Symlink Attack Affecting microsoft.build package, versions [17.8.0,17.8.43)[17.10.0,17.10.46)[17.11.0,17.11.48)[17.12.0,17.12.50)[17.14.0,17.14.28)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-DOTNET-MICROSOFTBUILD-13561212
- published16 Oct 2025
- disclosed14 Oct 2025
- creditUnknown
Introduced: 14 Oct 2025
CVE-2025-55247 (opens in a new tab)How to fix?
Upgrade Microsoft.Build to version 17.8.43, 17.10.46, 17.11.48, 17.12.50, 17.14.28 or higher.
Overview
Affected versions of this package are vulnerable to Symlink Attack via improper handling of symbolic links before file access. An attacker can gain elevated privileges by exploiting the way the system resolves links, potentially accessing or modifying files with higher permissions.