MiniZip in zlib through 1.3 has an integer overflow and resultant heap-based buffer overflow in zipOpenNewFileInZip4_64
36823
27 January 2026
27 January 2026
CLOSED
LOW
9.8 Critical - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVE-2023-45853
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Brocade Security Advisory ID |
BSA-2026-2627 |
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Component |
zlib |
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Summary
MiniZip in zlib through 1.3 has an integer overflow and resultant heap-based buffer overflow in zipOpenNewFileInZip4_64 via a long filename, comment, or extra field. NOTE: MiniZip is not a supported part of the zlib product. NOTE: pyminizip through 0.2.6 is also vulnerable because it bundles an affected zlib version, and exposes the applicable MiniZip code through its compress API.
Note: minizip is part of the zlib module as an extra library. Brocade products do not use this library
Products Affected
- No Brocade Fibre channel products from Broadcom are affected
Products Not Affected
- Brocade Fabric OS versions 9.1.0 through 10.0
[VEX Justification: Vulnerable_code_not_in_execute_path] - Brocade Fabric OS versions before 9.1.0
[VEX Justification: Vulnerable_code_not_present] - Brocade ASCG
[VEX Justification: Vulnerable_code_not_in_execute_path] - Brocade SANnav
[VEX Justification: Vulnerable_code_not_in_execute_path]
Solution
- While Brocade Fabric OS is not affected, a security update has been provided in Brocade Fabric OS 10.0.0
Revision History
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Version |
Change |
Date |
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1.0 |
Initial Publication |
January 27, 2026 |
Disclaimer
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