CVE-2023-45853NVD

Vulnerability 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.

Severity Level

CRITICAL(9.8)

Published Date

Oct 14, 2023

Last Modified

Oct 15, 2026

Exploitation Status

No confirmed exploitation yet

EPSS Score (30-Day)

3.18%Probability

Root Weakness (CWE)

CWE-190: Unknown/Unlisted Weakness ↗

Refer to the official MITRE database for detailed architectural specifications regarding this weakness.

CVSS v3.1 Base Metrics — Score 9.8 (CRITICAL)

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

Affected & Patched Versions

Affected Versions

Zlib Zlib < 1.3.1
Smihica Pyminizip <= 0.2.6

Patched Versions

Zlib Zlib 1.3.1

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