CVE WatchJul 14, 2026

CVE-2023-45853

MiniZip in zlib through 1.3 has an integer overflow and resultant heap-based buffer overflow in zipOpenNewFileInZip4_64 via a long filename,

CVSS

9.8

Critical

EPSS

3.2%

p87

KEV

—

Exploit Today

0-100

Published: Oct 14, 2023 · Last modified: Jul 14, 2026 · CWE-190

EPSS · 30d

2.9%EPSS · 30 days3.2%

2026-06-302026-07-16

Technical description

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.

Official references

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