CVE-2026-18151 IBM i is Affected By Multiple Vulnerabilities in Navigator for i and Digital Certificate Manager for i.

IBM i 7.6, 7.5, 7.4, and 7.3 could allow a remote authenticated attacker to obtain sensitive information due to a race condition during the WebSocket handshake process...

CVE-2026-18151 IBM i is Affected By Multiple Vulnerabilities in Navigator for i and Digital Certificate Manager for i.

IBM i 7.6, 7.5, 7.4, and 7.3 could allow a remote authenticated attacker to obtain sensitive information due to a race condition during the WebSocket handshake process...

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...

OESA-2026-3829 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...

OESA-2026-3826 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...

CVE-2026-59638

A flaw was found in Bouncy Castle for Java. The Java Secure Socket Extension JSSE hostname verifier incorrectly enables the Common Name CN fallback by default, despite it being documented as an opt-in feature. This misconfiguration could allow a remote attacker to bypass proper hostname validatio...

Astra Linux – Vulnerability in gnutls28

A issue was discovered in GnuTLS before version 3.6.15. A server can cause a NULL pointer dereferencing in a TLS 1.3 client if a norenegotiation alert is sent at an unexpected time, resulting in an invalid second handshake. The crash occurs during the application’s error handling process, where t...

Astra Linux – Vulnerability in Golang-1.19

Extremely large RSA keys in certificate chains can cause clients and servers to spend significant CPU time verifying signatures. With this fix, the size of RSA keys transmitted during handshake operations is limited to 8192 bits or less. Based on a survey of publicly trusted RSA keys, there are...

Astra Linux – Vulnerability in Linux 5.10, Linux, Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: sctp: Check the send stream number after waitforsndbuf This patch addresses a corner case where the number of out streams may change after waitforsndbuf is called. When the main thread in the client initiates a connection, if the...

Astra Linux – Vulnerability in Tomcat9

The “Allocation of Resources Without Limits or Throttling” vulnerability in Apache Tomcat exists. This issue affects Apache Tomcat versions from 11.0.0-M1 through 11.0.0-M20, from 10.1.0-M1 through 10.1.24, and from 9.0.13 through 9.0.89. The following versions were already reached their...

Astra Linux – Vulnerabilities in paramiko, libssh, libssh2, erlang, openssh

The SSH transport protocol, with certain OpenSSH extensions, found in OpenSSH versions prior to 9.6 and other products, allows remote attackers to bypass integrity checks. As a result, some packets may be omitted from the extension negotiation message. Consequently, the client and server may end ...

Astra Linux – Vulnerability in Thunderbird

If Thunderbird was configured to use STARTTLS for an IMAP connection, and an attacker injected IMAP server responses before the STARTTLS handshake was completed, then Thunderbird did not ignore the injected data. This could result in Thunderbird displaying incorrect information. For example, the...

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...

Astra Linux – Vulnerabilities in Firefox, Thunderbird, NSS

An unchecked return value in the TLS handshake code could have caused a potentially exploitable crash. This vulnerability affects Firefox 122, Firefox ESR 115.9, and Thunderbird 115.9...

RUSTSEC-2026-0285 TLS 1.3 handshake messages incorrectly accepted across encryption level boundaries

Rustls accepted TLS 1.3 handshake messages sent at the wrong encryption level when they followed a key-changing message in the same record. For example, a plaintext EncryptedExtensions message packed into the same record as the ServerHello was accepted. RFC 8446 section 5.1 requires that handshak...

TLS 1.3 handshake messages incorrectly accepted across encryption level boundaries

Rustls accepted TLS 1.3 handshake messages sent at the wrong encryption level when they followed a key-changing message in the same record. For example, a plaintext EncryptedExtensions message packed into the same record as the ServerHello was accepted. RFC 8446 section 5.1 requires that handshak...

openssl: excessive memory use buffering DTLS records for a future epoch

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...

tomcat: Denial of Service in Tomcat

A vulnerability was found in Tomcat. Under certain configurations on any platform, this flaw allows an attacker to cause an OutOfMemoryError by abusing the TLS handshake process...

PT-2026-91393

IBM i 7.6, 7.5, 7.4, and 7.3 could allow a remote authenticated attacker to obtain sensitive information due to a race condition during the WebSocket handshake process...

Important: openssl

Issue Overview: 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...