CVE-2026-27710
NanaZip .NET Single-File Parser Integer Underflow Leads to Unbounded Allocation (DoS)
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, a denial-of-service vulnerability exists in NanaZip’s `.NET Single File Application` parser. A crafted bundle can force an integer underflow in header-size calculation and trigger an unbounded memory allocation attempt during archive open. Versions 6.0.1638.0 and 6.5.1638.0 fix the issue.
| CWE | CWE-191 |
| 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