CVE-2026-69304

MEDIUM
MEDIUM Priority: 0.05 BB Relevance: 62/100
Published: 2026-09-08 Modified: 2026-10-30 First seen: 2026-10-30 Status: active

Attack Surface

Network No Auth No Interaction

CVSS Vector Breakdown

AV: Network
AC: High
PR: None
UI: None
S: Unchanged
C: None
I: None
A: High

Description

Improper handling of highly compressed data (data amplification) in ASP.NET Core allows an unauthorized attacker to deny service over a network.

Affected Software (14)

VendorProductVersion
Microsoft .NET 10.0 runtime 10.0.0 < 10.0.12
Microsoft .NET 8.0 runtime 8.0.0 < 8.0.31
Microsoft .NET 9.0 runtime 9.0.0 < 9.0.20
Microsoft ASP.NET Core 10.0 10.0 < 10.0.12
Microsoft ASP.NET Core 11.0 11.0 < 11.0 RC1
Microsoft ASP.NET Core 8.0 8.0 < 8.0.31
Microsoft ASP.NET Core 9.0 9.0 < 9.0.20
Microsoft Microsoft Visual Studio 2022 version 17.14 17.14.0 < 17.14.40
Microsoft Microsoft Visual Studio 2026 version 18.9 18.9.0 < 18.9.3
microsoft .net 8.0.0 – 8.0.31
microsoft asp.net_core 8.0.0 – 8.0.28
microsoft asp.net_core 11.0
microsoft visual_studio_2022 17.14.0 – 17.14.40
microsoft visual_studio_2026 18.9.0 – 18.9.3

References & Advisories (1)

Bug Bounty Relevance

62 / 100
✓ Network accessible
✓ No authentication
✓ No user interaction

CVSS Score

5.9 / 10.0 v3.1
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS — Exploitation Probability

0.85%
Raw Score 0.008550
Percentile 58.3%
Date 2026-10-30

Intelligence Sources

mitre ref →
nvd ref →