CVE-2026-75604

criticalpriority · track · 11EPSS 0.021 · 82 %ileexploit · weaponizedDENLRUUS
grimoire priorityP1 · Urgent
Exploitable?
Public exploit
6 exploits · weaponized
Likely / severe?
2.10% (82nd) EPSS
CVSS 9 · critical
Is it mine?
9 products
Check your exposure
Who says so?
4 sources
fstec_bdu · cert_bund · ncsc_nl · osv

EPSS · scored 2026-10-27

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.

01

cvss

Technical severity, 0–10. One row per scoring source.

9.0
010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · high–critical · 8.8–9

v3.19criticalAV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:Hsecondary · FSTEC (BDU) RU
v3.19criticalCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:Hsecondary · security-advisories@github.comexploitability 2.2 · impact 6
v3.19criticalCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:Hsecondary · OSV
v3.18.8highCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H/E:Fsecondary · CVSS-BT (t0sche)
02

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Exploitation: none · Automatable: no · Technical Impact: totalcoordinatorcisa_ssvcUS
03

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-22USCWE-22USCWE-22US
04

exploits (6)

Public proof-of-concept and weaponised exploit code.

05

affected products (9)

Products and version ranges known to be affected.

06

advisories (3)

Vendor and ecosystem advisories describing this.

  • NCSC-2026-0329Kwetsbaarheden verholpen in Next.jsNL2026-08-26csaf · ncsc_nlNL

    Vercel heeft twee kwetsbaarheden verholpen in Next.js, een React framework voor het ontwikkelen van (web)applicaties.

  • WID-SEC-W-2026-3027Vercel Next.js: Mehrere Schwachstellen ermöglichen CodeausführungDeutsch2026-08-25csaf · cert_bundDE

    Ein entfernter, anonymer Angreifer kann mehrere Schwachstellen in Vercel Next.js ausnutzen, um beliebigen Programmcode auszuführen.

  • GHSA-p293-qw3h-jr36Next.js: Unauthenticated Remote Code Execution on windows-hosted servers2026-09-08ghsa · osvUS

    ## Impact A vulnerability in applications using Pages and App router without Cache Component can lead to remote code execution when the server is hosted on machines using a Windows filesystem. ## Workaround There is no known workaround for affected windows-hosted applications. You should upgrade immediately if your server is hosted on Windows.

07

also known as (2)

Other names and identifiers for this entity.

08

sources

Which sources assert this record, and when.

fstec_bducert_bundncsc_nlosvNVDCVE.orgMITRE
published 2026-09-01modified 2026-10-13
09

references (5) nvd

External citations — patches, advisories, analysis.

scry

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