CVE-2025-40634

CVE-2025-40634 The TP-Link Archer AX50 router is vulnerable to a stack-based buffer overflow on its firmware version 1.0.14 Build 20240108 rel.426554555, leading to Remote Code Execution both in the LAN and in the WAN side. This vulnerability has the same root cause as CVE-2020-10881, found by th...

CVE-2020-1350

CVE-2020-1350 CVE-2020-1350 Proof-of-Concept Environment Setup 1. Download Windows Server 2016 2. Download a Linux box a secondary box to run this script 3. Install Active Directory/DNS on Windows Server 2016 let's say you named your legitimate domain 33y0re.com 4. Have NO DNS records on the...

SUSE CVE-2026-80212

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 class for each unknown DNS resource record type, class pair, or each unknown SvcParamKey, encountered...

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

DNS-Mayhem-CVE-2026-41096-Deep-Dive In‑depth technical analysis of CVE‑2026‑41096, a critical heap overflow in Windows DNSAPI.dll enabling remote code execution via crafted DNS responses. Includes attack vectors, patch insights, and defensive guidance for security teams. Overview CVE‑2026‑41096 i...

resolv: resolv gem: Denial of Service via uncontrolled memory growth from crafted DNS responses

A flaw was found in the resolv gem. An attacker controlling DNS responses e.g., a spoofed response or a malicious upstream DNS server can exploit this by sending crafted DNS responses containing many distinct unknown DNS resource record pairs or SvcParamKeys. This leads to uncontrolled memory...

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...

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...

AZL-103454 CVE-2026-69186 affecting package fluent-bit 3.1.10-7

c-ares is an asynchronous resolver library. Prior to 1.34.7, aresdnsparse trusts the attacker-controlled ANCOUNT, NSCOUNT, and ARCOUNT fields before confirming that the DNS response contains enough bytes for the claimed records. Because processanswer invokes parsing before transaction ID and...

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 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...

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...

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...