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CWE-476 空指针解引用 类漏洞列表 1557

CWE-476 空指针解引用 类弱点 1557 条 CVE 漏洞汇总，含 AI 中文分析。

CWE-476空指针解引用属于内存安全类漏洞，指程序在指针为NULL时仍尝试访问其指向的内存。攻击者通常通过构造特定输入触发空指针，导致程序崩溃引发拒绝服务，或在特定架构下利用该异常改变执行流以执行恶意代码。开发者应避免在解引用前未验证指针有效性，通过添加空值检查、使用静态分析工具检测潜在风险，并确保代码逻辑能妥善处理无效指针情况，从而从根本上消除隐患。

MITRE CWE 官方描述
CWE：CWE-476 NULL Pointer Dereference（空指针解引用） 英文：The product dereferences a pointer that it expects to be valid but is NULL. 译文：产品解引用了一个它预期为有效但实际上为 NULL 的指针。
常见影响 (2)
Availability DoS: Crash, Exit, or Restart
NULL pointer dereferences usually result in the failure of the process unless exception handling (on some platforms) is available and implemented. Even when exception handling is being used, it can still be very difficult to return the software to a safe state of operation.
Integrity, Confidentiality Execute Unauthorized Code or Commands, Read Memory, Modify Memory
In rare circumstances, when NULL is equivalent to the 0x0 memory address and privileged code can access it, then writing or reading memory is possible, which may lead to code execution.
缓解措施 (5)
Implementation For any pointers that could have been modified or provided from a function that can return NULL, check the pointer for NULL before use. When working with a multithreaded or otherwise asynchronous environment, ensure that proper locking APIs are used to lock before the check, and unlock when it has finished [REF-1484].
Requirements Select a programming language that is not susceptible to these issues.
Implementation Check the results of all functions that return a value and verify that the value is non-null before acting upon it.
Effectiveness: Moderate
Architecture and Design Identify all variables and data stores that receive information from external sources, and apply input validation to make sure that they are only initialized to expected values.
Implementation Explicitly initialize all variables and other data stores, either during declaration or just before the first usage.
代码示例 (2)
This example takes an IP address from a user, verifies that it is well formed and then looks up the hostname and copies it into a buffer.
void host_lookup(char *user_supplied_addr){ struct hostent *hp; in_addr_t *addr; char hostname[64]; in_addr_t inet_addr(const char *cp); /*routine that ensures user_supplied_addr is in the right format for conversion */ validate_addr_form(user_supplied_addr); addr = inet_addr(user_supplied_addr); hp = gethostbyaddr( addr, sizeof(struct in_addr), AF_INET); strcpy(hostname, hp->h_name); }
Bad · C
In the following code, the programmer assumes that the system always has a property named "cmd" defined. If an attacker can control the program's environment so that "cmd" is not defined, the program throws a NULL pointer exception when it attempts to call the trim() method.
String cmd = System.getProperty("cmd"); cmd = cmd.trim();
Bad · Java
CVE ID 标题 CVSS 风险等级 Published
CVE-2026-96953 Windows UDFS 远程代码执行漏洞 — Windows 10 Version 1607 7.8 High 2026-10-13
CVE-2026-88079 Windows MIDI服务模块提权漏洞 — Windows 11 Version 24H2 7.0 High 2026-10-13
CVE-2026-88076 Windows Installer 权限提升漏洞 — Windows 10 Version 1607 7.0 High 2026-10-13
CVE-2026-83665 Windows DHCP Server 拒绝服务漏洞 — Windows 10 Version 1607 7.5 High 2026-10-13
CVE-2026-83636 Windows Hyper-V 拒绝服务漏洞 — Windows 10 Version 21H2 6.5 Medium 2026-10-13
CVE-2026-85859 Windows消息队列队列管理器拒绝服务漏洞 — Windows 10 Version 1607 6.5 Medium 2026-10-13
CVE-2026-84017 Windows RRAS 远程拒绝服务漏洞 — Windows 10 Version 1607 7.5 High 2026-10-13
CVE-2026-70248 Windows Hyper-V 拒绝服务漏洞 — Windows 10 Version 1607 6.5 Medium 2026-10-13
CVE-2026-83648 Windows活动目录域服务拒绝服务漏洞 — Windows 10 Version 21H2 6.5 Medium 2026-10-13
CVE-2026-83571 Windows 音频服务信息泄露漏洞 — Windows 10 Version 1607 5.5 Medium 2026-10-13
CVE-2026-69978 Microsoft Windows VMSwitch 拒绝服务漏洞 — Windows 10 Version 1809 5.6 Medium 2026-10-13
CVE-2026-69795 Windows 剪贴板服务器权限提升漏洞 — Windows 10 Version 1809 7.0 High 2026-10-13
CVE-2026-70566 Windows Schannel 提权漏洞 — Windows 10 Version 1607 7.8 High 2026-10-13
CVE-2026-104343 Adobe FrameMaker 空指针解引用漏洞 — Adobe FrameMaker 2026 5.5 Medium 2026-10-13
CVE-2026-104004 MongoDB 服务器插入时因校验器崩溃 — MongoDB Server 6.5 Medium 2026-10-13
CVE-2026-109967 yt-dlp-web-ui 4.0.0 NULL指针解引用导致拒绝服务漏洞 — yt-dlp-web-ui 7.5 High 2026-10-13
CVE-2026-109942 FreeRDP 2.3.0至3.32.0空指针解引用漏洞 — FreeRDP 6.5 Medium 2026-10-13
CVE-2026-109939 FreeRDP 3.27.1 至 3.32.0 空指针解引用漏洞 — FreeRDP 6.5 Medium 2026-10-13
CVE-2026-109679 FreeRDP 3.0.0-beta4至3.32.0 ARM响应空指针崩溃漏洞 — FreeRDP 5.3 Medium 2026-10-13
CVE-2026-109107 Wavlink WL-WN592AX6 upload.cgi空指针解引用漏洞 — WL-WN592AX6 6.5 Medium 2026-10-13
CVE-2026-109280 ImageMagick 7.1.0-20至7.1.2-32版本 -fx选项使用后释放漏洞 — ImageMagick 2.5 Low 2026-10-12
CVE-2026-109272 ImageMagick 7.1.1-31至7.1.2-32 PostScript解码器空指针解引用漏洞 — ImageMagick 3.7 Low 2026-10-12
CVE-2026-109258 ImageMagick 7.1.2-32 前版本 FX操作无效内存释放漏洞 — ImageMagick 2.5 Low 2026-10-12
CVE-2026-109252 FreeRDP 3.9.0至3.32.0 RDPEAR空指针解引用漏洞 — FreeRDP 5.3 Medium 2026-10-12
CVE-2026-109241 FreeRDP 3.32.0 前版本视频重定向通道空指针解引用漏洞 — FreeRDP 3.1 Low 2026-10-12
CVE-2026-19737 ESP32 I2S驱动空指针解引用漏洞 — zephyr 5.5 Medium 2026-10-11
CVE-2026-108093 GIMP XCF加载空指针解引用拒绝服务漏洞 — Red Hat Enterprise Linux 10 5.5 Medium 2026-10-09
CVE-2026-104114 illumos nwamd空指针解引用本地拒绝服务漏洞 — illumos-gate 5.4 Medium 2026-10-09
CVE-2026-108063 Libhangul hanja_new() 空指针解引用漏洞 — Red Hat Enterprise Linux 10 5.5 Medium 2026-10-09
CVE-2026-107655 Cups 远程拒绝服务漏洞 — Red Hat Hardened Images 4.0 Medium 2026-10-09

CWE-476（空指针解引用） 是常见的弱点类别，本平台收录该类弱点关联的 1557 条 CVE 漏洞。