CVE-2026-69304
ASP.NET Core Denial of Service Vulnerability
MEDIUM
5.9
CVSS Score
Published: September 8, 2026 at 05:17 PM UTC
Updated: October 14, 2026 at 11:13 PM UTC
5 products affected across 1 vendorVisual Studio 2022.netASP.NET Core
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Severity
MEDIUM5.9
Exploit prediction
EPSS 0.9%
SSVC
No known exploit
Description
Improper handling of highly compressed data (data amplification) in ASP.NET Core allows an unauthorized attacker to deny service over a network.
Affected
Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.
v > 11.0.010.0 ≤ v < 10.0.1210.0.0 ≤ v < 10.0.911.0 ≤ v < 11.0 RC18.0 ≤ v < 8.0.318.0.0 ≤ v < 8.0.289.0 ≤ v < 9.0.209.0.0 ≤ v < 9.0.1710.011.011.0 rc18.09.0
Affected range stops below 10.0.12, so it looks safe — our inference, not a vendor statement
Affected range stops below 10.0.9, so it looks safe — our inference, not a vendor statement
Affected range stops below 11.0 RC1, so it looks safe — our inference, not a vendor statement
Affected range stops below 8.0.28, so it looks safe — our inference, not a vendor statement
Affected range stops below 8.0.31, so it looks safe — our inference, not a vendor statement
Affected range stops below 9.0.17, so it looks safe — our inference, not a vendor statement
Affected range stops below 9.0.20, so it looks safe — our inference, not a vendor statement
Affected range stops below 10.0.12, so it looks safe — our inference, not a vendor statement
Affected range stops below 8.0.31, so it looks safe — our inference, not a vendor statement
Affected range stops below 9.0.20, so it looks safe — our inference, not a vendor statement
microsoft-windows (environment)
17.14.0 ≤ v < 17.14.4017.14.0
Affected range stops below 17.14.40, so it looks safe — our inference, not a vendor statement
18.9.0 ≤ v < 18.9.318.9.0
Affected range stops below 18.9.3, so it looks safe — our inference, not a vendor statement
Windows· Microsoftdevice
80%All versions
Remediation
No guide yetNo remediation guidance has been written for this CVE yet. What the record does show:
Patch and advisory references
References (1)
Vendor AdvisoryPatch
Source: cverecord
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-69304SSVC — Action Prioritization
SSVCNo known exploitNot automatablePartial impact
SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.
CVSS
- Attack Vector
- NETWORK
- Complexity
- HIGH
- Privileges
- NONE
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality
- NONE
- Integrity
- NONE
- Availability
- HIGH
Vector?
Quick Info
StatusANALYZED
CWE
CWE-409
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