CVE-2026-54887

Use of Default Cryptographic Key vulnerability in Erlang/OTP ssl DTLS server allows predictable DTLS cookie computation during the startup window, enabling source address verification bypass. On DTLS server startup, dtlsserverconnection:initialhello/3 initializes previouscookiesecret to the empty...

CVE-2026-55950 DTLS listener crash via race condition in dtls_packet_demux causes denial of service for all sessions

Time-of-check Time-of-use TOCTOU race condition vulnerability in Erlang/OTP ssl dtlspacketdemux module allows an unauthenticated remote attacker to crash all active DTLS sessions on a listener. A DTLS server listener uses a single shared dtlspacketdemux genserver process to route incoming UDP...

CVE-2026-55950

This CVE (CVE-2026-55950) describes a TOCTOU race in Erlang/OTP ssl (dtls_packet_demux.erl) where a DTLS listener’s shared demux process can be crashed by an unauthenticated remote attacker sending rapid ClientHello datagrams from the same source IP/port. The race in the internal gb_trees store l...

CVE-2026-55950 DTLS listener crash via race condition in dtls_packet_demux causes denial of service for all sessions

Time-of-check Time-of-use TOCTOU race condition vulnerability in Erlang/OTP ssl dtlspacketdemux module allows an unauthenticated remote attacker to crash all active DTLS sessions on a listener. A DTLS server listener uses a single shared dtlspacketdemux genserver process to route incoming UDP...

EEF-CVE-2026-54887 DTLS server cookie bypass during startup window due to empty initial cookie secret

Summary Use of Default Cryptographic Key vulnerability in Erlang/OTP ssl DTLS server allows predictable DTLS cookie computation during the startup window, enabling source address verification bypass. On DTLS server startup, dtls\server\connection:initial\hello/3 initializes previous\cookie\secret...

CVE-2026-54887

Use of Default Cryptographic Key vulnerability in Erlang/OTP ssl DTLS server allows predictable DTLS cookie computation during the startup window, enabling source address verification bypass. On DTLS server startup, dtlsserverconnection:initialhello/3 initializes previouscookiesecret to the empty...

CVE-2026-54887 DTLS server cookie bypass during startup window due to empty initial cookie secret

Use of Default Cryptographic Key vulnerability in Erlang/OTP ssl DTLS server allows predictable DTLS cookie computation during the startup window, enabling source address verification bypass. On DTLS server startup, dtlsserverconnection:initialhello/3 initializes previouscookiesecret to the empty...

CVE-2026-54887 DTLS server cookie bypass during startup window due to empty initial cookie secret

Use of Default Cryptographic Key vulnerability in Erlang/OTP ssl DTLS server allows predictable DTLS cookie computation during the startup window, enabling source address verification bypass. On DTLS server startup, dtlsserverconnection:initialhello/3 initializes previouscookiesecret to the empty...

CVE-2026-54887 DTLS server cookie bypass during startup window due to empty initial cookie secret

Use of Default Cryptographic Key vulnerability in Erlang/OTP ssl DTLS server allows predictable DTLS cookie computation during the startup window, enabling source address verification bypass. On DTLS server startup, dtlsserverconnection:initialhello/3 initializes previouscookiesecret to the empty...

CVE-2026-54887

Use of Default Cryptographic Key vulnerability in Erlang/OTP ssl DTLS server allows predictable DTLS cookie computation during the startup window, enabling source address verification bypass. On DTLS server startup, dtlsserverconnection:initialhello/3 initializes previouscookiesecret to the empty...

curl: libcurl: curl/libcurl: Remote denial of service via QUIC UDP receive function vulnerability

A flaw was found in curl and libcurl. A malicious HTTP/3 server can exploit an issue in the QUIC UDP receive function by continuously streaming empty UDP datagrams. This can lead to a remote denial of service DoS against a curl or libcurl client, as the helper function discards zero-length UDP...

kernel: kernel: ipv6 frag escape

A flaw was found in the Linux kernel's ipv6 networking subsystem. An incorrect parameter length calculation allows an attacker with permissions to create UDP sockets to trigger overwrites of kernel memory, potentially leading to privilege escalation, data corruption, or a system crash...

kernel: kernel: ipv6 frag escape

A flaw was found in the Linux kernel's ipv6 networking subsystem. An incorrect parameter length calculation allows an attacker with permissions to create UDP sockets to trigger overwrites of kernel memory, potentially leading to privilege escalation, data corruption, or a system crash...

AlmaLinux 9 : gnutls (ALSA-2026:20612)

The remote AlmaLinux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the ALSA-2026:20612 advisory. gnutls: Fix qsort comparator in DTLS reassembly CVE-2026-42009 gnutls: Fix crashing on an underflow with a DTLS datagram CVE-2026-33845 gnutls: Fix RSA-P...

PT-2026-55282

Name of the Vulnerable Software and Affected Versions Eclipse Wakaama versions prior to snapshot/2026-05-26 Description An unbounded memory allocation issue exists in the CoAP Block1 handler within the coap/block.c file. Unauthenticated remote attackers can cause a denial of service by sending a...

PT-2026-55269

Name of the Vulnerable Software and Affected Versions Erlang/OTP versions 20.0 through 29.0.2 Erlang/OTP versions 28.0 through 28.5.0.2 Erlang/OTP versions 27.0 through 27.3.4.13 ssl versions 8.2 through 11.7.2 ssl versions 11.6.0 through 11.6.0.2 ssl versions 11.2.0 through 11.2.12.9 Description...

CVE-2026-53355

A flaw was found in the Linux kernel's Reliable Datagram Sockets RDS over InfiniBand IB connection teardown process. When the rdsibsetupqp function fails to set up a connection, it may free a memory allocation isends without properly clearing the associated pointer. This can lead to a stale point...

CVE-2026-54908

CVE-2026-54908 affects the Pion DTLS Go implementation. Versions prior to 3.1.4 are vulnerable to a remote Denial of Service caused by a panic while parsing a crafted ECDHE_PSK ServerKeyExchange message. The issue has been fixed in 3.1.4. No exploitation details are provided in the documents.

CVE-2026-54908 Pion DTLS: Denial of service via panic while parsing a crafted ECDHE_PSK ServerKeyExchange message

Pion DTLS is a Go implementation of Datagram Transport Layer Security. Versions prior to 3.1.4 are vulnerable to Remote Denial of Service via panic while parsing a crafted ECDHEPSK ServerKeyExchange message. This issue has been fixed in version 3.1.4...

gnutls: gnutls: Denial of Service via DTLS packet reordering vulnerability

A flaw was found in gnutls. A remote attacker could exploit an issue in the Datagram Transport Layer Security DTLS packet reordering logic. The comparator function, responsible for ordering DTLS packets by sequence numbers, did not correctly handle packets with duplicate sequence numbers. This...