DTLS Retransmits Handshake Messages From a Stale Buffer Offset

Issue summary: The DTLS retransmission logic does not correctly handle a handshake message write that is suspended part-way through. The retransmitted message can be read past the message buffer and the retransmission overwrites the internal state the suspended write needs to resume correctly...

Unauthenticated and Undersized DTLS 1.2 AEAD Record Causes DoS

Issue summary: An established DTLS 1.2 association using an AEAD cipher suite can be terminated by a single unauthenticated datagram whose encrypted fragment is shorter than the mandatory explicit IV and authentication tag overhead. Impact summary: An attacker who can send a datagram that is rout...

OpenSSL -- Multiple vulnerabilities

The OpenSSL project reports: DTLS Retransmits Handshake Messages From a Stale Buffer Offset CVE-2026-84782 High Use-After-Free in X.509 Extension Cache Under Concurrent Use CVE-2026-84783 Moderate Excessive Memory Allocation in Relative CRLDP Processing CVE-2026-35189 Low QUIC Unvalidated...

FreeBSD-SA-26:68.openssl

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA512 ============================================================================= FreeBSD-SA-26:68.openssl Security Advisory The FreeBSD Project Topic: Out-of-bounds read in OpenSSL DTLS retransmission Category: contrib Module: openssl Announced:...

CVE-2026-84782: Out-of-bounds Read

Issue summary: The DTLS retransmission logic does not correctly handle a handshake message write that is suspended part-way through. The retransmitted message can be read past the message buffer and the retransmission overwrites the internal state the suspended write needs to resume correctly...

CVE-2026-84782

Issue summary: The DTLS retransmission logic does not correctly handle a handshake message write that is suspended part-way through. The retransmitted message can be read past the message buffer and the retransmission overwrites the internal state the suspended write needs to resume correctly...

CVE-2026-75806: Improper Validation of Specified Quantity in Input

Issue summary: An established DTLS 1.2 association using an AEAD cipher suite can be terminated by a single unauthenticated datagram whose encrypted fragment is shorter than the mandatory explicit IV and authentication tag overhead. Impact summary: An attacker who can send a datagram that is rout...

Linux Distros Unpatched Vulnerability : CVE-2026-75806

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - Issue summary: An established DTLS 1.2 association using an AEAD cipher suite can be terminated by a single unauthenticated datagram whose encrypted fragment is...

UBUNTU-CVE-2026-75806

Issue summary: An established DTLS 1.2 association using an AEAD cipher suite can be terminated by a single unauthenticated datagram whose encrypted fragment is shorter than the mandatory explicit IV and authentication tag overhead. Impact summary: An attacker who can send a datagram that is rout...

Linux Distros Unpatched Vulnerability : CVE-2026-84782

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - Issue summary: The DTLS retransmission logic does not correctly handle a handshake message write that is suspended part-way through. The retransmitted message c...

CVE-2026-84782: Out-of-bounds Read

Issue summary: The DTLS retransmission logic does not correctly handle a handshake message write that is suspended part-way through. The retransmitted message can be read past the message buffer and the retransmission overwrites the internal state the suspended write needs to resume correctly...

UBUNTU-CVE-2026-84782

Issue summary: The DTLS retransmission logic does not correctly handle a handshake message write that is suspended part-way through. The retransmitted message can be read past the message buffer and the retransmission overwrites the internal state the suspended write needs to resume correctly...

CVE-2026-75806

Issue summary: An established DTLS 1.2 association using an AEAD cipher suite can be terminated by a single unauthenticated datagram whose encrypted fragment is shorter than the mandatory explicit IV and authentication tag overhead. Impact summary: An attacker who can send a datagram that is rout...

dtls-fuzzer

dtls-fuzzer 是一个Java工具，用于对DTLS服务器执行协议状态模糊测试。具体而言，它支持以下功能： 1. 给定一个字母表，它可以自动生成本地DTLS服务器实现的模型； 2. 给定一个测试（输入序列）和一个字母表，它可以在DTLS服务器实现上执行该测试； 3. 它可以运行批量学习任务，涉及多次学习运行。 dtls-fuzzer 使用 TLS-Attackertlsattacker 来生成/解析DTLS消息以及维护状态。 为此，TLS-Attacker 已扩展了对DTLS的支持。 dtls-fuzzer 依赖于 版本 3.0btlsattackerver 的...

Zero-Day Exploitation of Citrix NetScaler ADC and Gateway: CVE-2026-88771 and CVE-2026-88772

Overview On September 27, 2026, Citrix disclosed eight new vulnerabilities affecting NetScaler ADC and NetScaler Gateway, including two critical remote code execution RCE vulnerabilities: CVE-2026-88771 and CVE-2026-88772. Both of these RCE vulnerabilities carry a critical CVSSv4 score of 9.5, an...

Exploit for CVE-2026-88772

CVE-2026-88772 - Citrix NetScaler ADC/Gateway DTLS memory over...

Linux Distros Unpatched Vulnerability : CVE-2026-89136

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - When using RPK Raw Public Key, the client side of a TLS 1.2, 1.3 and DTLS 1.2 connection could accept an unsolicited servercerttype=RawPublicKey which allowed a...

Citrix NetScaler ADC and Gateway DTLS Vulnerability Scanner

Citrix NetScaler ADC and NetScaler Gateway versions before 14.1-73.37 and 13.1-64.23 contain a DTLS memory overflow vulnerability that may lead to remote code execution or denial of service. This tool fingerprints exposed services, assesses build versions, and optionally sends a DTLS probe...

Linux Distros Unpatched Vulnerability : CVE-2026-94417

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - When an application enables both OCSP and CRL revocation checking on one WOLFSSLCTX or certificate manager, wolfSSL skips the CRL check for any peer certificate...

Linux Distros Unpatched Vulnerability : CVE-2026-93304

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - A DTLS 1.2 client can accept a ChangeCipherSpec message before it has sent its ClientKeyExchange. No master secret has been derived at that point, so the client...