CVE-2023-45853
criticalMiniZip 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…
Vendor / product: Zlib — zlib
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.
CVSS
9.8
9.8 (CVSS v3.1)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Severity source: NVD CVSS v3.1 (nvd@nist.gov)
Timeline (UTC)
Published: 2023-10-14 02:15
Modified: 2026-10-15 00:16
NVD status: Modified
Last synced 1 day ago
Verified against the source API 2026-10-27 07:06 UTC
Exploitation
Not listed in CISA KEV (as of last catalog sync)
Absence from KEV does not mean a CVE is not exploited. Exploitation status: unknown (no authoritative evidence in our sources).
Affected products
zlib / zlib <1.3.1
smihica / pyminizip ≤0.2.6
Weakness classification (CWE)
Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.
Mitigation & advisories
Patch / mitigation: https://chromium.googlesource.com/chromium/src/+/d709fb23806858847131027da95ef4c548813356
Patch / mitigation: https://chromium.googlesource.com/chromium/src/+/de29dd6c7151d3cd37cb4cf0036800ddfb1d8b61
Patch / mitigation: https://github.com/madler/zlib/pull/843
Patch / mitigation: https://chromium.googlesource.com/chromium/src/+/d709fb23806858847131027da95ef4c548813356
Patch / mitigation: https://chromium.googlesource.com/chromium/src/+/de29dd6c7151d3cd37cb4cf0036800ddfb1d8b61
Patch / mitigation: https://github.com/madler/zlib/pull/843
References
- http://www.openwall.com/lists/oss-security/2023/10/20/9 cve@mitre.org
- http://www.openwall.com/lists/oss-security/2024/01/24/10 cve@mitre.org
- https://chromium.googlesource.com/chromium/src/+/d709fb23806858847131027da95ef4c548813356 cve@mitre.org
- https://chromium.googlesource.com/chromium/src/+/de29dd6c7151d3cd37cb4cf0036800ddfb1d8b61 cve@mitre.org
- https://github.com/madler/zlib/blob/ac8f12c97d1afd9bafa9c710f827d40a407d3266/contrib/READM... cve@mitre.org
- https://github.com/madler/zlib/pull/843 cve@mitre.org
- https://lists.debian.org/debian-lts-announce/2023/11/msg00026.html cve@mitre.org
- https://pypi.org/project/pyminizip/#history cve@mitre.org
- https://security.gentoo.org/glsa/202401-18 cve@mitre.org
- https://security.netapp.com/advisory/ntap-20231130-0009/ cve@mitre.org
- https://www.winimage.com/zLibDll/minizip.html cve@mitre.org
- http://www.openwall.com/lists/oss-security/2023/10/20/9 af854a3a-2127-422b-91ae-364da2661108
- http://www.openwall.com/lists/oss-security/2024/01/24/10 af854a3a-2127-422b-91ae-364da2661108
- https://chromium.googlesource.com/chromium/src/+/d709fb23806858847131027da95ef4c548813356 af854a3a-2127-422b-91ae-364da2661108
- https://chromium.googlesource.com/chromium/src/+/de29dd6c7151d3cd37cb4cf0036800ddfb1d8b61 af854a3a-2127-422b-91ae-364da2661108
- https://github.com/madler/zlib/blob/ac8f12c97d1afd9bafa9c710f827d40a407d3266/contrib/READM... af854a3a-2127-422b-91ae-364da2661108
- https://github.com/madler/zlib/pull/843 af854a3a-2127-422b-91ae-364da2661108
- https://lists.debian.org/debian-lts-announce/2023/11/msg00026.html af854a3a-2127-422b-91ae-364da2661108
- https://pypi.org/project/pyminizip/#history af854a3a-2127-422b-91ae-364da2661108
- https://security.gentoo.org/glsa/202401-18 af854a3a-2127-422b-91ae-364da2661108
- https://security.netapp.com/advisory/ntap-20231130-0009/ af854a3a-2127-422b-91ae-364da2661108
- https://www.winimage.com/zLibDll/minizip.html af854a3a-2127-422b-91ae-364da2661108
- https://cert-portal.siemens.com/productcert/html/ssa-398330.html 0b142b55-0307-4c5a-b3c9-f314f3fb7c5e
- https://cert-portal.siemens.com/productcert/html/ssa-470355.html 0b142b55-0307-4c5a-b3c9-f314f3fb7c5e
- https://cert-portal.siemens.com/productcert/html/ssa-769027.html 0b142b55-0307-4c5a-b3c9-f314f3fb7c5e
Data sources
NVD CVE API 2.0 — fetched 2026-10-27 07:06 UTC · record ↗