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CVE-2026-70190: Improper link resolution before file access ('link following') in .NET allows an authorized attacker to elevat

40
This month
HIGH 7.3WATCHLIST

CVE-2026-70190 is a high-severity flaw (CVSS 7.3) affecting affected software. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Improper link resolution before file access ('link following') in .NET allows an authorized attacker to elevate privileges locally.

Why this priority

  • High severity
  • On your watchlist

A fixed release or distro patch exists.

Risk facts

CVSS score7.3 (High)
Attack vectorLocal
Attack complexityLow
Privileges neededLow
User interactionRequired
EPSS exploit chance0.5% (top 61%)
CISA exploited listNo
WeaknessCWE-59
Published2026-10-13
Last modified2026-10-22
Publisher (CNA): Microsoft Corporation

Last updated 2026-10-22 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Timeline

Exact fixes by distribution

Fedora 46 · retext · FIXED · 8.1.0-1.fc46 · FEDORA-2026-0602a84203 · source
sudo dnf upgrade --advisory=FEDORA-2026-0602a84203
Ubuntu 22.04 · dotnet6 · NOT AFFECTED
Ubuntu 22.04 · dotnet8 · NOT AFFECTED
Ubuntu 24.04 · dotnet8 · NOT AFFECTED
Ubuntu 24.04 · dotnet10 · NOT AFFECTED
Alpine 3.22 · dotnet9-runtime · FIXED · dotnet9-runtime-9.0.21-r0
apk add --upgrade dotnet9-runtime apk info -v dotnet9-runtime
Alpine 3.23 · dotnet10-runtime · FIXED · dotnet10-runtime-10.0.13-r0
apk add --upgrade dotnet10-runtime apk info -v dotnet10-runtime
Alpine 3.23 · dotnet9-runtime · FIXED · dotnet9-runtime-9.0.21-r0
apk add --upgrade dotnet9-runtime apk info -v dotnet9-runtime
Alpine 3.24 · dotnet10-runtime · FIXED · dotnet10-runtime-10.0.13-r0
apk add --upgrade dotnet10-runtime apk info -v dotnet10-runtime
Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-70190?

No fixed release is listed yet. Watch the vendor advisory and apply any mitigation shown on this page.

Is CVE-2026-70190 being exploited?

CVE-2026-70190 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-70190 affect?

CVE-2026-70190 affects affected software. Severity is high (CVSS 7.3). Improper link resolution before file access ('link following') in .NET allows an authorized attacker to elevate privileges locally.

How urgent is CVE-2026-70190?

Priority 40/100. High severity; On your watchlist

References

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