CVE-2026-70179
ASP.NET Core Elevation of Privilege Vulnerability
No known exploitation. No EPSS score yet. Fixed versions are out.
What to do
Find your product and version, then upgrade to the build on the right.
- Microsoft Visual Studio 2022 version 17.14Affected: ≥ 17.14.0, < 17.14.42Upgrade to: 17.14.42Stated by: CVE record
- Microsoft Visual Studio 2026 version 18.10Affected: ≥ 18.10.0, < 18.10.4Upgrade to: 18.10.4Stated by: CVE record
- Microsoft.AspNetCore.Authentication.NegotiateAffected: ≥ 10.0.0, < 10.0.13Upgrade to: 10.0.13Stated by: CVE record
Versions as the sources state them. Full version matrix after sign-in
What it is
From the CVE record
Authentication bypass by spoofing in ASP.NET Core allows an authorized attacker to elevate privileges over a network.
In plain language
No plain-language summary for this CVE yet.
Exploitation
Where each signal puts this CVE on the scale from published to confirmed exploited.
- CISA KEV
Not in the catalog. CISA has not confirmed exploitation.
- Public exploits
No public exploit or proof of concept found in the sources we track.
- EPSS
No EPSS score yet. New CVEs are usually scored within a few days.
Lifecycle
5 events over 0 days, from the signal feeds we watch.
- Publishedweakness classified, att&ck mapped, record updated, record updated
Affected products
Technical detail
CVSS 3.1 vector
Open in the CVSS calculatorCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Scored 7.5 by NVD.
How it is reached
- Attack Vector NetworkExploitable remotely over the network without any special conditions
- Attack Complexity HighRequires specific conditions like a race condition or non-default configuration
- Privileges Required LowRequires basic user-level privileges
- User Interaction NoneNo user interaction needed — fully automated exploitation
Scope
- Scope UnchangedImpact is limited to the vulnerable component itself
Impact if exploited
- Confidentiality HighTotal information disclosure — all data in the component is compromised
- Integrity HighTotal loss of integrity — attacker can modify any data in the component
- Availability HighTotal denial of service — the component is completely unavailable
Weaknesses
ATT&CK techniques
Mapped from the weaknesses above (CWE to ATT&CK), not observed in attacks.
- Initial AccessT1078Valid Accountsmedium confidence
Sources
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