The vulnerabilities of the functions pkcs7_decrypt_smime(), pkcs7_decrypt_pem(), and pkcs7_decrypt_der in the Python programming language-based cryptography library allow attackers to compromise the confidentiality of protected information.

The vulnerabilities of the functions pkcs7decryptsmime, pkcs7decryptpem, and pkcs7decryptder in the Python programming language-based cryptography library are related to deficiencies in the error reporting mechanism. Exploiting these vulnerabilities could allow an attacker to influence the...

Timing Attack

Overview Affected versions of this package are vulnerable to Timing Attack in the pkcs7decryptder, pkcs7decryptpem, and pkcs7decryptsmime functions. An attacker can obtain sensitive information about the outcome of RSA decryption operations by submitting crafted EnvelopedData and analyzing error...

OESA-2026-3004 edk2 security update

EDK II is a modern, feature-rich, cross-platform firmware development environment for the UEFI and PI specifications. Security Fixes: Issue summary: A specially crafted password-encrypted CMS message can trigger a NULL pointer dereference during CMS decryption. Impact summary: This NULL pointer...

MGASA-2026-0253 Updated openssl packages fix security vulnerabilities

The updated packages fix security vulnerabilities: Possible Heap Buffer Overflow in ASN.1 Multibyte String Conversion. CVE-2026-7383 Out-of-Bounds Read in CMS Password-Based Decryption. CVE-2026-9076 Heap Buffer Over-read in ASN.1 Content Parsing. CVE-2026-34180 PKCS12 Files with PBMAC1 Are...

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...

ALSA-2026:25239 Important: openssl security update

OpenSSL is a toolkit that implements the Secure Sockets Layer SSL and Transport Layer Security TLS protocols, as well as a full-strength general-purpose cryptography library. Security Fixes: openssl: OpenSSL: Heap buffer overflow due to signed integer overflow in Unicode output sizing CVE-2026-73...

Important: openssl security update

OpenSSL is a toolkit that implements the Secure Sockets Layer SSL and Transport Layer Security TLS protocols, as well as a full-strength general-purpose cryptography library. Security Fixes: openssl: OpenSSL: Heap buffer overflow due to signed integer overflow in Unicode output sizing CVE-2026-73...

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-2026-35485

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...

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...

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...