CVE-2026-21218

HIGH EPSS 58.9%
Published Feb 10, 20264mo ago · Modified Feb 12, 20264mo ago
7.5 CVSS 3.1
High
Find Similar
Published Feb 10, 2026 4mo ago
Last Modified Feb 12, 2026 4mo ago

Description

Improper handling of missing special element in .NET allows an unauthorized attacker to perform spoofing over a network.

CVSS Details

Base Score
7.5
Exploitability
3.9
Impact
3.6
Vector string
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality None
Integrity High
Availability None

Threat Intelligence

EPSS Exploit Probability
58.9% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available

Weaknesses 1

CWE-166

Affected Products 6

VendorProductVersionRange
microsoft.net*≥8.0.0  –  <8.0.24
microsoft.net*≥9.0.0  –  <9.0.13
microsoft.net*≥10.0.0  –  <10.0.3
applemacos*any
linuxlinux_kernel*any
microsoftwindows*any

References 1

  • msrc.microsoft.com https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-21218
    Vendor Advisory

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.