0.11 | 10.0.11 |
| .NET 8.0 runtime 8.0 | 8.0.0 → < 8.0.30 | 8.0.30 |
| .NET 9.0 runtime 9.0 | 9.0.0 → < 9.0.19 | 9.0.19 |
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