CVE-2025-71339

HIGHPre-NVD 8.18.1—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 8.1 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.5%, top 58% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, secondary
Elevated
8.1EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1%CVSS: 8.1Exploit: Elevated riskExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

Picklescan before 0.0.33 fails to detect the numpy.f2py.crackfortran._eval_length gadget in pickle __reduce__ methods, allowing arbitrary code execution. Attackers can craft malicious pickle files that execute arbitrary Python code when loaded by victims who trust Picklescan's safety validation.

CVSS v3
8.1
EG Score
8.1(medium)
EG Risk
52(Track*)
EG Risk 52/100SSVC: Track*

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity81% × 45%
Exploitation40% × 40%
Automatability0% × 15%
Action: Watch closely — could escalate to Attend.
EPSS PROB
1%
EPSS %ILE
43%
KEV
Not listed

Published

December 30, 2025

Last Modified

June 23, 2026

Advisory Details (2)

Auto-updated Jun 23, 2026
🔬 Proof of concept available. Patch available. Sources: github.
generic

Picklescan - Arbitrary Code Execution via numpy.f2py.crackfortran._eval_length Gadget | Advisories | VulnCheck

https://www.vulncheck.com/advisories/picklescan-arbitrary-code-execution-via-numpy-f2py-crackfortran-eval-length-gadget
github Patch Available🟡 PoC Available

Missing detection when calling numpy function numpy.f2py.crackfortran._eval_length · Advisory · mmaitre314/picklescan · GitHub

https://github.com/mmaitre314/picklescan/security/advisories/GHSA-6556-fwc2-fg2p

Vendor Advisories for CVE-2025-71339(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Affected Packages

(1 across 1 ecosystem)
PyPI(1)
PackageVulnerable rangeFixed inDependents
picklescan0.0.1 ... 0.0.9 (32 versions)0.0.33—

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 7× in last 7d / 26× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

Showing the most recent 100 of 106 total refreshes for this CVE.

  1. 2026-09-16 05:14 UTCEPSS rescore
  2. 2026-09-15 03:10 UTCEPSS rescore
  3. 2026-09-13 16:46 UTCEPSS rescore
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  14. 2026-09-01 00:04 UTCOSV refresh
  15. 2026-08-30 01:21 UTCEPSS rescore
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  24. 2026-08-19 17:03 UTCEPSS rescore
  25. 2026-08-18 13:48 UTCEPSS rescore
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  1. 2026-08-17 13:46 UTCEPSS rescore
  2. 2026-08-16 14:55 UTCEPSS rescore
  3. 2026-08-16 02:14 UTCEPSS rescore
  4. 2026-08-15 01:30 UTCEPSS rescore
  5. 2026-08-15 00:38 UTCEG score recompute
  6. 2026-08-13 22:00 UTCEPSS rescore
  7. 2026-08-12 13:50 UTCEPSS rescore
  8. 2026-08-11 13:42 UTCEPSS rescore
  9. 2026-08-10 23:59 UTCEPSS rescore
  10. 2026-08-09 22:18 UTCEG score recompute
  11. 2026-08-09 13:46 UTCEPSS rescore
  12. 2026-08-08 16:36 UTCEPSS rescore
  13. 2026-08-08 04:31 UTCEG score recompute
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  22. 2026-07-30 16:27 UTCEPSS rescore
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  24. 2026-07-29 01:21 UTCOSV refresh
  25. 2026-07-27 14:13 UTCEPSS rescore
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  31. 2026-07-23 14:18 UTCEPSS rescore
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  33. 2026-07-23 03:03 UTCEG score recompute
  34. 2026-07-22 14:08 UTCEPSS rescore
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  36. 2026-07-20 17:08 UTCEPSS rescore
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  45. 2026-07-15 16:57 UTCEPSS rescore
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  48. 2026-07-15 01:59 UTCEPSS rescore
  49. 2026-07-13 06:12 UTCEPSS rescore
  50. 2026-07-12 05:46 UTCEPSS rescore
  51. 2026-07-12 05:46 UTCEPSS rescore
  52. 2026-07-11 17:52 UTCOSV refresh
  53. 2026-07-11 08:27 UTCEPSS rescore
  54. 2026-07-11 08:27 UTCEPSS rescore
  55. 2026-07-09 19:10 UTCEPSS rescore
  56. 2026-07-08 15:15 UTCEPSS rescore
  57. 2026-07-07 13:46 UTCEPSS rescore
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  64. 2026-07-01 15:06 UTCEPSS rescore
  65. 2026-06-30 23:22 UTCEPSS rescore
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  67. 2026-06-29 14:06 UTCEPSS rescore
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  69. 2026-06-28 14:07 UTCEPSS rescore
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  71. 2026-06-28 04:56 UTCEPSS rescore
  72. 2026-06-28 04:56 UTCEPSS rescore
  73. 2026-06-27 03:08 UTCEPSS rescore
  74. 2026-06-25 13:49 UTCEPSS rescore
  75. 2026-06-25 13:49 UTCEPSS rescore

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2025-71339?
CVE-2025-71339 is a high vulnerability published on December 30, 2025. Picklescan before 0.0.33 fails to detect the numpy.f2py.crackfortran.evallength gadget in pickle reduce methods, allowing arbitrary code execution. Attackers can craft malicious pickle files that execute arbitrary Python code when loaded by victims who trust Picklescan's safety validation.
When was CVE-2025-71339 disclosed?
CVE-2025-71339 was first published in the National Vulnerability Database on December 30, 2025, with the most recent update on June 23, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2025-71339 actively exploited?
CVE-2025-71339 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 1% probability of exploitation in the next 30 days, which ranks it in the top 57.1% of all scored CVEs.
What is the CVSS score of CVE-2025-71339?
CVE-2025-71339 has a CVSS v3 base score of 8.1 (NVD).
How do I remediate CVE-2025-71339?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2025-71339, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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