IBM SECURITY ADVISORY First Issued: Mon Oct 19 04:45:00 CDT 2026 The most recent version of this document is available here: https://aix.software.ibm.com/aix/efixes/security/java_oct2026_advisory.asc Security Bulletin: Multiple vulnerabilities in IBM Java SDK affect AIX =============================================================================== SUMMARY: There are multiple vulnerabilities in IBM SDK Java Technology Edition, Version 8 used by AIX. AIX has addressed the applicable CVEs. =============================================================================== VULNERABILITY DETAILS: CVEID: CVE-2026-61308 https://www.cve.org/CVERecord?id=CVE-2026-61308 DESCRIPTION: Difficult to exploit vulnerability allows unauthenticated attacker with network access via HTTP to compromise Java SE. While the vulnerability is in Java SE, attacks may significantly impact additional products (scope change). Successful attacks can result in unauthorized access to critical data or complete access to all Java SE accessible data. CVSS Base Score: 6.8 CVSS Vector: (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:N/A:N) CVEID: CVE-2026-70907 https://www.cve.org/CVERecord?id=CVE-2026-70907 DESCRIPTION: Easily exploitable vulnerability allows unauthenticated attacker with network access via TLS to compromise Java SE. Successful attacks can result in unauthorized ability to cause a partial denial of service (partial DOS) of Java SE. CVSS Base Score: 5.3 CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L) CVEID: CVE-2026-60589 https://www.cve.org/CVERecord?id=CVE-2026-60589 DESCRIPTION: Difficult to exploit vulnerability allows unauthenticated attacker with network access via multiple protocols to compromise Java SE. Successful attacks can result in unauthorized read access to a subset of Java SE accessible data. CVSS Base Score: 3.7 CVSS Vector: (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N) AFFECTED PRODUCTS AND VERSIONS: AIX 7.2, 7.3 VIOS 4.1 The vulnerabilities in the following filesets are being addressed: key_fileset = java Fileset Lower Level Upper Level KEY --------------------------------------------------------- Java8.jre 8.0.0.0 8.0.0.870 key_w_fs Java8.sdk 8.0.0.0 8.0.0.870 key_w_fs Java8_64.jre 8.0.0.0 8.0.0.870 key_w_fs Java8_64.sdk 8.0.0.0 8.0.0.870 key_w_fs Note: To find out whether the affected Java filesets are installed on your systems, refer to the lslpp command found in AIX user's guide. Example: lslpp -L | grep -i java REMEDIATION: A. FIXES AIX and VIOS fixes are available. The latest level of Java is available from Fix Central: 32-bit: https://www-945.ibm.com/support/fixcentral/swg/selectFixes?parent=ibm~WebSphere&product=ibm/IBM+SDKs+for+Java+Technology/Java+Standard+Edition+%28Java+SE%29&release=8.0.0.0&platform=AIX+32-bit,+pSeries&function=all 64-bit: https://www-945.ibm.com/support/fixcentral/swg/selectFixes?parent=ibm~WebSphere&product=ibm/IBM+SDKs+for+Java+Technology/Java+Standard+Edition+%28Java+SE%29&release=8.0.0.0&platform=AIX+64-bit,+pSeries&function=all The AIX and VIOS fixes can be downloaded via https from: https://aix.software.ibm.com/aix/efixes/security/java_oct2026_fix.tar The link above is to a tar file containing this signed advisory, fix packages, and OpenSSL signatures for each package. The fixes below include prerequisite checking. This will enforce the correct mapping between the fixes and AIX Technology Levels. Java Fix (*.Z) KEY --------------------------------------------------------- 8.0.0 java8_32_installp_8.0.0.871.tar key_w_fix 8.0.0 java8_64_installp_8.0.0.871.tar key_w_fix To extract the fixes from the tar file: tar xvf java_oct2026_fix.tar cd java_oct2026_fix Verify you have retrieved the fixes intact: The checksums below were generated using the following command: "openssl dgst -sha256 [filename]" openssl dgst -sha256 filename KEY ----------------------------------------------------------------------------------------------------------------- a2bb9ff8522b4c23b749d9d26f7985e3e791cc875c63940fe831bce5508f9904 java8_32_installp_8.0.0.871.tar key_w_csum f99d76d55bbd9a51918b8d9645b4904aa7cf4a80da1c15836045b6d56c4afff0 java8_64_installp_8.0.0.871.tar key_w_csum The checksums below were generated using the following command: "openssl dgst -sha512 [filename]" openssl dgst -sha512 filename KEY ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- 80d3c4d75502687ebe64c189107c297c05301207f4a3b2999f8391978ddfaa4b028adb14e134c29710f0d8e6ea4aac677b0aeb4396028e52a19f4697e94536ad java8_32_installp_8.0.0.871.tar key_4K_w_csum d624fedbb1fd3c99c596de422c31cf1198e36b7cbbc9230684c87e01b3ecdcceb80a940472ded59418e89069ce63d604e9077c16ad3be29cb01403a9e0689e1b java8_64_installp_8.0.0.871.tar key_4K_w_csum These sums should match exactly. The OpenSSL signatures in the tar file and on this advisory can also be used to verify the integrity of the fixes. If the sums or signatures cannot be confirmed, contact IBM Support at http://ibm.com/support/ and describe the discrepancy. openssl dgst -sha256 -verify [pubkey_file] -signature [advisory_file].sig [advisory_file] openssl dgst -sha256 -verify [pubkey_file] -signature [ifix_file].sig [ifix_file] Published advisory OpenSSL signature file location: https://aix.software.ibm.com/aix/efixes/security/java_oct2026_advisory.asc.sig B. FIX AND INTERIM FIX INSTALLATION If possible, it is recommended that a mksysb backup of the system be created. Verify it is both bootable and readable before proceeding. To preview a fix installation: installp -a -d fix_name -p all # where fix_name is the name of the # fix package being previewed. To install a fix package: installp -a -d fix_name -X all # where fix_name is the name of the # fix package being installed. WORKAROUNDS AND MITIGATIONS: None. =============================================================================== CONTACT US: If you would like to receive AIX Security Advisories via email, please visit "My Notifications": http://www.ibm.com/support/mynotifications Contact IBM Support for questions related to this announcement: https://ibm.com/support/ For information on how to securely verify AIX security bulletins and fixes: https://www.ibm.com/support/pages/node/6985269 To obtain the OpenSSL public key that can be used to verify the signed advisories and ifixes: Download the key from our web page: https://aix.software.ibm.com/aix/efixes/security/systems_p_os_aix_security_pubkey.txt To verify the AIX/VIOS security bulletin: Published advisory OpenSSL signature file location: https://aix.software.ibm.com/aix/efixes/security/java_oct2026_advisory.asc.sig openssl dgst -sha256 -verify [pubkey_file] -signature [advisory_file].sig [advisory_file] Please contact your local IBM AIX support center for any assistance. REFERENCES: Complete CVSS v2 Guide: http://www.first.org/cvss/v2/guide On-line Calculator v2: http://nvd.nist.gov/CVSS-v2-Calculator Complete CVSS v3 Guide: http://www.first.org/cvss/user-guide On-line Calculator v3: http://www.first.org/cvss/calculator/3.0 RELATED INFORMATION: Security Bulletin: Multiple vulnerabilities in IBM Java SDK affect AIX https://www.ibm.com/support/pages/node/7292996 ACKNOWLEDGEMENTS: None. CHANGE HISTORY: First Issued: Mon Oct 19 04:45:00 CDT 2026 =============================================================================== *The CVSS Environment Score is customer environment specific and will ultimately impact the Overall CVSS Score. Customers can evaluate the impact of this vulnerability in their environments by accessing the links in the Reference section of this Security Bulletin. Disclaimer According to the Forum of Incident Response and Security Teams (FIRST), the Common Vulnerability Scoring System (CVSS) is an "industry open standard designed to convey vulnerability severity and help to determine urgency and priority of response." IBM PROVIDES THE CVSS SCORES "AS IS" WITHOUT WARRANTY OF ANY KIND, INCLUDING THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. CUSTOMERS ARE RESPONSIBLE FOR ASSESSING THE IMPACT OF ANY ACTUAL OR POTENTIAL SECURITY VULNERABILITY.