7.3High

CVE-2025-55247.NET Elevation of Privilege Vulnerability

Microsoft .NET 8.0; Microsoft .NET 9.0 Published: 2025-10-14 20:00 (1 year ago)

Description

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

Weakness (CWE): CWE-59

Data: CVE.org, NVD, CISA KEV, FIRST EPSS, Ubuntu. Published as the sources state it, in English.

Affected products and versions

Vendor	Product	Versions
microsoft	.net	8.0.0 – < 8.0.21
Microsoft	.NET 8.0	8.0.0 – < 8.0.21
Microsoft	.NET 9.0	9.0.0 – < 9.0.10

References and patches

.NET Elevation of Privilege Vulnerability vendor-advisorypatchVendor Advisory

CPE matches (NVD) (2)

cpe:2.3:a:microsoft:.net:*:*:*:*:*:*:*:* ≥ 8.0.0 < 8.0.21
cpe:2.3:a:microsoft:.net:*:*:*:*:*:*:*:* ≥ 9.0.0 < 9.0.10

CVSS score

7.3High

Source: microsoft · CVSS 3.1

Attack vector: Local
Attack complexity: Low
Privileges required: Low
User interaction: Required
Scope: Unchanged
Confidentiality: High
Integrity: High
Availability: High

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

All scores (3)

cna	CVSS 3.1	7.3High
secure@microsoft.com	CVSS 3.1	7.3High
nvd	CVSS 3.1	7.3High

EPSS (chance of exploitation in 30 days)

0.62%

higher than 50% of all CVEs

CISA assessment (SSVC)

Exploitation: none
Automatable: no
Technical impact: total

Timeline

ID reserved2025-08-11
Published2025-10-14 20:00
Reached IP-DB2026-10-24 23:59
Last updated2026-10-19 00:10

Assigned by (CNA): microsoft
NVD status: Analyzed

View at source: CVE.org · NVD

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