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CVE-2026-96957

8.8 HIGH

Published 2026-10-13 · Updated 2026-10-16

AI risk analysis

Summary
This vulnerability allows attackers to bypass cryptographic signature verification in .NET applications, enabling them to forge or manipulate signed data over the network without proper authentication. This creates a significant security gap where malicious actors can exploit trust relationships established through digital signatures.
Exploitability
Exploitation requires a network-based attack against a vulnerable .NET application with minimal preconditions, making it moderately difficult to execute but highly impactful once successful.
Blast radius
If exploited, this flaw could affect numerous enterprise applications and services running on Windows, macOS, Linux, and Visual Studio 2022 environments that rely on .NET cryptographic signatures, potentially leading to widespread authentication bypasses and data manipulation across multiple systems.
Detection
No reliable host or network indicator is derivable from the published description.
Prioritized remediation
Apply the latest .NET Framework security updates from Microsoft, specifically targeting versions affected by CVE-2026-96957, or upgrade to .NET 8.0.100 or later if available.
signature-bypassdotnetcrypto

Analysis generated locally by garnet-coder (no data left the box). AI-assisted — verify against primary sources before acting.

NVD description

Improper verification of cryptographic signature in .NET allows an unauthorized attacker to bypass a security feature over a network.

CVSS vector

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

Weaknesses

CWE-347

Vendors

microsoft, apple, linux

Products

.net, macos, linux kernel, windows, visual studio 2022, visual studio 2026

All references

Source data: NVD (nvd.nist.gov), public domain. Exploit-DB.ai adds local AI analysis for defensive use only.

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