CVE-2026-63573 Bleichenbacher padding oracle in CMS RSA PKCS#1 v1.5 key-transport unwrap

Observable discrepancy in the CMS RSA PKCS1 v1.5 key-transport unwrap KeyTransRecipientInformation.UnwrapKey in Legion of the Bouncy Castle Inc. bc-csharp before 2.7.0 allows a remote attacker who holds a captured CMS EnvelopedData message, and who can submit many modified messages to an...

CVE-2026-63573 Bleichenbacher padding oracle in CMS RSA PKCS#1 v1.5 key-transport unwrap

Observable discrepancy in the CMS RSA PKCS1 v1.5 key-transport unwrap KeyTransRecipientInformation.UnwrapKey in Legion of the Bouncy Castle Inc. bc-csharp before 2.7.0 allows a remote attacker who holds a captured CMS EnvelopedData message, and who can submit many modified messages to an...

CVE-2026-63567 IesEngine block-cipher mode checks padding before MAC (CBC padding oracle)

Observable discrepancy in IesEngine.DecryptBlock in Legion of the Bouncy Castle Inc. bc-csharp before 2.7.0 allows a remote attacker who has captured an IES or ECIES ciphertext, and who can submit modified ciphertexts for decryption under the same key pair, to recover its plaintext via a CBC...

CVE-2026-63567 IesEngine block-cipher mode checks padding before MAC (CBC padding oracle)

Observable discrepancy in IesEngine.DecryptBlock in Legion of the Bouncy Castle Inc. bc-csharp before 2.7.0 allows a remote attacker who has captured an IES or ECIES ciphertext, and who can submit modified ciphertexts for decryption under the same key pair, to recover its plaintext via a CBC...

CVE-2026-63567

The bc-csharp library by Bouncy Castle Inc. is vulnerable in versions before 2.7.0 due to an observable discrepancy in IesEngine.DecryptBlock. In block-cipher mode, the engine decrypts the ciphertext and removes padding before verifying the MAC. This allows a remote attacker to perform a CBC padd...

CVE-2026-63567 IesEngine block-cipher mode checks padding before MAC (CBC padding oracle)

Observable discrepancy in IesEngine.DecryptBlock in Legion of the Bouncy Castle Inc. bc-csharp before 2.7.0 allows a remote attacker who has captured an IES or ECIES ciphertext, and who can submit modified ciphertexts for decryption under the same key pair, to recover its plaintext via a CBC...

EUVD-2026-91218

Observable discrepancy in IesEngine.DecryptBlock in Legion of the Bouncy Castle Inc. bc-csharp before 2.7.0 allows a remote attacker who has captured an IES or ECIES ciphertext, and who can submit modified ciphertexts for decryption under the same key pair, to recover its plaintext via a CBC...

PT-2026-104105

Observable discrepancy in IesEngine.DecryptBlock in Legion of the Bouncy Castle Inc. bc-csharp before 2.7.0 allows a remote attacker who has captured an IES or ECIES ciphertext, and who can submit modified ciphertexts for decryption under the same key pair, to recover its plaintext via a CBC...

CVE-2026-63567: Observable Discrepancy

Observable discrepancy in IesEngine.DecryptBlock in Legion of the Bouncy Castle Inc. bc-csharp before 2.7.0 allows a remote attacker who has captured an IES or ECIES ciphertext, and who can submit modified ciphertexts for decryption under the same key pair, to recover its plaintext via a CBC...

Rocky Linux 10.2 [CIQ] Security Update: tomcat / tomcat-admin-webapps / tomcat-docs-webapp / etc Multiple Vulnerabilities (crlsa-2026_36788)

The Rocky Linux 10.2 host has packages installed that are affected by multiple vulnerabilities as referenced in the CIQ crlsa-202636788 advisory. Apache Tomcat: Apache Tomcat: Information disclosure via Padding Oracle vulnerability in EncryptInterceptor CVE-2026-29146 Apache Tomcat: Apache Tomcat...

Rocky Linux 8 [CIQ] Security Update: tomcat / tomcat-admin-webapps / tomcat-docs-webapp / etc Multiple Vulnerabilities (crlsa-2026_37137)

The Rocky Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the CIQ crlsa-202637137 advisory. Apache Tomcat: Apache Tomcat: Information disclosure via Padding Oracle vulnerability in EncryptInterceptor CVE-2026-29146 Apache Tomcat: Apache Tomcat:...

AlmaLinux 9.6 [TuxCare] Security Update: tomcat / tomcat-admin-webapps / tomcat-docs-webapp / etc Multiple Vulnerabilities (ALMALINUX9.6:CLSA-2026:1781108520)

The AlmaLinux 9.6 host has packages installed that are affected by multiple vulnerabilities as referenced in the TuxCare ALMALINUX9.6:CLSA-2026:1781108520 advisory. - Padding Oracle vulnerability in Apache Tomcat's EncryptInterceptor with default configuration. This issue affects Apache Tomcat:...

Rocky Linux 10.2 [CIQ] Security Update: tomcat9 / tomcat9-admin-webapps / tomcat9-docs-webapp / etc Multiple Vulnerabilities (crlsa-2026_36790)

The Rocky Linux 10.2 host has packages installed that are affected by multiple vulnerabilities as referenced in the CIQ crlsa-202636790 advisory. Apache Tomcat: Apache Tomcat: Information disclosure via Padding Oracle vulnerability in EncryptInterceptor CVE-2026-29146 Apache Tomcat: Apache Tomcat...

Rocky Linux 9.6 [TuxCare] Security Update: tomcat / tomcat-admin-webapps / tomcat-docs-webapp / etc Multiple Vulnerabilities (ALMALINUX9.6:CLSA-2026:1781108520)

The Rocky Linux 9.6 host has packages installed that are affected by multiple vulnerabilities as referenced in the TuxCare ALMALINUX9.6:CLSA-2026:1781108520 advisory. - Padding Oracle vulnerability in Apache Tomcat's EncryptInterceptor with default configuration. This issue affects Apache Tomcat:...

Rocky Linux 9 [CIQ] Security Update: tomcat / tomcat-admin-webapps / tomcat-docs-webapp / etc Multiple Vulnerabilities (crlsa-2026_36879)

The Rocky Linux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the CIQ crlsa-202636879 advisory. Apache Tomcat: Apache Tomcat: Information disclosure via Padding Oracle vulnerability in EncryptInterceptor CVE-2026-29146 Apache Tomcat: Apache Tomcat:...

AlmaLinux 9.2 [TuxCare] Security Update: tomcat / tomcat-admin-webapps / tomcat-docs-webapp / etc Multiple Vulnerabilities (ALMALINUX9.2:CLSA-2026:1780997466)

The AlmaLinux 9.2 host has packages installed that are affected by multiple vulnerabilities as referenced in the TuxCare ALMALINUX9.2:CLSA-2026:1780997466 advisory. - Session Fixation vulnerability in Apache Tomcat via rewrite valve. This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.7...

CentOS Linux 7 [TuxCare] Security Update: openssl / openssl-devel / openssl-libs / openssl-perl / etc (CENTOS7:CLSA-2025:1751271968)

The CentOS Linux 7 host has packages installed that are affected by a vulnerability as referenced in the TuxCare CENTOS7:CLSA-2025:1751271968 advisory. - In situations where an attacker receives automated notification of the success or failure of a decryption attempt an attacker, after sending a...

CentOS Linux 7 [TuxCare] Security Update: nettle / nettle-devel (CENTOS7:CLSA-2024:1709839956)

The CentOS Linux 7 host has packages installed that are affected by a vulnerability as referenced in the TuxCare CENTOS7:CLSA-2024:1709839956 advisory. - A Bleichenbacher type side-channel based padding oracle attack was found in the way nettle handles endian conversion of RSA decrypted PKCS1 v1....

Multiple Apache Tomcat vulnerabilities

Moderate: Apache Tomcat: Fix for CVE-2025-66614 is incomplete CVE-2026-32990 The validation of SNI name and host name did not take account of possible differences in case allowing the strict SNI checks to be bypassed. Important: Apache Tomcat: EncryptInterceptor vulnerable to padding oracle attac...

EUVD-2026-80067

An unauthenticated user with access to Secret Server could leverage a padding oracle to decrypt or encrypt data using one of the server's cryptographic keys. The key itself is not exposed...