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CWE-416 释放后使用 类漏洞列表 4331

CWE-416 释放后使用 类弱点 4331 条 CVE 漏洞汇总,含 AI 中文分析。

CWE-416 释放后使用是一种内存安全漏洞,指程序在释放内存后仍引用该内存区域。攻击者常利用此缺陷,通过重新分配内存并控制其内容,诱导程序执行恶意代码或读取敏感数据,从而引发远程代码执行或信息泄露。开发者应避免此类风险,确保在指针置空前彻底解除引用,采用智能指针等自动内存管理机制,并严格验证内存生命周期,防止悬空指针操作。

MITRE CWE 官方描述
CWE:CWE-416 Use After Free 英文:产品在内存被释放后重新使用或引用该内存。在此之后,该内存可能会被重新分配并保存到另一个指针中,而原始指针则指向新分配内存中的某个位置。由于内存“属于”操作新指针的代码,因此使用原始指针的任何操作均不再有效。
常见影响 (4)
Integrity Modify Memory
The use of previously freed memory may corrupt valid data, if the memory area in question has been allocated and used properly elsewhere.
Availability DoS: Crash, Exit, or Restart
If chunk consolidation occurs after the use of previously freed data, the process may crash when invalid data is used as chunk information.
Confidentiality Read Memory
Read operations on freed memory can sometimes leak sensitive information instead of causing a crash
Integrity, Confidentiality, Availability Execute Unauthorized Code or Commands
If malicious data is entered before chunk consolidation can take place, it may be possible to take advantage of a write-what-where primitive to execute arbitrary code. If the newly allocated data happens to hold a class, in C++ for example, various function pointers may be scattered within the heap …
缓解措施 (2)
Architecture and Design Choose a language that provides automatic memory management.
Implementation When freeing pointers, be sure to set them to NULL once they are freed. However, the utilization of multiple or complex data structures may lower the usefulness of this strategy.
Effectiveness: Defense in Depth
代码示例 (2)
The following example demonstrates the weakness.
#include <stdio.h> #include <unistd.h> #define BUFSIZER1 512 #define BUFSIZER2 ((BUFSIZER1/2) - 8) int main(int argc, char **argv) { char *buf1R1; char *buf2R1; char *buf2R2; char *buf3R2; buf1R1 = (char *) malloc(BUFSIZER1); buf2R1 = (char *) malloc(BUFSIZER1); free(buf2R1); buf2R2 = (char *) malloc(BUFSIZER2); buf3R2 = (char *) malloc(BUFSIZER2); strncpy(buf2R1, argv[1], BUFSIZER1-1); free(buf1R1); free(buf2R2); free(buf3R2); }
Bad · C
The following code illustrates a use after free error:
char* ptr = (char*)malloc (SIZE); if (err) { abrt = 1; free(ptr); } ... if (abrt) { logError("operation aborted before commit", ptr); }
Bad · C
CVE ID 标题 CVSS 风险等级 Published
CVE-2026-102193 Windows Broadcast DVR 用户服务权限提升漏洞 — Windows 10 Version 1809 7.0 High 2026-10-13
CVE-2026-70023 Windows Hyper-V 提权漏洞 — Windows 10 Version 1809 7.8 High 2026-10-13
CVE-2026-100218 远程桌面网关服务远程代码执行漏洞 — Windows 10 Version 1607 8.1 High 2026-10-13
CVE-2026-100212 Microsoft Office Excel 远程代码执行漏洞 — Microsoft 365 Apps for Enterprise 8.8 High 2026-10-13
CVE-2026-100219 微软 QUIC 远程代码执行漏洞 — Windows 11 version 23H2 9.8 Critical 2026-10-13
CVE-2026-100200 Windows Update Service 权限提升漏洞 — Windows 11 version 23H2 7.0 High 2026-10-13
CVE-2026-100209 Microsoft Office Excel 远程代码执行漏洞 — Microsoft 365 Apps for Enterprise 8.8 High 2026-10-13
CVE-2026-100211 Microsoft Office Excel 远程代码执行漏洞 — Microsoft 365 Apps for Enterprise 8.8 High 2026-10-13
CVE-2026-100202 Windows 消息队列管理器远程代码执行漏洞 — Windows 10 Version 1607 9.8 Critical 2026-10-13
CVE-2026-97745 Microsoft Office Excel 远程代码执行漏洞 — Microsoft 365 Apps for Enterprise 8.8 High 2026-10-13
CVE-2026-97775 Microsoft Office Excel 远程代码执行漏洞 — Microsoft 365 Apps for Enterprise 8.8 High 2026-10-13
CVE-2026-97010 Microsoft Office Excel远程代码执行漏洞 — Microsoft 365 Apps for Enterprise 8.8 High 2026-10-13
CVE-2026-97743 Microsoft Office Excel 信息泄露漏洞 — Microsoft 365 Apps for Enterprise 6.5 Medium 2026-10-13
CVE-2026-97738 Microsoft Office Excel 远程代码执行漏洞 — Microsoft 365 Apps for Enterprise 8.8 High 2026-10-13
CVE-2026-96950 Windows UDFS驱动权限提升漏洞 — Windows 10 Version 1607 7.8 High 2026-10-13
CVE-2026-96947 Windows通用磁盘格式文件系统驱动权限提升漏洞 — Windows 10 Version 1607 7.8 High 2026-10-13
CVE-2026-96946 Windows UDFS驱动权限提升漏洞 — Windows 10 Version 1607 7.8 High 2026-10-13
CVE-2026-96937 Microsoft Windows 搜索组件权限提升漏洞 — Windows 10 Version 21H2 7.0 High 2026-10-13
CVE-2026-96934 Windows DHCP 服务器远程代码执行漏洞 — Windows 10 Version 1607 9.8 Critical 2026-10-13
CVE-2026-96923 Windows工作站服务提权漏洞 — Windows 10 Version 1607 7.0 High 2026-10-13
CVE-2026-96919 Windows Broadcast DVR用户服务权限提升漏洞 — Windows 10 Version 1809 7.0 High 2026-10-13
CVE-2026-96912 Windows客户端许可证服务提权漏洞 — Windows 10 Version 1809 7.8 High 2026-10-13
CVE-2026-96852 Windows TCP/IP 提权漏洞 — Windows 10 Version 1607 7.0 High 2026-10-13
CVE-2026-96304 Windows USB打印驱动提权漏洞 — Windows 10 Version 21H2 7.0 High 2026-10-13
CVE-2026-96323 Windows Update 权限提升漏洞 — Windows 10 Version 21H2 7.0 High 2026-10-13
CVE-2026-96322 Windows 远程桌面协议提权漏洞 — Windows 10 Version 1607 7.0 High 2026-10-13
CVE-2026-96324 Windows 搜索组件提权漏洞 — Windows 10 Version 1607 7.8 High 2026-10-13
CVE-2026-96249 Windows Win32内核子系统权限提升漏洞 — Windows 11 Version 24H2 7.8 High 2026-10-13
CVE-2026-96250 Windows USB 打印驱动程序提权漏洞 — Windows 10 Version 21H2 7.0 High 2026-10-13
CVE-2026-96254 Windows USB打印驱动权限提升漏洞 — Windows 10 Version 21H2 7.0 High 2026-10-13

CWE-416(释放后使用) 是常见的弱点类别,本平台收录该类弱点关联的 4331 条 CVE 漏洞。