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.
Metrics
Affected Vendors & Products
References
History
Wed, 15 Oct 2025 16:15:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Weaknesses | CWE-1285 |
Fri, 10 Oct 2025 00:15:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Weaknesses | CWE-130 | |
| References |
| |
| Metrics |
threat_severity
|
threat_severity
|
Thu, 09 Oct 2025 18:45:00 +0000
Wed, 08 Oct 2025 19:15:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Metrics |
ssvc
|
Wed, 08 Oct 2025 13:45:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| First Time appeared |
Python
Python cpython |
|
| Vendors & Products |
Python
Python cpython |
Tue, 07 Oct 2025 18:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| References |
|
Tue, 07 Oct 2025 18:15:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| 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. | |
| Title | ZIP64 End of Central Directory (EOCD) Locator record offset not checked | |
| References |
| |
| Metrics |
cvssV3_1
|
Status: PUBLISHED
Assigner: PSF
Published: 2025-10-07T18:10:05.908Z
Updated: 2025-10-15T15:55:22.109Z
Reserved: 2025-07-28T21:05:06.237Z
Link: CVE-2025-8291
Updated: 2025-10-08T18:41:10.269Z
Status : Awaiting Analysis
Published: 2025-10-07T18:16:00.317
Modified: 2025-10-15T16:15:36.573
Link: CVE-2025-8291