critical severityConfidence mediumHistorical record

Next.js unauth RCE in image optimization on Windows servers

Direct answer

Next.js unauth RCE in image optimization on Windows servers, also tracked as CVE-2026-75604 / Next.js image optimization RCE is a critical-severity threat campaign HOL Guard tracked from Aug 25, 2026 to Aug 25, 2026, verified against 3 primary sources and last reviewed Sep 20, 2026. Active tracking has ended and the record remains published as a permanent historical research record.

Next.js image optimization on affected configurations (including Windows servers) can allow unauthenticated remote code execution. Upgrade to patched releases.

Also tracked as CVE-2026-75604 · Next.js image optimization RCE

First observed
Aug 25, 2026
Last observed
Aug 25, 2026
Last reviewed
Sep 20, 2026
Tracking ended
Aug 25, 2026

Record exports

JSON recordArtifact CSVSTIX 2.1 bundle

Uncertainty and limitations

Read the evidence limits before acting on this record.

Confirm exact fixed Next.js versions and whether your deployment uses the vulnerable image optimization path.

  • Exact fixed versions must come from the vendor advisory.
  • HOL blog is operator guidance.

Guard coverage and policy

What Guard's reviewed assertions do and do not claim for this campaign, and the reviewed starting points for defense.

No Guard coverage mapping or campaign-specific policy guidance is published for this record.

Safe next step. Campaign guidance is defensive context. It does not auto-apply policy or claim universal campaign coverage.

Open policy controlsCampaign-specific emergency policy starting point

Timeline

Reviewed events, oldest first, each tied to a verified source.

  1. Disclosure

    CVE-2026-75604 Next.js unauth RCE via image optimization disclosed.

    Sources:NVD CVE-2026-75604·CVE Record

  2. Update

    HOL Guard published operator coverage.

    Source:HOL Guard operator write-up

Publication clock: 643.0 hours from reviewed disclosure timestamp to HOL publication; 12-hour critical target; historical backfill outside target.

Reviewed artifacts

The specific artifacts this record concerns, as reviewed. Names and versions are shown as text; a registry link is not recorded here.

  • nextnpmpackage

Sources

Every claim on this record is traceable to the sources below.

Campaign questions, answered

js image optimization on affected configurations (including Windows servers) can allow unauthenticated remote code execution. Upgrade to patched releases. HOL Guard tracked the campaign from Aug 25, 2026 to Aug 25, 2026.

No. Active tracking ended Aug 25, 2026; this page remains as a labeled historical research record and does not imply the threat is currently active.

The record cites 3 primary sources, names 1 reviewed artifact, and was last fully reviewed Sep 20, 2026 by HOL Guard Security Publishing. Its uncertainty and limitations are stated on the record itself.

Campaign guidance is defensive context. It does not auto-apply policy or claim universal campaign coverage.

The permalink above is permanent. The full record can be downloaded from this page as JSON, an artifact CSV, and a STIX 2.1 bundle, and corrections can be requested through the published correction path on the record. Confirm exact fixed Next.js versions and whether your deployment uses the vulnerable image optimization path.

Reviewed in full by HOL Guard Security Publishing.

Published
Last full review
Last modified

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Record HGTC-2026-E6F338CC