CVE-2025-8291 (GCVE-0-2025-8291)

Vulnerability from cvelistv5 – Published: 2025-10-07 18:10 – Updated: 2026-04-21 20:17
VLAI
Title
ZIP64 End of Central Directory (EOCD) Locator record offset not checked
Summary
The 'zipfile' module would not check the validity of the ZIP64 End of Central Directory (EOCD) Locator record offset value would not be used to locate the ZIP64 EOCD record, instead the ZIP64 EOCD record would be assumed to be the previous record in the ZIP archive. This could be abused to create ZIP archives that are handled differently by the 'zipfile' module compared to other ZIP implementations. Remediation maintains this behavior, but checks that the offset specified in the ZIP64 EOCD Locator record matches the expected value.
Severity
4.3 (Medium)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N
SSVC
Exploitation: poc Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-1285 - Improper Validation of Specified Index, Position, or Offset in Input
Assigner
PSF
References
Impacted products
Vendor Product Version
Python Software Foundation CPython Affected: 0 , < 3.10.19 (python)
Affected: 3.11.0 , < 3.11.14 (python)
Affected: 3.12.0 , < 3.12.12 (python)
Affected: 3.13.0 , < 3.13.10 (python)
Affected: 3.14.0 , < 3.14.1 (python)
Create a notification for this product.
Credits
Caleb Brown (Google) Serhiy Storchaka Seth Larson
Show details on NVD website
To clipboard 

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  • Confirmed: The vulnerability has been validated from an analyst's perspective.
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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


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