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.netApplication · Microsoft

CVE-2024-26190

HIGH · 7.5 CVSS v3.1 Developing Published 2024-03-12
Fix available
A fix is available. Upgrade to 7.0.17 / 7.3.12 or later.
See remediation →
84/100
Remediation priority · High
Remotely reachable No privileges Zero-click

Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.

NVD · unedited
Microsoft QUIC Denial of Service Vulnerability

Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.

dbcve analysis · low confidence
Developing — this CVE was published recently and its authoritative NVD entry is still being established, so we're holding a technical summary until the source data settles rather than publish something unreliable. Re-checking after 2026-08-01.

Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.

NVD · CPE data
.netApplication
Affected:>= 7.0.0, < 7.0.17>= 8.0.0, < 8.0.3
PowershellApplication
Affected:>= 7.3, < 7.3.12>= 7.4, < 7.4.2
Visual Studio 2022Application
Affected:>= 17.4.0, < 17.4.17>= 17.6.0, < 17.6.13>= 17.8.0, < 17.8.8>= 17.9.0, < 17.9.3
Windows 11 21h2Operating system
Affected:< 10.0.22000.2836
Windows 11 22h2Operating system
Affected:< 10.0.22621.3296
Windows 11 23h2Operating system
Affected:< 10.0.22631.3296
Windows Server 2022Operating system
Affected:< 10.0.20348.2340
Windows Server 2022 23h2Operating system
Affected:< 10.0.25398.763

CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.

From the vector
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.

dbcve · scoped
Upgrade available Upgrade to 7.0.17 / 7.3.12 / 7.4.2 or later
Fixed in 7.0.177.3.127.4.2
Recommended fix High confidence

Microsoft QUIC: .NET 7.0.17/8.0.3, PowerShell 7.3.12/7.4.2, VS2022 17.4.17/17.6.13/17.8.8/17.9.3, Windows 11/Server builds as listed (KB5002537)

  1. For .NET: Upgrade to .NET 7.0.17 or later, or .NET 8.0.3 or later depending on your major version
  2. For PowerShell: Upgrade to PowerShell 7.3.12 or later, or PowerShell 7.4.2 or later depending on your minor version
  3. For Visual Studio 2022: Update to version 17.4.17, 17.6.13, 17.8.8, or 17.9.3 (or later) depending on your current minor version
  4. For Windows 11 21h2: Install update KB5002537 (build 10.0.22000.2836) or later
  5. For Windows 11 22h2: Install update KB5002537 (build 10.0.22621.3296) or later
  6. For Windows 11 23h2: Install update KB5002537 (build 10.0.22631.3296) or later
  7. For Windows Server 2022: Install update KB5002537 (build 10.0.20348.2340) or later
  8. For Windows Server 2022 23h2: Install update KB5002537 (build 10.0.25398.763) or later
Caveat Minor update rolls; review Microsoft release notes for any behavior changes in QUIC implementation

Generated from the published advisory — verify against the referenced sources before acting.

We can perform the upgrade in your staging environment and verify nothing breaks — typical engagement from $1,950. Get the upgrade done

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References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.

Primary sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2024-26190 in production — separate from our analysis above.

No notes yet

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What this is

A place for practitioners to share what actually worked: a mitigation you’ve tested, a configuration change, a version- or environment-specific caveat, or a link to a verified patch. The most useful notes rise to the top as peers upvote them, so the signal stays high.

What belongs here
  • Verified mitigations, workarounds, and config changes
  • Version or environment caveats, and links to real fixes
  • No weaponised exploit code, or anything meant to cause harm
  • No spam, self-promotion, credentials, or personal data