SB2026060968 - Link following in Microsoft .NET
Published: June 9, 2026
Security Bulletin ID
SB2026060968
CSH Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Data manipulation
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Link following (CVE-ID: CVE-2026-45491)
CWE-ID: CWE-59 - Improper Link Resolution Before File Access ('Link Following')
CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear
The vulnerability allows a local attacker to compromise the system.
The vulnerability exists due to an insecure link following issue in .NET. A local attacker can perform tampering on the target system.
Remediation
Install update from vendor's website.