CVE-2026-55781:详情

CVE-2026-55781

2026-07-10
17h16 +00:00
2026-10-25
15h10 +00:00
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CVE 描述

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.

CVE 信息

相关弱点

CWE-ID 弱点名称 来源
CWE-400 Uncontrolled Resource Consumption
The product does not properly control the allocation and maintenance of a limited resource.
CWE-789 Memory Allocation with Excessive Size Value
The product allocates memory based on an untrusted, large size value, but it does not ensure that the size is within expected limits, allowing arbitrary amounts of memory to be allocated.

漏洞利用信息

Exploit Database EDB-ID : 52656

发布日期 : 2026-08-18 00h00 +00:00
作者 : Jorge González Milla
EDB 已验证 : No

参考资料