CVE-2026-45490
HIGHCVSS 7.8/10EPSS 0.27%
Last modified
CVE-2026-45490 is a high-severity vulnerability rated 7.8/10 on the CVSS scale. Improper authorization in .NET allows an authorized attacker to elevate privileges locally.. EPSS estimates a 0.27% chance of exploitation in the next 30 days.
Description
Improper authorization in .NET allows an authorized attacker to elevate privileges locally.
Metrics
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Microsoft | .Net | >= 8.0.0, < 8.0.28 |
| Microsoft | .Net | >= 9.0.0, < 9.0.17 |
| Microsoft | .Net | >= 10.0.0, < 10.0.9 |
References
Timeline
- Published
- Last Modified
- Status
- Analyzed
Frequently Asked Questions
What is CVE-2026-45490?
Improper authorization in .NET allows an authorized attacker to elevate privileges locally.
How severe is CVE-2026-45490?
CVE-2026-45490 has a CVSS score of 7.8/10 (HIGH severity). The EPSS model estimates a 0.27% probability of exploitation in the next 30 days.
How do I fix CVE-2026-45490?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
Are you affected by CVE-2026-45490?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST