CVE-2025-54952

Code execution via overflowing allocation size

Published Aug 7, 2025 · Updated Aug 8, 2025

Integer overflow in Meta Platforms ExecuTorch 0.6.0 and earlier allows attackers to execute code by loading a crafted model. MemoryAllocator::allocateList multiplies the requested element count by sizeof(T) without checking for wraparound, then passes the undersized byte count to the allocator. Exploitation requires an application to load an attacker-controlled model and can execute code in that process or crash it.

CVSS severity9.8
Critical
EPSS probability0.59%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Integer overflow in Meta Platforms ExecuTorch 0.6.0 and earlier allows attackers to execute code by loading a crafted model. MemoryAllocator::allocateList multiplies the requested element count by sizeof(T) without checking for wraparound, then passes the undersized byte count to the allocator. Exploitation requires an application to load an attacker-controlled model and can execute code in that process or crash it.

The record

CVE
CVE-2025-54952
Published
Aug 7, 2025
Updated
Aug 8, 2025
Vendor
Meta Platforms, Inc.
Product
ExecuTorch
Classifications
CWE-680, T1204.002
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 7, 2025CVE publishedPublication date reported by the CVE source.
  2. Aug 8, 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/8f062d3f661e20bb19b24b767b9a9a46e8359f2b

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

Meta Platforms, Inc. · ExecuTorchversion=0 <https://github.com/pytorch/executorch/commit/8f062d3f661e20bb19b24b767b9a9a46e8359f2b

Published CVSS scores

5.9GitHubCVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U
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)
Vectorlocal
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-680Integer Overflow to Buffer Overflow
T1204.002Malicious File

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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