CVE-2026-27710

Summary

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.

Affected Software

VendorProductVersion RangeStatus
M2TeamNanaZip>= 5.0.1252.0, < 6.0.1638.0affected
M2TeamNanaZip>= 6.1, < 6.5.1638.0affected

Weaknesses

  • CWE-191: CWE-191: Integer Underflow (Wrap or Wraparound)

ADP Enrichment

CISA ADP Vulnrichment

  • SSVC:
  • Exploitation: poc
    • Automatable: no
    • Technical Impact: partial

Additional References

References