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CWE-908 (对未经初始化资源的使用) — Vulnerability Class 290

290 vulnerabilities classified as CWE-908 (对未经初始化资源的使用). AI Chinese analysis included.

CWE-908 represents a critical software weakness where an application accesses or utilizes a resource that has not been properly initialized. This flaw typically arises when developers fail to set default values or allocate necessary memory before first use, leading to unpredictable system behavior. Attackers often exploit this vulnerability by triggering specific code paths that expose uninitialized data, potentially causing application crashes, invalid memory access errors, or information disclosure of sensitive residual data from previous operations. To mitigate this risk, developers must enforce strict initialization protocols, ensuring all variables, pointers, and objects are explicitly assigned valid states before any read or write operations occur. Implementing comprehensive static analysis tools and rigorous code reviews further helps identify these gaps, ensuring robust resource management and preventing the execution of undefined logic that could compromise system stability or security.

MITRE CWE Description
The product uses or accesses a resource that has not been initialized. When a resource has not been properly initialized, the product may behave unexpectedly. This may lead to a crash or invalid memory access, but the consequences vary depending on the type of resource and how it is used within the product.
Common Consequences (2)
Confidentiality Read Memory, Read Application Data
When reusing a resource such as memory or a program variable, the original contents of that resource may not be cleared before it is sent to an untrusted party.
Availability DoS: Crash, Exit, or Restart
The uninitialized resource may contain values that cause program flow to change in ways that the programmer did not intend.
Mitigations (4)
Implementation Explicitly initialize the resource before use. If this is performed through an API function or standard procedure, follow all required steps.
Implementation Pay close attention to complex conditionals that affect initialization, since some branches might not perform the initialization.
Implementation Avoid race conditions (CWE-362) during initialization routines.
Build and Compilation Run or compile the product with settings that generate warnings about uninitialized variables or data.
Examples (2)
Here, a boolean initiailized field is consulted to ensure that initialization tasks are only completed once. However, the field is mistakenly set to true during static initialization, so the initialization code is never reached.
private boolean initialized = true; public void someMethod() { if (!initialized) { // perform initialization tasks ... initialized = true; }
Bad · Java
The following code intends to limit certain operations to the administrator only.
$username = GetCurrentUser(); $state = GetStateData($username); if (defined($state)) { $uid = ExtractUserID($state); } # do stuff if ($uid == 0) { DoAdminThings(); }
Bad · Perl
CVE ID Title CVSS Severity Published
CVE-2026-85089 FreeRDP before 3.31.0 Information Disclosure via uninitialized heap memory — FreeRDP 6.5 Medium 2026-09-03
CVE-2026-84326 Google Chrome 资源管理错误漏洞 — Chrome - - 2026-09-01
CVE-2026-84267 Gvfs: sftp: uninitialized heap disclosure in read_string() — gvfs 4.3 Medium 2026-09-01
CVE-2026-78914 Google Chrome 资源管理错误漏洞 — Chrome - - 2026-08-25
CVE-2026-79040 Google Chrome 资源管理错误漏洞 — Chrome - - 2026-08-25
CVE-2026-78977 Google Chrome 资源管理错误漏洞 — Chrome - - 2026-08-25
CVE-2026-78984 Google Chrome 资源管理错误漏洞 — Chrome - - 2026-08-25
CVE-2026-79221 Google Chrome 资源管理错误漏洞 — Chrome - - 2026-08-25
CVE-2026-78962 Google Chrome 资源管理错误漏洞 — Chrome - - 2026-08-25
CVE-2026-79269 Google Chrome 资源管理错误漏洞 — Chrome - - 2026-08-25
CVE-2026-79229 Google Chrome 资源管理错误漏洞 — Chrome - - 2026-08-25
CVE-2026-79285 Google Chrome 资源管理错误漏洞 — Chrome - - 2026-08-25
CVE-2026-79120 Google Chrome 资源管理错误漏洞 — Chrome - - 2026-08-25
CVE-2026-79270 Google Chrome 资源管理错误漏洞 — Chrome - - 2026-08-25
CVE-2026-78969 Google Chrome 资源管理错误漏洞 — Chrome - - 2026-08-25
CVE-2026-78958 Google Chrome 资源管理错误漏洞 — Chrome - - 2026-08-25
CVE-2026-79007 Google Chrome 资源管理错误漏洞 — Chrome - - 2026-08-25
CVE-2026-79118 Google Chrome 资源管理错误漏洞 — Chrome - - 2026-08-25
CVE-2026-78965 Google Chrome 资源管理错误漏洞 — Chrome - - 2026-08-25
CVE-2026-78986 Google Chrome 资源管理错误漏洞 — Chrome - - 2026-08-25
CVE-2026-19448 Vulnerabilities in IBM AIX and PowerVM VIOS — AIX 6.5 Medium 2026-08-20
CVE-2026-63381 Libevent: Dangling Pointer in `evbuffer_add_buffer_reference` — libevent 5.8 Medium 2026-08-20
CVE-2026-16827 Vulnerabilities in IBM AIX and PowerVM VIOS — AIX 5.9 Medium 2026-08-19
CVE-2026-58084 Kernel stack disclosure via timer_settime(2) — FreeBSD - - 2026-08-19
CVE-2026-49425 Kernel stack disclosure in 32-bit compatibility support — FreeBSD - - 2026-08-19
CVE-2026-49424 Kernel stack disclosure in Linux compatibility layer — FreeBSD - - 2026-08-19
CVE-2026-49423 Remote DOS via uninitialized memory access in KTLS receive — FreeBSD - - 2026-08-19
CVE-2026-76042 Google Chrome 资源管理错误漏洞 — Chrome - - 2026-08-18
CVE-2026-16868 IBM i is Affected By Multiple Vulnerabilities in NetServer — i 8.1 High 2026-08-13
CVE-2026-70459 rsync 3.0.0 < 3.5.0 Daemon Crash via Malformed File List Entry — rsync 5.3 Medium 2026-08-13

Vulnerabilities classified as CWE-908 (对未经初始化资源的使用) represent 290 CVEs. The CWE taxonomy describes the weakness; review individual CVEs for product-specific impact.