ESB-2026.3431

=========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2026.3431 PAN-SA-2026-0006 Informational Bulletin: Impact assessment of OSS CVEs in PAN-OS 9 April 2026 =========================================================================== AUSCERT Security Bulletin Summary --------------------------------- Product: Palo Alto PAN-OS Publisher: Palo Alto Networks Operating System: Network Appliance Resolution: Patch/Upgrade CVE Names: CVE-2023-2176 CVE-2024-36971 CVE-2025-57052 CVE-2024-36886 CVE-2024-0646 CVE-2023-28464 CVE-2023-5633 Original Bulletin: https://security.paloaltonetworks.com/PAN-SA-2026-0006 Comment: CVSS (Max): 9.8 CVE-2025-57052 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H) CVSS Source: [CISA-ADP], Red Hat, NIST Calculator: https://www.first.org/cvss/calculator/3.1#CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H The following are listed in the CISA Known Exploited Vulnerabilities (KEV) Catalog: CISA KEV CVE(s): CVE-2024-36971 CISA KEV URL: https://www.cisa.gov/known-exploited-vulnerabilities-catalog EPSS (Max): 0.5% (65th) CVE-2024-36971 2026-04-08 - --------------------------BEGIN INCLUDED TEXT-------------------- Palo Alto Networks Security Advisories / PAN-SA-2026-0006 PAN-SA-2026-0006 Informational Bulletin: Impact assessment of OSS CVEs in PAN-OS [INFO] Informational Published 2026-04-08 Updated 2026-04-08 Discovered externally Description The Palo Alto Networks Product Security Assurance team has evaluated the following open source software (OSS) CVEs as they relate to PAN-OS software. While PAN-OS software may include the affected OSS package, PAN-OS does not offer any scenarios required for an attacker to successfully exploit these vulnerabilities and is not impacted. CVE Summary CVE-2023-2176 PAN-OS is not affected as PAN-OS does not use RDMA. CVE-2023-5633 PAN-OS is not affected as PAN-OS as the prerequisite conditions needed to be vulnerable do not exists in PAN-OS. CVE-2023-28464 PAN-OS is not affected as PAN-OS does not use the Bluetooth subsystem. CVE-2024-0646 PAN-OS is not affected as PAN-OS does not use the function splice() with a ktls socket as the destination. CVE-2024-36971 PAN-OS is not affected as PAN-OS does not use the vulnerable function __dst_negative_advice(). CVE-2024-36886 PAN-OS is not affected as PAN-OS does not use the vulnerable function tipc_buf_append(). CVE-2025-57052 This CVE does not affect PAN-OS as PAN-OS does not have the vulnerable cjson library. Product Status Versions Affected Unaffected PAN-OS None All Exploitation Status Palo Alto Networks is not aware of any malicious exploitation of this issue. Solution The OSS CVEs are fixed in the respective PAN-OS versions. CPE Applicability Timeline 2026-04-08 Initial Publication Terms of usePrivacyProduct Security Assurance and Vulnerability Disclosure PolicyReport vulnerabilitiesManage subscriptions (C) 2026 Palo Alto Networks, Inc. All rights reserved. - --------------------------END INCLUDED TEXT---------------------- You have received this e-mail bulletin as a result of your organisation's registration with AUSCERT. The mailing list you are subscribed to is maintained within your organisation, so if you do not wish to continue receiving these bulletins you should contact your local IT manager. If you do not know who that is, please send an email to auscert@auscert.org.au and we will forward your request to the appropriate person. NOTE: Third Party Rights This security bulletin is provided as a service to AUSCERT's members. As AUSCERT did not write the document quoted above, AUSCERT has had no control over its content. The decision to follow or act on information or advice contained in this security bulletin is the responsibility of each user or organisation, and should be considered in accordance with your organisation's site policies and procedures. AUSCERT takes no responsibility for consequences which may arise from following or acting on information or advice contained in this security bulletin. NOTE: This is only the original release of the security bulletin. It may not be updated when updates to the original are made. If downloading at a later date, it is recommended that the bulletin is retrieved directly from the author's website to ensure that the information is still current. Contact information for the authors of the original document is included in the Security Bulletin above. If you have any questions or need further information, please contact them directly. Previous advisories and external security bulletins can be retrieved from: https://portal.auscert.org.au/bulletins/ =========================================================================== AUSCERT The University of Queensland, Brisbane QLD 4072 Australia e: auscert@auscert.org.au t: +61 (0)7 3365 4417 Allies in Cyber Security ===========================================================================