CVE-2026-70179High· 7.5▾ TwilightAuthentication bypass by spoofing in ASP.NET Core allows an authorized attacker to elevate privileges over a network.
▾ Twilight zone — High severity, or a signal on a lesser flaw
impact 41.3 · likelihood 0.1 · exploitation 0
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Stakeholder-Specific Vulnerability Categorization from CISA's ADP record at CVE.org: whether exploitation is observed, whether an attack can be automated, and how much of the system is at stake.
Exploit-prediction probability, daily snapshots since Oct 15.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via NVD
Last analysed / modified upstream
0.6%
0.6% → 0.6%
Authentication bypass by spoofing in ASP.NET Core allows an authorized attacker to elevate privileges over a network.
Refer to the linked advisories for vendor-supplied fixes and affected version ranges.
Affected packages:
Microsoft.AspNetCore.Authentication.Negotiate >= 10.0.0, <= 10.0.12Microsoft.AspNetCore.Authentication.Negotiate >= 8.0.0, <= 8.0.31Microsoft.AspNetCore.Authentication.Negotiate >= 9.0.0, <= 9.0.20Patched in:
Microsoft.AspNetCore.Authentication.Negotiate 10.0.13Microsoft.AspNetCore.Authentication.Negotiate 8.0.32Microsoft.AspNetCore.Authentication.Negotiate 9.0.21Source: https://github.com/advisories/GHSA-vrrp-6v32-2p8g
Connected by shared product, vendor, weakness, or advisory.
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