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Response snapshot Nov 4, 2026, 04:16 UTC

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VulnerabilityCVE-2026-24747

PyTorch Vulnerable to Remote Code Execution via Untrusted Checkpoint Files

A vulnerability in PyTorch's weights_only unpickler allows an attacker to craft a malicious checkpoint file (.pth) that, when loaded with torch.load(..., weights_only=True), can corrupt memory and potentially lead to arbitrary code execution.

At a glance

Exploited
Not known
Severity
8.8 High (CVSS 3.1)
Chance of exploitation
Not estimated
Sources
1 source

What to do

GitHub lists first patched versions: torch: 2.10.0. Confirm the affected range and upgrade guidance in the exact advisory.

Read GitHub-reviewed advisory GHSA-63cw-57p8-fm3p (opens a new tab)

What happened

Summary

A vulnerability in PyTorch's weights_only unpickler allows an attacker to craft a malicious checkpoint file (.pth) that, when loaded with torch.load(..., weights_only=True), can corrupt memory and potentially lead to arbitrary code execution.

Vulnerability Details

The weights_only=True unpickler failed to properly validate pickle opcodes and storage metadata, allowing:

Continue reading

1. Heap memory corruption via SETITEM/SETITEMS opcodes applied to non-dictionary types 2. Storage size mismatch between declared element count and actual data in the archive

Impact

An attacker who can convince a user to load a malicious checkpoint file may achieve arbitrary code execution in the context of the victim's process.

Credit

Ji'an Zhou

Affected package ranges reported by GitHub: torch: < 2.10.0

Scores and how they were measured

CVSS base severity

8.8

Version 3.1As of

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Measurement source (opens a new tab)

How bad it is if exploited. Not a prediction of exploitation or proof you are exposed.

EPSS probability

Not available

A model's estimate of exploitation in the next 30 days, not certainty or your own risk.

Related technology

Sources

  1. Primary source

    GitHub-reviewed advisory GHSA-63cw-57p8-fm3p (opens a new tab)

    The public advisory supplies the description, affected package/version ranges, and any listed CVSS metric. GitHub review is not local review.

    Published Checked

  2. Primary source

    GitHub public advisory API page (opens a new tab)

    The API page supplied GHSA-63cw-57p8-fm3p, its actual identifiers, source dates, and structured metrics.

    Published Date not suppliedChecked

Cite this record

For factual claims, cite the primary sources above; cite KEVWire for its compilation, dates, and classifications.

APA

KEVWire. (2026, November 4). PyTorch Vulnerable to Remote Code Execution via Untrusted Checkpoint Files (CVE-2026-24747). https://kevwire.com/record/CVE-2026-24747

MLA

"PyTorch Vulnerable to Remote Code Execution via Untrusted Checkpoint Files (CVE-2026-24747)." KEVWire, 4 Nov. 2026, kevwire.com/record/CVE-2026-24747.

Chicago

KEVWire. "PyTorch Vulnerable to Remote Code Execution via Untrusted Checkpoint Files (CVE-2026-24747)." Last modified November 4, 2026. https://kevwire.com/record/CVE-2026-24747.

Evidence summary (plain text)

PyTorch Vulnerable to Remote Code Execution via Untrusted Checkpoint Files (Jan 27, 2026).
A vulnerability in PyTorch's weights_only unpickler allows an attacker to craft a malicious checkpoint file (.pth) that, when loaded with torch.load(..., weights_only=True), can corrupt memory and potentially lead to arbitrary code execution.

The weights_only=True unpickler failed to properly validate pickle opcodes and storage metadata, allowing:

1. Heap memory corruption via SETITEM/SETITEMS opcodes applied to non-dictionary types
2.
CVSS 8.8 (version 3.1; evidence as of Nov 4, 2026; https://github.com/advisories/GHSA-63cw-57p8-fm3p).
Sources:
GitHub-reviewed advisory GHSA-63cw-57p8-fm3p: https://github.com/advisories/GHSA-63cw-57p8-fm3p
GitHub public advisory API page: https://api.github.com/advisories?type=reviewed&per_page=100&sort=updated&direction=desc
Record ID: CVE-2026-24747.
Record origin: Ingested record.
AI evidence: Not assessed.
Known exploitation: Not assessed.
Zero-day status: Not assessed. KEV membership alone does not establish zero-day status.
About this data

This record was ingested from a data source. Retrieved: Nov 4, 2026, 04:15 UTC. Ingestion is not an independent editorial investigation.

A CISA KEV listing documents known exploitation, not necessarily a zero-day; absence from the catalog does not prove a vulnerability has never been exploited.

Technology tags indicate possible relevance, not verified exposure. Confirm the affected product, version, and configuration against your own inventory; KEVWire does not scan your systems.

A personal reading checklist on this device, not verified remediation.

Record JSON

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Record details

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