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CVE-2025-8291

nvd nist
Published: Oct 7, 2025Modified: Jun 17, 2026Deferred

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4.3
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N
Exploitability: 2.8 / Impact: 1.4
Source: CNA (Secondary)

Description

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.

Related CWEs

CWE-1285
Improper Validation of Specified Index, Position, or Offset in Input
The product receives input that is expected to specify an index, position, or offset into an indexable resource such as a buffer or file, but it does not validate or incorrectly validates that the specified index/position/offset has the required properties.

References (12)

Source: cna@python.org
Source: cna@python.org
Source: cna@python.org
Source: cna@python.org
Source: cna@python.org
Source: cna@python.org
Source: cna@python.org
Source: cna@python.org
Source: cna@python.org
Source: cna@python.org
Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0
Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0

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