CVE-2025-55247: .net from 8.0.0 (inclusive), before 8.0.21 (exclusive), from 9.0.0 (inclusive), before 9.0.10 (exclusive); +2 more…

CVE-2025-55247. CVSS 3.1 base score 7.3 (HIGH, NVD). EPSS 0.00608 (percentile 0.48037), scored 17-Oct-2026.

Affected technology

.net · from 8.0.0 (inclusive), before 8.0.21 (exclusive)
microsoft

.net · from 9.0.0 (inclusive), before 9.0.10 (exclusive)
microsoft

.NET 8.0 · 8.0.0 to before 8.0.21
Microsoft

.NET 9.0 · 9.0.0 to before 9.0.10
Microsoft

Description’s affected range: before file access ('link following') in .NET

Component: Not specified by the source

Attack conditions (Vendor/CNA, CVSS 3.1): Local · Low privileges required · User interaction required

Attack conditions (NVD, CVSS 3.1): Local · Low privileges required · User interaction required

What an attacker can do

An authorized attacker can elevate privileges locally. Vendor/CNA’s CVSS 3.1 assessment (base score 7.3/10) rates confidentiality, integrity and availability impact as high. NVD’s CVSS 3.1 assessment (base score 7.3/10) rates confidentiality, integrity and availability impact as high.

Published 18-Oct-2026 22:52 UTC

CWE: CWE-59
CCR priority: 29.4 /100 (P4)
CVSS 3.1: 7.3 /10 · CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H · NVD
EPSS: 0.00608 · percentile 0.48037 · 2026-10-17
KEV: no

Provenance

NVD CVE API 2.0 · Source record · observed 2026-10-18 22:50:08.248207+00:00 UTC

Stable permalink: https://cybercodered.org/item/cve-cve-2025-55247.html