CVE-2023-45853MiniZip 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.
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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
- 8.8 HIGH (v3.1, CISA ADP)CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- Weakness (CWE)
- CWE-190
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- mitre
- NVD analysis
- Modified
- Record last updated
- Oct 14, 2026
- First seen by InfoSec Signals
- Oct 15, 2026
Affected products
zlib zlib zlib:zlib | before 1.3 | CISA ADP |
Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP siemens:simatic_s7_1500_cpu_1518_4_pn_dp_mfp (from the name) | from V3.1.0 before V3.1.5 | CISA ADP |
Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP siemens:simatic_s7_1500_cpu_1518f_4_pn_dp_mfp (from the name) | from V3.1.0 before V3.1.5 | CISA ADP |
Siemens SIPLUS S7-1500 CPU 1518-4 PN/DP MFP siemens:siplus_s7_1500_cpu_1518_4_pn_dp_mfp (from the name) | from V3.1.0 before V3.1.5 | CISA ADP |
zlib zlib zlib:zlib | before 1.3.1 | NVD |
smihica pyminizip smihica:pyminizip | through 0.2.6 | NVD |
References
- https://github.com/madler/zlib/pull/843issue-tracking, patch
- https://www.winimage.com/zLibDll/minizip.htmlproduct
- https://github.com/madler/zlib/blob/ac8f12c97d1afd9bafa9c710f827d40a407d3266/contrib/README.contrib#L1-L4product
- https://chromium.googlesource.com/chromium/src/+/de29dd6c7151d3cd37cb4cf0036800ddfb1d8b61mailing-list, patch
- https://chromium.googlesource.com/chromium/src/+/d709fb23806858847131027da95ef4c548813356mailing-list, patch
- http://www.openwall.com/lists/oss-security/2023/10/20/9mailing-list
- https://lists.debian.org/debian-lts-announce/2023/11/msg00026.htmlmailing-list, third-party-advisory
- https://security.netapp.com/advisory/ntap-20231130-0009/third-party-advisory
- https://pypi.org/project/pyminizip/#historyrelease-notes
- https://security.gentoo.org/glsa/202401-18vendor-advisory, third-party-advisory
- http://www.openwall.com/lists/oss-security/2024/01/24/10mailing-list
- https://cert-portal.siemens.com/productcert/html/ssa-398330.html
- https://cert-portal.siemens.com/productcert/html/ssa-470355.html
- https://cert-portal.siemens.com/productcert/html/ssa-769027.html
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.