CVE-2025-67747Public exploit

Arbitrary code execution via unsafe-import blocklist bypass

Published Dec 16, 2025 · Updated Dec 16, 2025

Static-analysis bypass in Trail of Bits Fickling before 0.1.6 allows attackers to trigger arbitrary code execution via a crafted pickle file. The unsafe_imports method omits marshal and types from its disallowed-module list, so calls through marshal.loads and types.FunctionType are rated likely safe. Execution requires a user or automated workflow to trust Fickling's result and then deserialize the attacker-controlled file; analysis alone does not run the payload.

CVSS severity7.8
High
EPSS probability0.28%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Static-analysis bypass in Trail of Bits Fickling before 0.1.6 allows attackers to trigger arbitrary code execution via a crafted pickle file. The unsafe_imports method omits marshal and types from its disallowed-module list, so calls through marshal.loads and types.FunctionType are rated likely safe. Execution requires a user or automated workflow to trust Fickling's result and then deserialize the attacker-controlled file; analysis alone does not run the payload.

The record

CVE
CVE-2025-67747
Published
Dec 16, 2025
Updated
Dec 16, 2025
Vendor
Trail of Bits
Product
Fickling
Classifications
CWE-184, CWE-502, T1204.002
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Dec 16, 2025CVE publishedPublication date reported by the CVE source.
  2. Dec 16, 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=< 0.1.6

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

Trail of Bits · Ficklingversion=< 0.1.6

Published CVSS scores

7.1GitHub, Inc.CVSS: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:P
7.8NIST NVDCVSS:3.1/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.

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)
Vectorlocal
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-184Incomplete List of Disallowed Inputs
CWE-502Deserialization of Untrusted Data
T1204.002User Execution: Malicious File

Public exploit references

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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