CVE-2026-75604
Next.js: Unauthenticated Remote Code Execution on windows-hosted servers
- Published
- Sep 1, 2026
- Updated
- Sep 4, 2026
- Assigning CNA
- GitHub_M
- Evidence observed
- Sep 1, 2026
Primary CVSS
nvd · CVSS 3.1
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:HLow · next 30 days
- Percentile
- 81.3%
- Model date
- Oct 13, 2026
EPSS is a statistical estimate, not a certainty or a measure of impact. Combine it with CVSS, KEV status, exposure and your environment.
Summary
Next.js is a React framework for building full-stack web applications. From 13.4.0 until 15.5.24 and 16.3.3, Next.js applications using Pages Router or App Router without Cache Components on Windows-hosted servers do not consistently escape backslashes in route segments before constructing incremental-cache paths. In packages/next/src/shared/lib/router/utils/escape-path-delimiters.ts and packages/next/src/server/lib/incremental-cache/file-system-cache.ts, a remote request can supply encoded Windows path separators that traverse outside the intended cache root and expose private build data, including the server-reference-manifest encryption key. Disclosure of that key can enable remote code execution in the affected application. This issue is fixed in versions 15.5.24 and 16.3.3.
Sources
modules/exploits/windows/http/nextjs_unauth_rce_cve_2026_75604.rb
Metasploit Framework modulesDeclared conditions
- platform: Windows($.exploit_windows/http/nextjs_unauth_rce_cve_2026_75604.platform)
- verification: check_declared($.exploit_windows/http/nextjs_unauth_rce_cve_2026_75604.check)
Responsible use
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