CVE-2025-71364
Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.
NVD · uneditedpicklescan before 0.0.30 fails to detect the asyncio.unix_events._UnixSubprocessTransport._start function in pickle reduce methods, allowing remote code execution. Attackers can craft malicious pickle files embedding this built-in function that evade detection but execute arbitrary commands when loaded.
Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.
dbcve analysis · high confidencepicklescan before version 0.0.30 fails to detect the asyncio.unix_events._UnixSubprocessTransport._start function when embedded in pickle reduce methods, allowing malicious pickle files to evade detection and achieve remote code execution upon deserialization.
Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.
CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.
From the vector- Attack vector
- Network
- Complexity
- Low
- Privileges
- None
- User interaction
- Required
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- None
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N
Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.
dbcve checksWork through these to decide whether this CVE applies to you.
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Check installed picklescan versionRun `pip show picklescan` or `pip list | grep picklescan` to see the installed version numberAffected if Version is below 0.0.30 (e.g., 0.0.29, 0.0.28, etc.)
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Confirm picklescan is used in your workflowIdentify whether your system or application uses picklescan to scan pickle files, particularly those from untrusted sourcesAffected if Picklescan is actively used to validate pickle files and the version is vulnerable
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Determine pickle file processing contextReview whether your environment deserializes pickle files from user input, network sources, or other untrusted origins that would be scanned by picklescanAffected if Untrusted pickle files are processed and relied upon picklescan for security validation
You are affected if picklescan version is below 0.0.30 and you use it to scan pickle files from untrusted sources.
Generated from the published advisory. Verify against your own configuration.
Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.
dbcve · scopedUpgrade picklescan to version 0.0.30 or later to include detection for this evasion technique, and avoid processing untrusted pickle files with vulnerable versions.
picklescan version 0.0.30 or later
- Check the current installed version of picklescan using: pip show picklescan or pip list | grep picklescan
- Upgrade picklescan to version 0.0.30 or later using: pip install picklescan>=0.0.30
- Verify the upgrade was successful by running: pip show picklescan
Generated from the published advisory — verify against the referenced sources before acting.
- Consultation2.0 h
- Implementation4.0 h
- Testing2.0 h
- Review / QA1.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2025-71364 — or any other known-vulnerable package — straight from your lock files. Free and open source; it runs locally and uploads nothing.
References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.
Primary sourcesPractitioner notes
ContributedPeer-ranked notes from engineers who’ve handled CVE-2025-71364 in production — separate from our analysis above.
The advisory tells you what broke. It rarely tells you what actually worked. If you’ve dealt with this one, that detail is what the next engineer is searching for.
- The version that genuinely resolved it — not the one the vendor claimed
- A config change or rule that shut the vector down
- A gotcha in the upgrade path that cost you an afternoon
No notes yet
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- Verified mitigations, workarounds, and config changes
- Version or environment caveats, and links to real fixes
- No weaponised exploit code, or anything meant to cause harm
- No spam, self-promotion, credentials, or personal data