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Critical security vulnerability affecting Apache Struts2 below 6.4.0.   Alert

Dec 13, 2024 - ASD’s ACSC is aware of a critical vulnerability impacting Apache Struts2 below 6.4.0 (CVE-2024-53677).

Remote code execution vulnerability present in Samba versions prior to 4.13.17   Alert

Feb 4, 2022 - A vulnerability (CVE-2021-44142) has been identified in Samba versions prior to 4.13.17. Exploitation of this vulnerability could allow a malicious cyber actor to perform privileged remote code execution. Affected Australian organisations should apply the available patch, including affected software vendors.

The case for memory safe roadmaps   Publication

Dec 7, 2023 - This guidance provides manufacturers with steps to create memory safe roadmaps and implement changes to eliminate memory safety vulnerabilities from their products.

OS Command Injection Vulnerability in GlobalProtect Gateway   Alert

May 3, 2024 - ASD’s ACSC is aware of a vulnerability (CVE-2024-3400) that enables an unauthenticated attacker to execute arbitrary code with root privileges on the firewall.

Active exploitation of vulnerability in Microsoft Internet Information Services   Alert

May 22, 2020 - The Australian Signals Directorate’s Australian Cyber Security Centre (ASD’s ACSC) is aware that sophisticated actors are actively exploiting a deserialisation vulnerability existing in all versions of Microsoft’s Internet Information Services (IIS) using the .NET framework (.NET). The vulnerability exploits the service’s VIEWSTATE parameter to allow for remote code execution by unauthorised users.

SonicWall Breach   Alert

Feb 4, 2021 - SonicWall identified an internal systems breach using a zero-day vulnerability within the SMA 100 series 10.x code.

Microsoft Exchange ProxyShell Targeting in Australia   Alert

Aug 19, 2021 - The Australian Signals Directorate’s Australian Cyber Security Centre (ASD’s ACSC) has observed targeting of the Microsoft Exchange ProxyShell vulnerability by Malicious actors.

Summary of Tactics, Techniques and Procedures Used to Target Australian Networks   Advisory

May 20, 2020 - This advisory provides information on methods to detect many of the TTPs listed. Partners are strongly encouraged to review their environments for the presence of the exploited vulnerabilities and provided TTPs.

Active exploitation of vulnerable Sitecore Experience Platform content management systems   Alert

Nov 5, 2021 - There is active exploitation of a vulnerability occurring in certain versions of Sitecore Experience Platform systems. Affected Australian organisation should apply the available security update.

Critical vulnerability present in certain versions of Microsoft Excel   Alert

Nov 11, 2021 - Microsoft has identified active exploitation of a vulnerability in Microsoft Excel. Affected Australian organisations should apply the available security update as soon as possible.

ForgeRock Open AM critical vulnerability   Alert

Jul 7, 2021 - The Australian Signals Directorate’s Australian Cyber Security Centre (ASD’s ACSC) has observed active exploitation of a vulnerability in ForgeRock OpenAM (reported as CVE-2021-35464) against a number of Australian organisations. The ASD’s ACSC strongly recommends organisations urgently apply available patches or workarounds to mitigate the risk of this vulnerability being exploited.

High Assurance Evaluation Program   Program

Aug 18, 2022 - The Australian Signals Directorate’s High Assurance Evaluation Program involves rigorous analysis and testing to search for any security vulnerabilities in products.

Critical vulnerability in Microsoft Windows Server Update Service (WSUS)   Alert

Oct 25, 2025 - Critical vulnerability impacting Microsoft Windows Server Update Service – CVE-2025-59287. ASD’s ACSC recommends organisations update affected products to the latest versions and follow the advice detailed in the Microsoft Security Update guide.

Potential Accellion File Transfer Appliance compromise   Alert

Feb 25, 2021 - The ACSC has identified Australian organisations that may have been impacted by the Accellion File Transfer Appliance vulnerability and have provided mitigation recommendations.

Technical example: User application hardening   Publication

Dec 16, 2022 - User application hardening protects an organisation from a range of threats including malicious websites, advertisements running malicious scripts and exploitation of vulnerabilities in unsupported software. These attacks often take legitimate application functionality and use it for malicious purposes. User application hardening makes it harder for cybercriminals to exploit vulnerabilities or at-risk functionality in your organisation’s applications.

Cybercriminals scanning Australian entities for serious cyber vulnerability   News

Dec 21, 2021 - Australians must urgently patch applications and software products as malicious cyber adversaries conduct thousands of scans in search of the vulnerability related to the critical Log4j software flaw.

Netlogon elevation of privilege vulnerability (CVE-2020-1472)   Alert

Sep 22, 2020 - The ACSC is aware of a recently disclosed critical vulnerability in Microsoft Active Directory Domain Controller systems that allows unauthenticated attackers to trivially access administrative credentials.

Vulnerability Affecting BlackBerry QNX RTOS   Advisory

Aug 17, 2021 - The Australian Signals Directorate’s Australian Cyber Security Centre (ASD’s ACSC) is aware of a vulnerability affecting the BlackBerry QNX, the world’s most prevalent real time operating system.

Vulnerability in Microsoft Office SharePoint Server products   Alert

Jul 20, 2025 - ASD’s ACSC is aware of a vulnerability (CVE-2025-53770) affecting instances of Microsoft Office SharePoint Server products. Organisations are strongly encouraged to take immediate action to mitigate and detect compromise on relevant systems.

Australians urged to act on cyber alert   News

Dec 15, 2021 - The Australian Signals Directorate’s Australian Cyber Security Centre (ASD’s ACSC) issued an alert on a vulnerability in the Apache Log4j software library that exposed systems to potential cyberattack.