CVE-2026-85790
Analyzed
Analyzed - Analysis Complete
Use After Free in Microsoft QUIC Allows Information Disclosure
Vulnerability report for CVE-2026-85790, including description, CVSS score, EPSS score, affected products, exploitability, helpful resources, and attack-flow context.
Publication date: 2026-10-13
Last updated on: 2026-10-16
Assigner: Microsoft Corporation
Description
Description
Use after free in Microsoft QUIC allows an unauthorized attacker to disclose information over a network.
CVSS Scores
EPSS Scores
| Probability: | |
| Percentile: |
Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| microsoft | windows_11_23h2 | to 10.0.22631.7652 (exc) |
| microsoft | windows_11_23h2 | to 10.0.22631.7652 (exc) |
| microsoft | windows_11_24h2 | to 10.0.26100.9711 (exc) |
| microsoft | windows_11_24h2 | to 10.0.26100.9711 (exc) |
| microsoft | windows_11_25h2 | to 10.0.26200.9711 (exc) |
| microsoft | windows_11_25h2 | to 10.0.26200.9711 (exc) |
| microsoft | windows_11_26h1 | to 10.0.28000.3231 (exc) |
| microsoft | windows_11_26h1 | to 10.0.28000.3231 (exc) |
| microsoft | windows_11_26h2 | to 10.0.26300.9711 (exc) |
| microsoft | windows_11_26h2 | to 10.0.26300.9711 (exc) |
| microsoft | windows_server_2025 | to 10.0.26100.33650 (exc) |
| microsoft | windows_server_2022 | to 10.0.20348.5761 (exc) |
| microsoft | native.quic.msquic.schannel | to 2.6.2 (exc) |
| microsoft | visual_studio_2022 | From 17.14.0 (inc) to 17.14.42 (exc) |
| microsoft | visual_studio_2026 | From 18.10.0 (inc) to 18.10.4 (exc) |
Helpful Resources
Exploitability
CWE
KEV
| CWE ID | Description |
|---|---|
| CWE-416 | The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer. |
