CVE-2026-20127

CVE-2026-20127 Overview An exploit for the Cisco Catalyst SD-WAN Controller authentication bypass vulnerability, CVE-2026-20127. This exploit targets the vbondprocchallengeackack handler. It sends a forged CHALLENGEACKACK message msgtype=10 with an attacker-controlled verifystatus=1 byte, directl...

CVE-2026-20127-Exploit-Extension

Resumen Ejecutivo El Defensor Complementario de CVE-2026-20127 es una extensión de navegador premium de nivel empresarial diseñada para inteligencia de amenazas proactiva y análisis defensivo. Esta herramienta encapsula investigación técnica autorizada sobre la vulnerabilidad de omisión de...

CVE-2026-20182

CVE-2026-20182 — Cisco Catalyst SD-WAN Controller / Manager Authentication Bypass A proof-of-concept exploit for CVE-2026-20182 , a critical CVSS 10.0 authentication bypass in the vdaemon DTLS service UDP/12346 on Cisco Catalyst SD-WAN Controller vSmart and Manager vManage. Disclosed: May 14, 202...

OESA-2026-3828 openssl security update

OpenSSL is a robust, commercial-grade, and full-featured toolkit for the Transport Layer Security TLS and Secure Sockets Layer SSL protocols. Security Fixes: Issue summary: Receiving a DTLS record for a future epoch while a handshake is in progress causes OpenSSL to buffer far more memory than th...

Astra Linux – Vulnerability in gnutls28

A flaw in GnuTLS’ DTLS handshake parsing allows for malformed fragments with zero length and non-zero offsets. This leads to an integer underflow during reassembly, resulting in an out-of-bounds read. This issue is remotely exploitable and could cause information disclosure or denial of service...

Astra Linux – Vulnerability in gnutls28

There is a heap buffer overflow vulnerability in the DTLS handshake fragment reassembly logic of GnuTLS. The issue arises in the mergehandshakepacket function, where incoming handshake fragments are matched and merged solely based on the handshake type, without verifying that the messagelength...

CVE-2026-54874

A flaw was found in OpenSSL. Receiving a DTLS Datagram Transport Layer Security record for a future epoch while a handshake is in progress causes OpenSSL to buffer an excessive amount of memory. This allows a peer to cause memory exhaustion, eventually resulting in a denial of service, using a...

CVE-2026-54874

Issue summary: Receiving a DTLS record for a future epoch while a handshake is in progress causes OpenSSL to buffer far more memory than the record itself requires. Impact summary: A peer can use a small amount of network traffic to make an OpenSSL DTLS endpoint retain a disproportionately large...

CVE-2026-59646

A flaw was found in Bouncy Castle for Java. The DTLS Datagram Transport Layer Security handshake reassembler allocates buffers based on an unchecked 24-bit length value. A remote attacker could exploit this vulnerability by sending a specially crafted DTLS handshake message, leading to excessive...

PT-2026-81301

Name of the Vulnerable Software and Affected Versions OpenSSL versions 1.0.2 through 4.0 Description Receiving a DTLS record for a future epoch during a handshake causes the system to buffer significantly more memory than the record requires. This occurs because the software retains the entire re...

Linux Distros Unpatched Vulnerability : CVE-2026-54874

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - Issue summary: Receiving a DTLS record for a future epoch while a handshake is in progress causes OpenSSL to buffer far more memory than the record itself...

Nutanix AOS : Multiple Vulnerabilities (NXSA-AOS-7.3.1.14)

The version of AOS installed on the remote host is prior to 7.3.1.14. It is, therefore, affected by multiple vulnerabilities as referenced in the NXSA-AOS-7.3.1.14 advisory. - A flaw was found in gnutls. Servers configured with RSA-PSK RivestShamirAdleman Pre-Shared Key wrongfully matched usernam...

openjdk: Improve DTLS handshaking (Oracle CPU 2026-07)

A flaw was found in OpenJDK. The DTLS implementation is open to two different DoS attacks...

openjdk: Improve DTLS handshaking (Oracle CPU 2026-07)

A flaw was found in OpenJDK. The DTLS implementation is open to two different DoS attacks...

Amazon Linux 2023 : gstreamer1-plugin-openh264, gstreamer1-plugins-bad-free, gstreamer1-plugins-bad-free-devel (ALAS2023-2026-1994)

It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2023-2026-1994 advisory. A flaw was found in GStreamer's gst-plugins-bad package. When processing a specially crafted H.264 video file containing malformed MVC or SVC extension slice NAL units, a 1-byte heap...

Memory Allocation with Excessive Size Value

Overview Affected versions of this package are vulnerable to Memory Allocation with Excessive Size Value in the processRecord method of DTLSReliableHandshake, where the DTLSReassembler constructor allocates a bytelength buffer directly from the 24-bit handshake length field without checking it...

Memory Allocation with Excessive Size Value

Overview Affected versions of this package are vulnerable to Memory Allocation with Excessive Size Value in the processRecord method of DTLSReliableHandshake, where the DTLSReassembler constructor allocates a bytelength buffer directly from the 24-bit handshake length field without checking it...

Memory Allocation with Excessive Size Value

Overview Affected versions of this package are vulnerable to Memory Allocation with Excessive Size Value in the processRecord method of DTLSReliableHandshake, where the DTLSReassembler constructor allocates a bytelength buffer directly from the 24-bit handshake length field without checking it...

Memory Allocation with Excessive Size Value

Overview Affected versions of this package are vulnerable to Memory Allocation with Excessive Size Value in the processRecord method of DTLSReliableHandshake, where the DTLSReassembler constructor allocates a bytelength buffer directly from the 24-bit handshake length field without checking it...

CVE-2026-59646

In Bouncy Castle for Java before 1.85, DTLS handshake reassembler allocates buffer from unchecked 24-bit length. This issue also affects Bouncy Castle for Java LTS before 2.73.12, and Bouncy Castle for Java FIPS BC-FJA before bctls-fips 1.0.24 1.0.X series, 2.0.24 2.0.X series and 2.1.24 2.1.X...