openssl: Multi-RecipientInfo Bleichenbacher Oracle in CMS_decrypt() and PKCS7_decrypt()

A flaw was found in OpenSSL's CMSdecrypt and PKCS7decrypt functions. This vulnerability, a Bleichenbacher-style oracle, could allow a remote attacker to decrypt or sign messages using the victim's private RSA key. Exploitation requires the attacker to provide specially crafted CMS or S/MIME...

Linux Distros Unpatched Vulnerability : CVE-2026-42768

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - Issue summary: The CMSdecrypt and PKCS7decrypt functions are vulnerable to Bleichenbacher-style attack when an attacker is able to provide the CMS or S/MIME...

EUVD-2026-35475

Issue summary: When CMS password-based decryption RFC 3211 / PWRI key unwrap processes attacker-supplied CMS data, an attacker-chosen stream-mode KEK cipher can trigger a heap out-of-bounds read in kekunwrapkey. Impact summary: A heap buffer over-read may trigger a crash which leads to Denial of...

EUVD-2026-35485

Issue summary: The CMSdecrypt and PKCS7decrypt functions are vulnerable to Bleichenbacher-style attack when an attacker is able to provide the CMS or S/MIME messages and observe the error code and/or decryption output. Impact summary: The Bleichenbacher-style attack allows an attacker to use the...

ALPINE-CVE-2026-42768

Issue summary: The CMSdecrypt and PKCS7decrypt functions are vulnerable to Bleichenbacher-style attack when an attacker is able to provide the CMS or S/MIME messages and observe the error code and/or decryption output. Impact summary: The Bleichenbacher-style attack allows an attacker to use the...

CVE-2026-42768

Issue summary: The CMSdecrypt and PKCS7decrypt functions are vulnerable to Bleichenbacher-style attack when an attacker is able to provide the CMS or S/MIME messages and observe the error code and/or decryption output. Impact summary: The Bleichenbacher-style attack allows an attacker to use the...

UBUNTU-CVE-2026-42768

Issue summary: The CMSdecrypt and PKCS7decrypt functions are vulnerable to Bleichenbacher-style attack when an attacker is able to provide the CMS or S/MIME messages and observe the error code and/or decryption output. Impact summary: The Bleichenbacher-style attack allows an attacker to use the...

OpenSSL 4.0.0 < 4.0.1 Multiple Vulnerabilities

The version of OpenSSL installed on the remote host is prior to 4.0.1. It is, therefore, affected by multiple vulnerabilities as referenced in the 4.0.1 advisory. - Issue summary: A specially crafted PKCS7 or S/MIME signed message could trigger a use-after-free during PKCS7 signature verification...

CLSA-2026-1777566580 openssl: Fix of CVE-2026-28390

CVE-2026-28390: fix NULL pointer dereference in rsacmsdecrypt when CMS RSA-OAEP pSourceFunc is missing its parameter...

CLSA-2026-1777567430 openssl: Fix of CVE-2026-28390

CVE-2026-28390: fix NULL pointer dereference in rsacmsdecrypt when CMS RSA-OAEP pSourceFunc is missing its parameter...

CLSA-2026-1777567181 openssl: Fix of CVE-2026-28390

CVE-2026-28390: fix NULL pointer dereference in rsacmsdecrypt when CMS RSA-OAEP pSourceFunc is missing its parameter...

CLSA-2026-1777397374 Fix CVE(s): CVE-2026-28390

SECURITY UPDATE: A NULL pointer dereference in rsacmsdecrypt when processing CMS messages with RSA-OAEP encryption where pSourceFunc is present but its parameters field is absent can trigger a crash, leading to Denial of Service. - debian/patches/CVE-2026-28390.patch: use X509ALGORget0 and...

NULL Pointer Dereference

Overview Affected versions of this package are vulnerable to NULL Pointer Dereference in the CMSdecrypt function. An attacker can cause a crash by submitting a specially crafted CMS EnvelopedData message with a missing optional parameters field in the KeyEncryptionAlgorithmIdentifier, leading to ...

NULL Pointer Dereference

Overview Affected versions of this package are vulnerable to NULL Pointer Dereference in the CMSdecrypt function. An attacker can cause a crash by submitting a crafted CMS EnvelopedData message with a missing optional parameters field in the RSA-OAEP SourceFunc algorithm identifier. Notes: - This...

CVE-2026-28390

Issue summary: During processing of a crafted CMS EnvelopedData message with KeyTransportRecipientInfo a NULL pointer dereference can happen. Impact summary: Applications that process attacker-controlled CMS data may crash before authentication or cryptographic operations occur resulting in Denia...

CVE-2026-28389

Issue summary: During processing of a crafted CMS EnvelopedData message with KeyAgreeRecipientInfo a NULL pointer dereference can happen. Impact summary: Applications that process attacker-controlled CMS data may crash before authentication or cryptographic operations occur resulting in Denial of...

MiracleLinux 8 : openssl-1.1.1c-15.el8 (AXSA:2020-289:02)

The remote MiracleLinux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the AXSA:2020-289:02 advisory. openssl: side-channel weak encryption vulnerability CVE-2019-1547 openssl: information disclosure in fork CVE-2019-1549 openssl: information disclosu...

MiracleLinux 7 : openssl-1.0.2k-26.0.4.el7.AXS7 (AXSA:2025-10514:03)

The remote MiracleLinux 7 host has packages installed that are affected by a vulnerability as referenced in the AXSA:2025-10514:03 advisory. CVE-2019-1563: fix information disclosure in PKCS7dataDecode and CMSdecryptset1pkey CVEs: CVE-2019-1563 In situations where an attacker receives automated...

CLSA-2025-1751271968 openssl: Fix of CVE-2019-1563

CVE-2019-1563: fix information disclosure in PKCS7dataDecode and CMSdecryptset1pkey...