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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-2026-112381 Apache Traffic Server 空指针解引用漏洞 — Apache Traffic Server 5.9 Medium 2026-10-21
CVE-2026-79976 Linux MCTP I2C+GPIO 空指针解引用漏洞 — zephyr 7.1 High 2026-10-21
CVE-2026-76492 Cisco Expressway 空指针漏洞 — Cisco TelePresence Video Communication Server (VCS) Expressway 7.5 High 2026-10-21
CVE-2026-20221 思科 Snort 3 GRE 拒绝服务漏洞 — Cisco Cyber Vision 5.8 Medium 2026-10-21
CVE-2026-96888 BIND Named 使用严格 QNAME 最小化时意外终止漏洞 — BIND 9 7.5 High 2026-10-21
CVE-2026-90484 Apache bRPC MySQL 回复解析空指针解引用漏洞 — Apache bRPC - - 2026-10-21
CVE-2026-82953 Apache bRPC 远程拒绝服务漏洞 — Apache bRPC - - 2026-10-21
CVE-2026-105923 QTriangulator 空指针解引用漏洞 — Qt 4.0 Medium 2026-10-21
CVE-2026-114046 FreeRDP 3.0.0 至 3.31.9 空指针解引用漏洞 — FreeRDP 6.5 Medium 2026-10-21
CVE-2026-113680 HarfBuzz 8.0.0-14.6.0 WebAssembly 空指针解引用 DoS 漏洞 — harfbuzz 5.5 Medium 2026-10-20
CVE-2026-112405 Pillow 0 通道合并空指针解引用漏洞 — Pillow 8.7 High 2026-10-19
CVE-2026-112392 Pillow 零尺寸图像滤镜空指针解引用漏洞 — Pillow 8.2 High 2026-10-19
CVE-2026-76787 UpdateHub FOTA 客户端空指针解引用漏洞 — zephyr 5.9 Medium 2026-10-19
CVE-2026-112259 GIMP 调色板导入空指针解引用漏洞 — Red Hat Enterprise Linux 10 5.5 Medium 2026-10-19
CVE-2026-111710 Netcore NR256CN Boa 1.5.140116 空指针解引用 DoS 漏洞 — NR256CN 7.5 High 2026-10-16
CVE-2026-57486 pupnp 空指针解引用漏洞 — pupnp 7.5 High 2026-10-16
CVE-2026-111373 FreeRDP 3.32.0 之前版本 WebSocket 空长度心跳空指针解引用漏洞 — FreeRDP 5.3 Medium 2026-10-16
CVE-2026-111144 libansilove 1.3.0至1.4.2 ansilove_xbin空指针解引用漏洞 — libansilove 5.5 Medium 2026-10-15
CVE-2026-111129 Assimp 6.0.5 Ogre动画轨道空指针解引用漏洞 — assimp 5.5 Medium 2026-10-15
CVE-2026-111128 Assimp 6.0.5 Ogre导入器骨骼赋值空指针解引用漏洞 — assimp 5.5 Medium 2026-10-15
CVE-2026-100353 kin-openapi 未完全修复GHSA-p6wj-qrr4-pgh5：openapi3filter中三个未修补的nil项恐慌路径漏洞 — kin-openapi 7.5 High 2026-10-15
CVE-2026-100349 kin-openapi 响应头声明内容时空指针崩溃 — kin-openapi 8.2 High 2026-10-15
CVE-2026-100348 kin-openapi self-referential $ref空指针DoS漏洞 — kin-openapi 5.3 Medium 2026-10-15
CVE-2026-24723 utilRequest.cgi空指针解引用漏洞 — File Station 5 5.3 Medium 2026-10-15
CVE-2026-24722 File Station 5 空指针解引用漏洞 — File Station 5 5.3 Medium 2026-10-15
CVE-2026-24721 群晖 File Station 5 空指针解引用漏洞 — File Station 5 5.3 Medium 2026-10-15
CVE-2025-29896 qsyncsrv.cgi 空指针解引用漏洞 — Qsync Central 2.3 Low 2026-10-15
CVE-2025-29895 qsyncsrv.cgi空指针解引用漏洞 — Qsync Central 2.3 Low 2026-10-15
CVE-2026-110834 FreeRDP 2.0.0至3.32.0 拒绝服务漏洞 — FreeRDP 6.5 Medium 2026-10-14
CVE-2026-110829 FreeRDP 3.0.0-3.31.0 空指针解引用漏洞 — FreeRDP 6.5 Medium 2026-10-14

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。