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I. Basic Information for CVE-2025-11678
Vulnerability Information

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Vulnerability Title
Stack-based Buffer Overflow in libwebsockets DNS response parsing
Source: NVD (National Vulnerability Database)
Vulnerability Description
Stack-based Buffer Overflow in lws_adns_parse_label in warmcat libwebsockets allows, when the LWS_WITH_SYS_ASYNC_DNS flag is enabled during compilation, to overflow the label_stack, when the attacker is able to sniff a DNS request in order to craft a response with a matching id containing a label longer than the maximum.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
栈缓冲区溢出
Source: NVD (National Vulnerability Database)
Vulnerability Title
Libwebsockets 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Libwebsockets是lws-team开源的一个规范的 libwebsockets 网络库。 Libwebsockets存在安全漏洞,该漏洞源于启用LWS_WITH_SYS_ASYNC_DNS标志编译时,lws_adns_parse_label函数存在基于栈的缓冲区溢出,可能导致执行任意代码。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
VendorProductAffected VersionsCPESubscribe
warmcatlibwebsocket 4.0 ~ 4.4.2 -
II. Public POCs for CVE-2025-11678
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III. Intelligence Information for CVE-2025-11678
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