CVE-2025-54951Network attack vector

Code execution via unchecked serialized tensor rank

Published Aug 7, 2025 · Updated Aug 12, 2025

Heap-based buffer overflows in ExecuTorch before 0.7.0 allow remote attackers to crash the runtime or execute code through a crafted model. The ATen and portable parseTensor paths accept a serialized sizes vector whose rank exceeds kTensorDimensionLimit, then continue parsing tensor metadata without enforcing that limit. The flaw is reached only when an application loads an attacker-controlled model, and its effects remain within the process running that model.

CVSS severity9.8
Critical
EPSS probability0.67%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Heap-based buffer overflows in ExecuTorch before 0.7.0 allow remote attackers to crash the runtime or execute code through a crafted model. The ATen and portable parseTensor paths accept a serialized sizes vector whose rank exceeds kTensorDimensionLimit, then continue parsing tensor metadata without enforcing that limit. The flaw is reached only when an application loads an attacker-controlled model, and its effects remain within the process running that model.

The record

CVE
CVE-2025-54951
Published
Aug 7, 2025
Updated
Aug 12, 2025
Vendor
Meta Platforms, Inc.
Product
ExecuTorch
Classifications
CWE-122, T1203
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/cea9b23aa8ff78aff92829a466da97461cc7930c

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Meta Platforms, Inc. · ExecuTorchversion=0 <https://github.com/pytorch/executorch/commit/cea9b23aa8ff78aff92829a466da97461cc7930c

Published CVSS scores

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.

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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-122Heap-based Buffer Overflow
T1203Exploitation for Client Execution

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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