CVE-2025-13708

Code execution via unrestricted PyTorch checkpoint loading

Published Dec 23, 2025 · Updated Dec 23, 2025

Deserialization in Tencent NeuralClassifier Current allows context-dependent attackers to execute arbitrary code through a malicious checkpoint file. The _load_checkpoint function passes the file directly to torch.load without weights_only=True, permitting embedded Python objects to execute during loading. Execution requires a user to open the crafted checkpoint through the prediction workflow; payloads run with the application's privileges, reported as root on affected installations.

CVSS severity7.8
High
EPSS probability0.50%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Deserialization in Tencent NeuralClassifier Current allows context-dependent attackers to execute arbitrary code through a malicious checkpoint file. The _load_checkpoint function passes the file directly to torch.load without weights_only=True, permitting embedded Python objects to execute during loading. Execution requires a user to open the crafted checkpoint through the prediction workflow; payloads run with the application's privileges, reported as root on affected installations.

The record

CVE
CVE-2025-13708
Published
Dec 23, 2025
Updated
Dec 23, 2025
Vendor
Tencent
Product
NeuralClassifier
Classifications
CWE-502, T1203
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Dec 23, 2025CVE publishedPublication date reported by the CVE source.
  2. Dec 23, 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=Current

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

Tencent · NeuralClassifierversion=Current

Published CVSS scores

7.8Zero Day InitiativeCVSS:3.0/AV:L/AC:L/PR:N/UI:R/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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-502Deserialization of Untrusted Data
T1203Exploitation for Client Execution

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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