CVE-2026-55781

Katalog CVE

CVSS 2.4 · Low EPSS 0,16%

Kerentanan Uncontrolled Resource Consumption. Skor CVSS 4.0 2.4 (Low) menurut github.com.

Deskripsi (NVD)

NanaZip is the 7-Zip derivative intended for the modern Windows experience. Prior to 6.5.1749.0, NanaZip's UFS and FFS image handler in NanaZip.Codecs.Archive.Ufs.cpp validates the superblock block size only against the MINBSIZE lower bound and does not validate the fs_fsize fragment size, allowing attacker-controlled 32-bit fields to flow into indirect-block, directory, and extraction buffer allocations. A tiny crafted UFS image can force multi-gigabyte allocations during open or extraction, causing memory exhaustion or process termination. This issue is fixed in version 6.5.1749.0.

Rincian

Terbit di NVD

10 Juli 2026

Terakhir diubah

10 Juli 2026

Status NVD

Deferred

CVSS 4.0

2.4 (Low), sumber github.com
CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X · uraikan di kalkulator

Jenis kelemahan (CWE)

CWE-400: Uncontrolled Resource Consumption
CWE-789: Memory Allocation with Excessive Size Value

EPSS (30 hari)

0,16% peluang dieksploitasi; lebih tinggi dari 4,5% CVE lain

Produk dan versi terdampak

NVD belum mencantumkan data produk (CPE) untuk CVE ini. Produk yang terdampak biasanya disebut di deskripsi dan di advisory vendor pada daftar referensi.

Referensi dan perbaikan

• https://github.com/M2Team/NanaZip/commit/6415b6bff70bc9c486b49cbbc1982724c67f8338
• https://github.com/M2Team/NanaZip/releases/tag/6.5.1749.0
• https://github.com/M2Team/NanaZip/security/advisories/GHSA-m34h-jf84-m74h