CVE-2025-40634

CVE-2025-40634 TP-Link Archer AX50 路由器在其固件版本 1.0.14 Build 20240108 rel.426554555 中存在栈缓冲区溢出漏洞，可在 LAN 和 WAN 侧实现远程代码执行。此漏洞与 Flashback 团队发现并在其系列视频中详细描述（见参考资料）的 CVE-2020-10881 具有相同的根本原因。不过，利用过程略有不同，因此需要编写新的漏洞利用代码。 根本原因 此漏洞出现在 conn-indicator 二进制程序中，该程序负责通过定期发送 DNS 查询并监听其在 32000 到 61000 之间随机 UDP...

CVE-2020-1350

CVE-2020-1350 CVE-2020-1350 概念验证 环境设置 1. 下载 Windows Server 2016 2. 下载一台 Linux 机器（用于运行此脚本的辅助机器） 3. 在 Windows Server 2016 上安装 Active Directory/DNS（假设你将合法域名命名为 33y0re.com） 4. Windows Server 2016 上 不要 有任何 DNS 记录（暂时） 5. 在 Windows Server 2016 映像上创建一个 "转发器" 记录，指向 Linux 机器的 IP 使用方法 1. 选择你的域名（"攻击" 域名） 2...

CVE-2026-69186

A flaw was found in c-ares, an asynchronous resolver library. A remote attacker can send a specially crafted DNS response that causes the aresdnsparse function to trust attacker-controlled record counts without validating if the response contains enough bytes for the claimed records. This can lea...

DNS-Mayhem-CVE-2026-41096-Deep-Dive

DNS-Mayhem-CVE-2026-41096-深入分析 对 CVE‑2026‑41096 的技术深入分析，这是一个在 Windows DNSAPI.dll 中通过精心构造的 DNS 响应实现远程代码执行的严重堆溢出漏洞。包括攻击向量、补丁分析及安全团队防御指南。 概述 CVE‑2026‑41096 是 DNSAPI.dll 中的一个基于堆的缓冲区溢出漏洞，DNSAPI.dll 是 Windows 中负责解析机器接收到的每个 DNS 响应的组件。由于 DNS 查找在后台不断且无声地进行，该漏洞将常规的网络操作转变为可靠的远程代码执行向量。 简单来说： 一个恶意的 DNS 响应即可危害...

EulerOS Virtualization 2.10.0 : mtr (EulerOS-SA-2026-3876)

According to the versions of the mtr packages installed, the EulerOS Virtualization installation on the remote host is affected by the following vulnerabilities : mtr is vulnerable to Out-of-bounds read vulnerability in ipinfolookup function. An attacker who can influence the TXT response used fo...

EulerOS Virtualization 2.12.1 : glibc (EulerOS-SA-2026-3586)

According to the versions of the glibc packages installed, the EulerOS Virtualization installation on the remote host is affected by the following vulnerabilities : The deprecated functions nsprintrrf, nsprintrr and fpnquery in the GNU C Library version 2.0.1 to version 2.43 fail to validate the...

EulerOS Virtualization 2.12.0 : mtr (EulerOS-SA-2026-3653)

According to the versions of the mtr package installed, the EulerOS Virtualization installation on the remote host is affected by the following vulnerabilities : mtr is vulnerable to Out-of-bounds read vulnerability in ipinfolookup function. An attacker who can influence the TXT response used for...

CVE-2026-20248

A vulnerability in the DNS over TCP implementation of Cisco Secure Firewall Adaptive Security Appliance ASA Software and Cisco Secure Firewall Threat Defense FTD Software could allow an unauthenticated, remote attacker to cause the TCP DNS response handler to unexpectedly restart, causing the...

OESA-2026-3864 ruby security update

Ruby is a fast and easy interpreted scripting language for object-oriented programming. It has many functions for processing text Files and perform system management tasks such as Perl. Security Fixes: An issue was discovered in the resolv gem before 0.7.2 for Ruby. Resolv::DNS::Resource.getclass...

Astra Linux – Vulnerability in dnsmasq

A buffer overflow in the dnsmasq’s extractaddresses function allows an attacker to trigger a heap out-of-bounds read and crash by exploiting a malformed DNS response. This enables extractname to advance the pointer past the end of the record...

Astra Linux – Vulnerability in connman

In ConnMan through version 1.44, the lookup string in nsresolv in dnsproxy.c can be NULL or an empty string when the TC Truncated bit is set in a DNS response. This allows attackers to cause a denial of service application crash or potentially execute arbitrary code, as those lookup values lead t...

Amazon Linux 2023 : ruby3.4, ruby3.4-bundled-gems, ruby3.4-default-gems (ALAS2023-2026-2145)

It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2023-2026-2145 advisory. An issue was discovered in the resolv gem before 0.7.2 for Ruby. Resolv::DNS::Resource.getclass, Resolv::DNS::Resource::Generic.create, and Resolv::DNS::SvcParam::Generic.create generate a new...

CVE-2026-89092

The nscd service in the GNU C Library 2.3.4 onwards may crash due to a stack overflow when a malicious DNS server returns too large a response for a DNS query, resulting in degraded DNS resolution for the system. Exploitation of this bug needs a system that has nscd enabled and using an untrusted...

AZL-100019 CVE-2026-89092 affecting package glibc 2.38-21

The nscd service in the GNU C Library 2.3.4 onwards may crash due to a stack overflow when a malicious DNS server returns too large a response for a DNS query, resulting in degraded DNS resolution for the system. Exploitation of this bug needs a system that has nscd enabled and using an untrusted...

DEBIAN-CVE-2026-89092

The nscd service in the GNU C Library 2.3.4 onwards may crash due to a stack overflow when a malicious DNS server returns too large a response for a DNS query, resulting in degraded DNS resolution for the system. Exploitation of this bug needs a system that has nscd enabled and using an untrusted...

CVE-2026-89092

The nscd service in the GNU C Library 2.3.4 onwards may crash due to a stack overflow when a malicious DNS server returns too large a response for a DNS query, resulting in degraded DNS resolution for the system. Exploitation of this bug needs a system that has nscd enabled and using an untrusted...

UBUNTU-CVE-2026-89092

The nscd service in the GNU C Library 2.3.4 onwards may crash due to a stack overflow when a malicious DNS server returns too large a response for a DNS query, resulting in degraded DNS resolution for the system. Exploitation of this bug needs a system that has nscd enabled and using an untrusted...

CVE-2026-89092

A flaw was found in glibc, specifically within the nscd service. A remote attacker, operating a malicious Domain Name System DNS server, could send an overly large DNS response. This could trigger a stack overflow in the nscd service, causing it to crash and leading to degraded DNS resolution for...

CVE-2026-89092 Stack overflow in nscd due to unbounded alloca use

The nscd service in the GNU C Library 2.3.4 onwards may crash due to a stack overflow when a malicious DNS server returns too large a response for a DNS query, resulting in degraded DNS resolution for the system. Exploitation of this bug needs a system that has nscd enabled and using an untrusted...

CVE-2026-89092

CVE-2026-89092 affects the nscd (Name Service Cache Daemon) service in GNU C Library 2.3.4 and later . The root cause is an unbounded alloca call that triggers a stack overflow when a malicious or compromised DNS server returns an excessively large response to a DNS query. The primary impact is a...