CVE-2026-110310

A remote user who can read encrypted objects in the S3 bucket can force a padding downgrade by altering the padding scheme recorded in an object's metadata to legacy PKCS1 v1.5. Since this padding scheme is susceptible to the well-known Bleichenbacher attack, the user can use a PKCS1 v1.5 padding...

EUVD-2026-101618

A remote user who can read encrypted objects in the S3 bucket can force a padding downgrade by altering the padding scheme recorded in an object's metadata to legacy PKCS1 v1.5. Since this padding scheme is susceptible to the well-known Bleichenbacher attack, the user can use a PKCS1 v1.5 padding...

CVE-2026-110310

The Amazon S3 Encryption Client for .NET is vulnerable to an RSA PKCS#1 v1.5 padding oracle attack. A remote user capable of reading encrypted objects in an S3 bucket can force a padding downgrade by modifying an object's metadata to use the legacy PKCS#1 v1.5 scheme. This vulnerability allows th...

CVE-2026-110310 RSA PKCS#1 v1.5 padding oracle via legacy envelope key format downgrade in Amazon S3 Encryption Client for .NET

A remote user who can read encrypted objects in the S3 bucket can force a padding downgrade by altering the padding scheme recorded in an object's metadata to legacy PKCS1 v1.5. Since this padding scheme is susceptible to the well-known Bleichenbacher attack, the user can use a PKCS1 v1.5 padding...

CVE-2026-110310 RSA PKCS#1 v1.5 padding oracle via legacy envelope key format downgrade in Amazon S3 Encryption Client for .NET

A remote user who can read encrypted objects in the S3 bucket can force a padding downgrade by altering the padding scheme recorded in an object's metadata to legacy PKCS1 v1.5. Since this padding scheme is susceptible to the well-known Bleichenbacher attack, the user can use a PKCS1 v1.5 padding...

PT-2026-114031

Name of the Vulnerable Software and Affected Versions S3 .NET Encryption Client versions prior to 3.2.2 S3 .NET Encryption Client versions prior to 4.0.3 Description A padding oracle flaw exists in the S3 .NET Encryption Client. A remote user with read access to encrypted objects in an S3 bucket...

Cisco ASA/FTD Observable Discrepancy (CVE-2020-3585)

A vulnerability in the TLS handler of Cisco Adaptive Security Appliance ASA Software and Cisco Firepower Threat Defense FTD Software for Cisco Firepower 1000 Series firewalls could allow an unauthenticated, remote attacker to gain access to sensitive information. The vulnerability is due to...

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...

AlmaLinux 9.6 [TuxCare] Security Update: libreswan Multiple Vulnerabilities (ALMALINUX9.6:CLSA-2026:1784305067)

The AlmaLinux 9.6 host has a package installed that is affected by multiple vulnerabilities as referenced in the TuxCare ALMALINUX9.6:CLSA-2026:1784305067 advisory. - Libreswan, via the function RSAauthenticatehashsignaturerawrsa, did not correctly verify the length of the authentication hash whe...

Rocky Linux 9 [CIQ] Security Update: nodejs-nodemon / nodejs-packaging / nodejs-packaging-bundler Multiple Vulnerabilities (crlsa-2024_1503)

The Rocky Linux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the CIQ crlsa-20241503 advisory. nodejs: code injection and privilege escalation through Linux capabilities CVE-2024-21892 nodejs: reading unprocessed HTTP request with unbounded chunk...

AlmaLinux 9.2 [TuxCare] Security Update: libreswan (ALMALINUX9.2:CLSA-2026:1784306624)

The AlmaLinux 9.2 host has a package installed that is affected by a vulnerability as referenced in the TuxCare ALMALINUX9.2:CLSA-2026:1784306624 advisory. - Libreswan, via the function RSAauthenticatehashsignaturerawrsa, did not correctly verify the length of the authentication hash when the SIG...

Rocky Linux 9.6 [TuxCare] Security Update: libreswan Multiple Vulnerabilities (ALMALINUX9.6:CLSA-2026:1784305067)

The Rocky Linux 9.6 host has a package installed that is affected by multiple vulnerabilities as referenced in the TuxCare ALMALINUX9.6:CLSA-2026:1784305067 advisory. - Libreswan, via the function RSAauthenticatehashsignaturerawrsa, did not correctly verify the length of the authentication hash...

EulerOS Virtualization 2.11.1 : shim (EulerOS-SA-2026-3473)

According to the versions of the shim packages installed, the EulerOS Virtualization installation on the remote host is affected by the following vulnerabilities : A timing based side channel exists in the OpenSSL RSA Decryption implementation which could be sufficient to recover a plaintext acro...

Astra Linux – Vulnerability in gnutls28

A timing side-channel vulnerability in the handling of RSA ClientKeyExchange messages was discovered in GnuTLS. This side-channel can be used to recover the key encrypted in the RSA ciphertext across a network, in a Bleichenbacher-style attack. To successfully decrypt the data, the attacker would...

Astra Linux – Vulnerability in nss

The NSS code used for checking PKCS1 v1.5 was leaking information useful for launching Bleichenbacher-style attacks. Both the overall correctness of the padding and the length of the encrypted message were exposed through timing side-channels. By sending a large number of ciphertexts selected by...

Astra Linux – Vulnerability in OpenSSL

There exists a timing-based side channel in the OpenSSL RSA Decryption implementation. This vulnerability could be sufficient for an attacker to recover plaintext across a network in a Bleichenbacher-style attack. To successfully decrypt data, an attacker would need to be able to send a very larg...

SUSE CVE-2026-33894

Forge also called node-forge is a native implementation of Transport Layer Security in JavaScript. Prior to version 1.4.0, RSASSA PKCS1 v1.5 signature verification accepts forged signatures for low public exponent keys e=3. Attackers can forge signatures by stuffing “garbage” bytes within the ASN...

Unity Linux 20.1070e Security Update: nss (UTSA-2026-030724)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-030724 advisory. The NSS code used for checking PKCS1 v1.5 was leaking information useful in mounting Bleichenbacher-like attacks. Both the overall correctness of the padding as well...

librenswan: IKEv2 Denial of Service via RSA-SHA1 (PKCS#1 RSASSA-PKCS1-v1_5) authentication payload

A flaw was found in Libreswan's implementation of IKEv2 authentication when processing signatures utilizing the RSASSA-PKCS1-v15 scheme. The RSAauthenticatehashsignaturepkcs115rsa function does not correctly validate the DER encoding of the ASN.1 digest. A remote, unauthenticated attacker could...

Security Bulletin:Vulnerability in OpenSSL affects IBM Netezza Appliance

Summary The OpenSSL package is used by IBM Netezza Appliance. IBM Netezza Appliance has addressed the applicable CVE CVE-2026-42768 Vulnerability Details CVEID:CVE-2026-42768 DESCRIPTION: Issue summary: The CMSdecrypt and PKCS7decrypt functions are vulnerable to Bleichenbacher-style attack when a...