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CVE-2026-42442

Estado: AnalizadaMedia (5.5)—

NanaZip is an open source file archive. From 5.0.1252.0 to before 6.0.1698.0, a null-pointer dereference exists in the UFS/UFS2 filesystem image parser in NanaZip. The vulnerability is triggered when opening a crafted UFS image where the root inode (inode 2) is set to IFLNK (symlink) instead of IFDIR (directory). The parser unconditionally treats the root inode as a directory without checking its type, and when the symlink has an embedded target (small di_size), the directory data buffer is zero-length, causing a null-pointer dereference on the first read. This vulnerability is fixed in 6.0.1698.0.

CVSS

Probabilidad de explotación (EPSS)

EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).

Tecnologías afectadas (1)

M2team — Nanazip

CWE

Referencias

JSON original (NVD)

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  "id": "CVE-2026-42442",
  "cveTags": [],
  "metrics": {
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          "options": [
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              "exploitation": "none"
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              "automatable": "no"
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          ],
          "version": "2.0.3",
          "timestamp": "2026-05-13T14:43:15.494462Z"
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  "published": "2026-05-12T20:16:41.393",
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      "description": [
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          "value": "CWE-476"
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    }
  ],
  "lastModified": "2026-06-17T10:47:51.003",
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