CVE-2026-50252

In NLnet Labs Unbound 1.4.22 up to and including 1.25.1, the UDP source port is used as a secrecy element to increase DNS transaction entropy. When SO_REUSEPORT is enabled (default) and load balancing depends on the source port and IP address, this secrecy can be undermined. On startup Unbound pa...

CVE-2026-50252 Possible cache poisoning attack by mapping source port population per thread

In NLnet Labs Unbound 1.4.22 up to and including 1.25.1, UDP source port is randomized and intended to serve as a secret value that increases the entropy of DNS transactions. When resolver load balancing policies depend on the source port while their outcome is revealed this secrecy is undermined...

CVE-2026-50252

In NLnet Labs Unbound 1.4.22 up to and including 1.25.1, UDP source port is randomized and intended to serve as a secret value that increases the entropy of DNS transactions. When resolver load balancing policies depend on the source port while their outcome is revealed this secrecy is undermined...

PT-2026-63384

Name of the Vulnerable Software and Affected Versions NLnet Labs Unbound versions 1.4.22 through 1.25.1 Description An issue exists where the secrecy of the randomized UDP source port, used to increase entropy in DNS transactions, is undermined when resolver load balancing policies depend on the...

Astra Linux – Vulnerability in Linux, Linux 5.10

A flaw in the processing of received ICMP errors such as ICMP fragments and ICMP redirections within the Linux kernel’s functionality was identified. This flaw allows an off-path remote user to quickly scan open UDP ports. This vulnerability enables a remote user to bypass the UDP source port...

SUSE CVE-2026-28810

Generation of Predictable Numbers or Identifiers vulnerability in Erlang/OTP kernel inetres, inetdb modules allows DNS Cache Poisoning. The built-in DNS resolver inetres uses a sequential, process-global 16-bit transaction ID for UDP queries and does not implement source port randomization...

UBUNTU-CVE-2026-28810

Generation of Predictable Numbers or Identifiers vulnerability in Erlang/OTP kernel inetres, inetdb modules allows DNS Cache Poisoning. The built-in DNS resolver inetres uses a sequential, process-global 16-bit transaction ID for UDP queries and does not implement source port randomization...

EUVD-2026-19582

Generation of Predictable Numbers or Identifiers vulnerability in Erlang/OTP kernel inetres, inetdb modules allows DNS Cache Poisoning. The built-in DNS resolver inetres uses a sequential, process-global 16-bit transaction ID for UDP queries and does not implement source port randomization...

CVE-2026-28810 Predictable DNS Transaction IDs Enable Cache Poisoning in Built-in Resolver

Generation of Predictable Numbers or Identifiers vulnerability in Erlang/OTP kernel inetres, inetdb modules allows DNS Cache Poisoning. The built-in DNS resolver inetres uses a sequential, process-global 16-bit transaction ID for UDP queries and does not implement source port randomization...

CVE-2026-28810 Predictable DNS Transaction IDs Enable Cache Poisoning in Built-in Resolver

Generation of Predictable Numbers or Identifiers vulnerability in Erlang/OTP kernel inetres, inetdb modules allows DNS Cache Poisoning. The built-in DNS resolver inetres uses a sequential, process-global 16-bit transaction ID for UDP queries and does not implement source port randomization...

CVE-2026-28810

Generation of Predictable Numbers or Identifiers vulnerability in Erlang/OTP kernel inetres, inetdb modules allows DNS Cache Poisoning. The built-in DNS resolver inetres uses a sequential, process-global 16-bit transaction ID for UDP queries and does not implement source port randomization...

PT-2026-30803

Name of the Vulnerable Software and Affected Versions Erlang/OTP versions 17.0 through 28.4.2, 27.3.4.10 and 26.2.5.19 Description A predictable number generation issue in the Erlang/OTP kernel's inet res and inet db modules allows for DNS cache poisoning. The built-in DNS resolver uses a...

CVE-2021-27393

A vulnerability has been identified in Nucleus NET All versions, Nucleus ReadyStart V3 All versions V2013.08, Nucleus Source Code Versions including affected DNS modules. The DNS client does not properly randomize UDP port numbers of DNS requests. That could allow an attacker to poison the DNS...

CVE-2026-23247

In the Linux kernel, the following vulnerability has been resolved: tcp: secureseq: add back ports to TS offset This reverts 28ee1b746f49 "secureseq: downgrade to per-host timestamp offsets" tcptwrecycle went away in 2017. Zhouyan Deng reported off-path TCP source port leakage via SYN cookie...

MiracleLinux 8 : java-17-openjdk-17.0.5.0.8-2.el8 (AXSA:2022-3905:06)

The remote MiracleLinux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the AXSA:2022-3905:06 advisory. OpenJDK: improper MultiByte conversion can lead to buffer overflow JGSS, 8286077 CVE-2022-21618 OpenJDK: excessive memory allocation in X.509...

MiracleLinux 9 : java-1.8.0-openjdk-1.8.0.352.b08-2.el9 (AXSA:2022-4205:15)

The remote MiracleLinux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the AXSA:2022-4205:15 advisory. OpenJDK: excessive memory allocation in X.509 certificate parsing Security, 8286533 CVE-2022-21626 OpenJDK: HttpServer no connection count limit...

MiracleLinux 7 : java-11-openjdk-11.0.17.0.8-2.el7 (AXSA:2022-3906:14)

The remote MiracleLinux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the AXSA:2022-3906:14 advisory. OpenJDK: improper MultiByte conversion can lead to buffer overflow JGSS, 8286077 CVE-2022-21618 OpenJDK: excessive memory allocation in X.509...

MiracleLinux 9 : java-17-openjdk-17.0.5.0.8-2.el9 (AXSA:2022-4116:10)

The remote MiracleLinux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the AXSA:2022-4116:10 advisory. OpenJDK: improper MultiByte conversion can lead to buffer overflow JGSS, 8286077 CVE-2022-21618 OpenJDK: excessive memory allocation in X.509...

Unity Linux 20.1070e Security Update: kernel (UTSA-2026-001372)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-001372 advisory. A flaw in ICMP packets in the Linux kernel may allow an attacker to quickly scan open UDP ports. This flaw allows an off-path remote attacker to effectively bypass...

Unity Linux 20.1070e Security Update: kernel (UTSA-2026-001466)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-001466 advisory. A flaw in the processing of received ICMP errors ICMP fragment needed and ICMP redirect in the Linux kernel functionality was found to allow the ability to quickly...