NanaZip is the 7-Zip derivative intended for the modern Windows experience. Prior to 6.5.1749.0, NanaZip's WebAssembly archive handler in NanaZip.Codecs.Archive.WebAssembly.cpp allocates buffers from attacker-controlled 32-bit section and custom-name length fields without validating them against the data present in the file. A tiny crafted module can force multi-gigabyte allocations during listing or extraction through NameSize, Information.Size, and std::string or vector allocation paths, causing memory exhaustion or process termination. This issue is fixed in version 6.5.1749.0.
Advisories
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Fixes
Solution
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Workaround
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References
History
Tue, 14 Jul 2026 02:30:00 +0000
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ssvc
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Fri, 10 Jul 2026 18:45:00 +0000
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M2team
M2team nanazip |
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M2team
M2team nanazip |
Fri, 10 Jul 2026 17:15:00 +0000
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| Description | NanaZip is the 7-Zip derivative intended for the modern Windows experience. Prior to 6.5.1749.0, NanaZip's WebAssembly archive handler in NanaZip.Codecs.Archive.WebAssembly.cpp allocates buffers from attacker-controlled 32-bit section and custom-name length fields without validating them against the data present in the file. A tiny crafted module can force multi-gigabyte allocations during listing or extraction through NameSize, Information.Size, and std::string or vector allocation paths, causing memory exhaustion or process termination. This issue is fixed in version 6.5.1749.0. | |
| Title | NanaZip: Unbounded memory allocation (DoS) in NanaZip WebAssembly parser via attacker-controlled section/name length fields | |
| Weaknesses | CWE-400 CWE-789 |
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cvssV4_0
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Projects
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Status: PUBLISHED
Assigner: GitHub_M
Published:
Updated: 2026-07-14T02:00:57.604Z
Reserved: 2026-06-17T14:40:28.379Z
Link: CVE-2026-55782
Updated: 2026-07-14T02:00:39.317Z
No data.
No data.
OpenCVE Enrichment
Updated: 2026-07-14T02:45:04Z