Improper Initialization in OpenSSL - CVE-2026-45445

Vulnerability identifier: #VU134275

CSH Severity: Low

CVSS v4: 8.4 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N]

CVE-ID: CVE-2026-45445

CWE-ID: CWE-665

Exploitation vector: Local access

Exploit availability: No public exploit available

The vulnerability allows a local user to forge arbitrary ciphertext.

The vulnerability exists due to improper initialization in the AES-OCB EVP_Cipher() one-shot path when processing AES-OCB operations through the public EVP_Cipher() interface. A local user can invoke the one-shot API on an AES-OCB context to forge arbitrary ciphertext.

Only applications that combine AES-OCB with the EVP_Cipher() one-shot API are affected; applications using the documented streaming AEAD API are not affected.

OpenSSL
SUSE Linux Enterprise Server 15 SP6
SUSE Linux Enterprise Server 15 SP5
Debian Linux
SUSE Linux Enterprise Server 15 SP4
SUSE Linux Enterprise High Performance Computing ESPOS 15
SUSE Linux Enterprise High Performance Computing 15
SUSE Linux Enterprise High Performance Computing LTSS 15
SUSE Linux Enterprise Server 15
SUSE Linux Enterprise Server for SAP Applications 15
SUSE Linux Enterprise Desktop 15
SUSE Linux Enterprise Real Time 15
SUSE Linux Enterprise Micro for Rancher
SUSE Linux Enterprise Micro
IBM i
Fedora
Red Hat Enterprise Linux for Power, little endian
Red Hat Enterprise Linux for x86_64
Red Hat Enterprise Linux for ARM 64
Red Hat Enterprise Linux for IBM z Systems
FreeBSD
Basesystem Module
openSUSE Leap
Ubuntu
openEuler
IBM Cloud Pak for Data System
IBM MQ Operator
Netezza Appliance
IBM supplied MQ Advanced container images
Operator for PostgreSQL
LANTIME Operating System Firmware (LTOS)
openssl (Ubuntu package)
openssl-3
libopenssl-3-devel
libopenssl3-debuginfo
libopenssl3-32bit
libopenssl-3-devel-32bit
libopenssl3-32bit-debuginfo
libopenssl3-64bit-debuginfo
libopenssl3-64bit
libopenssl-3-devel-64bit
openssl-3-doc
libopenssl3
openssl-3-debuginfo
openssl-3-debugsource
openssl-help
openssl-perl
openssl-libs
openssl-devel
openssl-debugsource
openssl-debuginfo
openssl
openssl (Debian package)
libopenssl-3-fips-provider
libopenssl-3-fips-provider-debuginfo
libopenssl-3-fips-provider-32bit-debuginfo
libopenssl-3-fips-provider-32bit
libopenssl-3-fips-provider-64bit
libopenssl-3-fips-provider-64bit-debuginfo
openssl (Red Hat package)
openssl3
edk2-ovmf
edk2
edk2-debuginfo
edk2-debugsource
edk2-devel
edk2-aarch64
edk2-help
python3-edk2-devel
EntireX

Install security update from vendor's website.

OpenSSL - addressed in versions 3.0.21, 3.4.6, 3.5.7, 3.6.3, 4.0.1
IBM Cloud Pak for Data System - update to 8.10.26.07.SP3
Netezza Appliance - update to 1.0.2.0
IBM MQ Operator - addressed in versions 3.2.26 SC2, 4.0.1 SC2
LANTIME Operating System Firmware (LTOS) - update to 7.10.013
IBM supplied MQ Advanced container images - update to 10.0.0.0-r2
openssl (Ubuntu package) - addressed in versions 3.0.2-0ubuntu1.25, 3.0.13-0ubuntu3.11, 3.5.3-1ubuntu3.4, 3.5.5-1ubuntu3.2
openssl-3 - addressed in versions 3.0.8-150400.4.87.1, 3.0.8-150500.5.66.1, 3.1.4-150600.5.53.1, 3.2.3-150700.5.36.1
libopenssl-3-devel - addressed in versions 3.0.8-150400.4.87.1, 3.0.8-150500.5.66.1, 3.1.4-150600.5.53.1, 3.2.3-150700.5.36.1
libopenssl3-debuginfo - addressed in versions 3.0.8-150400.4.87.1, 3.0.8-150500.5.66.1, 3.1.4-150600.5.53.1, 3.2.3-150700.5.36.1
libopenssl3-32bit - addressed in versions 3.0.8-150400.4.87.1, 3.0.8-150500.5.66.1, 3.1.4-150600.5.53.1, 3.2.3-150700.5.36.1
libopenssl-3-devel-32bit - addressed in versions 3.0.8-150400.4.87.1, 3.0.8-150500.5.66.1, 3.1.4-150600.5.53.1
libopenssl3-32bit-debuginfo - addressed in versions 3.0.8-150400.4.87.1, 3.0.8-150500.5.66.1, 3.1.4-150600.5.53.1, 3.2.3-150700.5.36.1
libopenssl3-64bit-debuginfo - addressed in versions 3.0.8-150400.4.87.1, 3.0.8-150500.5.66.1, 3.1.4-150600.5.53.1
libopenssl3-64bit - addressed in versions 3.0.8-150400.4.87.1, 3.0.8-150500.5.66.1, 3.1.4-150600.5.53.1
libopenssl-3-devel-64bit - addressed in versions 3.0.8-150400.4.87.1, 3.0.8-150500.5.66.1, 3.1.4-150600.5.53.1
openssl-3-doc - addressed in versions 3.0.8-150400.4.87.1, 3.0.8-150500.5.66.1, 3.1.4-150600.5.53.1
libopenssl3 - addressed in versions 3.0.8-150400.4.87.1, 3.0.8-150500.5.66.1, 3.1.4-150600.5.53.1, 3.2.3-150700.5.36.1
openssl-3-debuginfo - addressed in versions 3.0.8-150400.4.87.1, 3.0.8-150500.5.66.1, 3.1.4-150600.5.53.1, 3.2.3-150700.5.36.1
openssl-3-debugsource - addressed in versions 3.0.8-150400.4.87.1, 3.0.8-150500.5.66.1, 3.1.4-150600.5.53.1, 3.2.3-150700.5.36.1
openssl-help - addressed in versions 3.0.12-50, 3.0.12-52
openssl-perl - addressed in versions 3.0.12-50, 3.0.12-52
openssl-libs - addressed in versions 3.0.12-50, 3.0.12-52
openssl-devel - addressed in versions 3.0.12-50, 3.0.12-52
openssl-debugsource - addressed in versions 3.0.12-50, 3.0.12-52
openssl-debuginfo - addressed in versions 3.0.12-50, 3.0.12-52
openssl - addressed in versions 3.0.12-50, 3.0.12-52
openssl (Debian package) - addressed in versions 3.0.20-1~deb12u2, 3.5.6-1~deb13u2
libopenssl-3-fips-provider - addressed in versions 3.1.4-150600.5.53.1, 3.2.3-150700.5.36.1
libopenssl-3-fips-provider-debuginfo - addressed in versions 3.1.4-150600.5.53.1, 3.2.3-150700.5.36.1
libopenssl-3-fips-provider-32bit-debuginfo - addressed in versions 3.1.4-150600.5.53.1, 3.2.3-150700.5.36.1
libopenssl-3-fips-provider-32bit - addressed in versions 3.1.4-150600.5.53.1, 3.2.3-150700.5.36.1
libopenssl-3-fips-provider-64bit - update to 3.1.4-150600.5.53.1
libopenssl-3-fips-provider-64bit-debuginfo - update to 3.1.4-150600.5.53.1
openssl (Red Hat package) - addressed in versions 3.5.5-4.el9_8, 3.5.5-4.el10_2
openssl3 - update to 3.5.5-5.el8
openssl - update to 3.5.7-1.fc44
EntireX - update to 11.1 Fix6
edk2-ovmf - addressed in versions 202308-37, 202308-42
edk2 - addressed in versions 202308-37, 202308-42
edk2-debuginfo - addressed in versions 202308-37, 202308-42
edk2-debugsource - addressed in versions 202308-37, 202308-42
edk2-devel - addressed in versions 202308-37, 202308-42
edk2-aarch64 - addressed in versions 202308-37, 202308-42
edk2-help - addressed in versions 202308-37, 202308-42
python3-edk2-devel - addressed in versions 202308-37, 202308-42

• https://openssl-library.org/news/secadv/20260609.txt

• Multiple vulnerabilities in OpenSSL
• Debian update for openssl
• Ubuntu update for openssl
• Fedora 44 update for openssl
• Red Hat Enterprise Linux 10 update for openssl
• Red Hat Enterprise Linux 9 update for openssl
• FreeBSd update for OpenSSL
• openEuler 24.03 LTS SP3 update for openssl
• SUSE update for openssl-3
• SUSE update for openssl-3
• SUSE update for openssl-3
• openEuler 24.03 LTS SP1 update for openssl
• openEuler 24.03 LTS SP1 update for edk2
• SUSE update for openssl-3
• Multiple vulnerabilities in IBM Operator for PostgreSQL
• Multiple vulnerabilities in IBM EntireX
• openEuler 24.03 LTS SP3 update for edk2
• Multiple vulnerabilities in IBM MQ Operator and Queue manager container images
• Multiple vulnerabilities in IBM i
• Fedora EPEL 8 update for openssl3
• Multiple vulnerabilities in Meinberg LANTIME firmware
• IBM Netezza Appliance update for FIPS
• Multiple vulnerabilities in IBM Cloud Pak for Data System