CVE-2025-54950Network attack vector

Runtime crash via unchecked primitive argument stacks

Published Aug 7, 2025 · Updated Aug 12, 2025

Out-of-bounds access in Meta Platforms ExecuTorch before 0.7.0 allows remote attackers to crash the runtime via a crafted model. Primitive kernels index argument stacks without first verifying the expected element count, so malformed model instructions can access entries outside the stack span. A deployment must accept and load an attacker-controlled model; Meta reports potential code execution but provides no demonstrated execution path.

CVSS severity9.8
Critical
EPSS probability0.60%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Out-of-bounds access in Meta Platforms ExecuTorch before 0.7.0 allows remote attackers to crash the runtime via a crafted model. Primitive kernels index argument stacks without first verifying the expected element count, so malformed model instructions can access entries outside the stack span. A deployment must accept and load an attacker-controlled model; Meta reports potential code execution but provides no demonstrated execution path.

The record

CVE
CVE-2025-54950
Published
Aug 7, 2025
Updated
Aug 12, 2025
Vendor
Meta Platforms, Inc.
Product
ExecuTorch
Classifications
CWE-125
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 7, 2025CVE publishedPublication date reported by the CVE source.
  2. Aug 12, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <https://github.com/pytorch/executorch/commit/b6b7a16df5e7852d976d8c34c8a7e9a1b6f7d005

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Meta Platforms, Inc. · ExecuTorchversion=0 <https://github.com/pytorch/executorch/commit/b6b7a16df5e7852d976d8c34c8a7e9a1b6f7d005

Published CVSS scores

9.8GitHubCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
9.8CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-125Out-of-bounds Read

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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