CVE-2026-27709
NanaZip .NET Single-File Manifest Parser Vulnerable to Out-of-Bounds Read via Unchecked RelativePathLength
CVSS Score
0.0
EPSS Score
0.0%
EPSS Percentile
0th
NanaZip is an open source file archive. Starting in version 5.0.1252.0 and prior to versions 6.0.1638.0 and 6.5.1638.0, NanaZip’s `.NET Single File Application` parser has an out-of-bounds read vulnerability in manifest parsing. A crafted bundle can provide a malformed `RelativePathLength` so the parser constructs a `std::string` from memory beyond `HeaderBuffer`, leading to crash and potential in-process memory disclosure. Versions 6.0.1638.0 and 6.5.1638.0 fix the issue.
| CWE | CWE-125 |
| Vendor | m2team |
| Product | nanazip |
| Published | Feb 25, 2026 |
| Last Updated | Feb 26, 2026 |
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Affected Versions
M2Team / NanaZip
>= 5.0.1252.0, < 6.0.1638.0 >= 6.1, < 6.5.1638.0