What is CVE-2025-55247?

CVE-2025-55247 is a high-severity vulnerability in Microsoft .Net 8.0, classified under Improper Link Resolution Before File Access. CVSS score: 7.3/10. Published 2025-10-14.

How severe is CVE-2025-55247?

High severity. CVSS v3 base score is 7.3 out of 10.

Vulnerability in Microsoft .Net 8.0

CVE-2025-55247

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

EPSS: 0.000 (4.2th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.3 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C.

Affected products

Microsoft .Net 8.0 — versions 8.0.0
Microsoft .Net 9.0 — versions 9.0.0

Weakness classification (CWE)

CWE-59 — Improper Link Resolution Before File Access

References

.NET Elevation of Privilege Vulnerability (vendor-advisory, patch)

Frequently asked questions

What is CVE-2025-55247?: CVE-2025-55247 is a high-severity vulnerability in Microsoft .Net 8.0, classified under Improper Link Resolution Before File Access. CVSS score: 7.3/10. Published 2025-10-14.
How severe is CVE-2025-55247?: High severity. CVSS v3 base score is 7.3 out of 10.