CVE-2026-20127

CVE-2026-20127 Обзор Эксплойт для уязвимости обхода аутентификации Cisco Catalyst SD-WAN Controller, CVE-2026-20127. Данный эксплойт нацелен на обработчик vbondprocchallengeackack. Он отправляет поддельное сообщение CHALLENGEACKACK msgtype=10 с контролируемым атакующим байтом verifystatus=1,...

OpenSSL_DTLS_CVE_2014_0221

OpenSSLDTLSCVE20140221 OpenSSL DTLS CVE-2014-0221 Удаленный отказ в обслуживании Что такое DTLS Datagram Transport Layer Security? Безопасность транспортного уровня на основе датаграмм. Физический уровень Поддержка датаграмм на уровне TCP : TLS Поддержка датаграмм на уровне UDP : DTLS : через...

AlmaLinux 9.6 [TuxCare] Security Update: gnutls / gnutls-c++ / gnutls-dane / gnutls-devel / gnutls-utils Multiple Vulnerabilities (ALMALINUX9.6:CLSA-2026:1780484200)

The AlmaLinux 9.6 host has packages installed that are affected by multiple vulnerabilities as referenced in the TuxCare ALMALINUX9.6:CLSA-2026:1780484200 advisory. - A heap buffer overflow vulnerability exists in the DTLS handshake fragment reassembly logic of GnuTLS. The issue arises in...

CentOS Linux 8 [TuxCare] Security Update: gnutls / gnutls-c++ / gnutls-dane / gnutls-devel / gnutls-utils Multiple Vulnerabilities (CENTOS-STREAM8:CLSA-2026:1780389355)

The CentOS Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the TuxCare CENTOS-STREAM8:CLSA-2026:1780389355 advisory. - A heap buffer overflow vulnerability exists in the DTLS handshake fragment reassembly logic of GnuTLS. The issue arises in...

Rocky Linux 8 [CIQ] Security Update: gnutls / gnutls-c++ / gnutls-c++-debuginfo / gnutls-dane / etc Multiple Vulnerabilities (crlsa-2026_20611)

The Rocky Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the CIQ crlsa-202620611 advisory. gnutls: Add more checks to DTLS reassembly CVE-2026-33846 gnutls: Fix qsort comparator in DTLS reassembly CVE-2026-42009 gnutls: Fix crashing on an...

AlmaLinux 9.2 [TuxCare] Security Update: gnutls / gnutls-c++ / gnutls-dane / gnutls-devel / gnutls-utils (ALMALINUX9.2:CLSA-2026:1778762233)

The AlmaLinux 9.2 host has packages installed that are affected by a vulnerability as referenced in the TuxCare ALMALINUX9.2:CLSA-2026:1778762233 advisory. - A flaw in GnuTLS DTLS handshake parsing allows malformed fragments with zero length and non-zero offset, leading to an integer underflow...

AlmaLinux 9.6 [TuxCare] Security Update: openssl / openssl-devel / openssl-libs / openssl-perl Multiple Vulnerabilities (ALMALINUX9.6:CLSA-2026:1788339545)

The AlmaLinux 9.6 host has packages installed that are affected by multiple vulnerabilities as referenced in the TuxCare ALMALINUX9.6:CLSA-2026:1788339545 advisory. - Issue summary: Receiving a DTLS record for a future epoch while a handshake is in progress causes OpenSSL to buffer far more memor...

CentOS Linux 7 [TuxCare] Security Update: openssl11 / openssl11-devel / openssl11-libs / openssl11-static (CENTOS7:CLSA-2026:1789604584)

The CentOS Linux 7 host has packages installed that are affected by a vulnerability as referenced in the TuxCare CENTOS7:CLSA-2026:1789604584 advisory. - 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...

AlmaLinux 9.2 [TuxCare] Security Update: gstreamer1-plugins-bad-free / gstreamer1-plugins-bad-free-devel Multiple Vulnerabilities (ALMALINUX9.2:CLSA-2026:1790239010)

The AlmaLinux 9.2 host has packages installed that are affected by multiple vulnerabilities as referenced in the TuxCare ALMALINUX9.2:CLSA-2026:1790239010 advisory. - A heap buffer overflow vulnerability was found in GStreamer's rfbsrc plugin. When a client connects to a malicious RFB/VNC server...

Rocky Linux 8 [CIQ] Security Update: java-17-openjdk / java-17-openjdk-debuginfo / etc Multiple Vulnerabilities (crlsa-2023_0192)

The Rocky Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the CIQ crlsa-20230192 advisory. OpenJDK: handshake DoS attack against DTLS connections JSSE, 8287411 CVE-2023-21835 OpenJDK: soundbank URL remote loading Sound, 8293742 CVE-2023-21843...

CentOS Linux 7 [TuxCare] Security Update: openssl / openssl-devel / openssl-libs / openssl-perl / etc (CENTOS7:CLSA-2026:1788264233)

The CentOS Linux 7 host has packages installed that are affected by a vulnerability as referenced in the TuxCare CENTOS7:CLSA-2026:1788264233 advisory. - 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...

Rocky Linux 9 [CIQ] Security Update: gnutls / gnutls-c++ / gnutls-c++-debuginfo / gnutls-dane / etc Multiple Vulnerabilities (crlsa-2026_20612)

The Rocky Linux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the CIQ crlsa-202620612 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-PS...

CentOS Linux 8.5 [TuxCare] Security Update: gnutls / gnutls-c++ / gnutls-dane / gnutls-devel / gnutls-utils (CENTOS8.5:CLSA-2026:1778172299)

The CentOS Linux 8.5 host has packages installed that are affected by a vulnerability as referenced in the TuxCare CENTOS8.5:CLSA-2026:1778172299 advisory. - A flaw in GnuTLS DTLS handshake parsing allows malformed fragments with zero length and non-zero offset, leading to an integer underflow...

Rocky Linux 9.6 [TuxCare] Security Update: openssl / openssl-devel / openssl-libs / openssl-perl Multiple Vulnerabilities (ALMALINUX9.6:CLSA-2026:1788339545)

The Rocky Linux 9.6 host has packages installed that are affected by multiple vulnerabilities as referenced in the TuxCare ALMALINUX9.6:CLSA-2026:1788339545 advisory. - Issue summary: Receiving a DTLS record for a future epoch while a handshake is in progress causes OpenSSL to buffer far more...

openssl: compat-openssl: openssl: Information disclosure via DTLS handshake retransmission

A flaw was found in OpenSSL. The Datagram Transport Layer Security DTLS retransmission mechanism fails to properly handle handshake message writes that are suspended before completion. A remote attacker could exploit this vulnerability during handshake message retransmission, causing OpenSSL to...

openssl: OpenSSL: Denial of Service via undersized DTLS record

A flaw was found in OpenSSL. A remote, unauthenticated attacker can cause a Denial of Service DoS by terminating an active Datagram Transport Layer Security DTLS session. By sending an undersized network packet that is shorter than the expected cryptographic overhead, the record processing layer...

openssl: OpenSSL: Denial of Service via undersized DTLS record

A flaw was found in OpenSSL. A remote, unauthenticated attacker can cause a Denial of Service DoS by terminating an active Datagram Transport Layer Security DTLS session. By sending an undersized network packet that is shorter than the expected cryptographic overhead, the record processing layer...

openssl: compat-openssl: openssl: Information disclosure via DTLS handshake retransmission

A flaw was found in OpenSSL. The Datagram Transport Layer Security DTLS retransmission mechanism fails to properly handle handshake message writes that are suspended before completion. A remote attacker could exploit this vulnerability during handshake message retransmission, causing OpenSSL to...

Vulnerabilities in NetScaler ADC and NetScaler Gateway

Citrix has identified 8 vulnerabilities in NetScaler ADC and NetScaler Gateway. The following supported versions of Citrix NetScaler ADC and Citrix NetScaler Gateway are vulnerable: - Citrix NetScaler ADC and Citrix NetScaler Gateway 14.1 before version 14.1-73.37 - Citrix NetScaler ADC and Citri...

Attackers Exploit NetScaler Flaw for Root Access, Deploy WHIPSHOT and SLAPSHOT

Unknown threat actors have been observed exploiting a newly patched security flaw in Citrix NetScaler ADC and NetScaler Gateway appliances to target organizations in North America and Europe. The activity, observed by Mandiant Consulting and Google Threat Intelligence Group GTIG in September 2026...