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CVE-2026-103577 Details
Description
Insecure default variable initialization in Microsoft QUIC allows an unauthorized attacker to bypass a security feature over a network.
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
CISA-ADP
Assessed Oct 13, 2026Exploitation: NoneAutomatable: NoTechnical Impact: Partial
References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-103577 | [email protected] | PatchVendor Advisory |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-453 | Insecure Default Variable Initialization | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| microsoft windows 11 23h2 | < 10.0.22631.7652 |
CPE
Remediation
| |
| microsoft windows 11 24h2 | < 10.0.26100.9711 |
CPE
Remediation
| |
| microsoft windows 11 25h2 | < 10.0.26200.9711 |
CPE
Remediation
| |
| microsoft windows 11 26h1 | < 10.0.28000.3231 |
CPE
Remediation
| |
| microsoft windows 11 26h2 | < 10.0.26300.9711 |
CPE
Remediation
| |
| microsoft windows server 2022 | < 10.0.20348.5761 |
CPE
Remediation
| |
| microsoft windows server 2025 | < 10.0.26100.33650 |
CPE
Remediation
| |
Change History
3 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Oct 27, 2026 | Initial Analysis | [email protected] |
| Oct 13, 2026 | CVE Modified | CISA-ADP |
| Oct 13, 2026 | New CVE Received | [email protected] |