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Planning for critical vulnerabilities: What the board of directors needs to know   Publication

Dec 14, 2023 - This publication provides information on why it is important that the board of directors is aware of and plan for critical vulnerabilities that have the potential to cause major cybersecurity incidents.

Multiple Vulnerabilities in VMware vRealize Hyperic monitoring and performance management product   Alert

Nov 8, 2022 - The Australian Signals Directorate’s Australian Cyber Security Centre (ASD’s ACSC) has identified a number of critical vulnerabilities affecting VMware’s vRealize Hyperic monitoring and performance management product.

2020-002: Critical Vulnerabilities for Microsoft Windows, Patch Urgently   Advisory

Jan 15, 2020 - If you or your organisation uses any of the affected products, the ACSC recommends that you apply the patches urgently.

Critical vulnerabilities in Citrix Gateway and Application Delivery Controller (ADC) devices   Alert

Dec 14, 2022 - The Australian Signals Directorate's Australian Cyber Security Centre (ASD's ACSC) is aware of a critical vulnerability affecting many versions of Citrix Gateway and ADC. All Australian operators should check for indicators of compromise and install the latest updated versions.

Processors can be exploited by Meltdown and Spectre vulnerabilities   Alert

Jan 29, 2020 - Security researchers have developed methods involving speculative execution to read kernel memory from user space on a variety of processors from a range of vendors produced in the last decade. These methods have been referred to as Meltdown and Spectre.

Critical vulnerabilities in Ivanti Connect Secure, Ivanti Policy Secure and Ivanti Neurons for ZTA Gateways   Alert

Jan 9, 2025 - Ivanti has identified critical vulnerabilities affecting Ivanti Connect Secure, Ivanti Policy Secure and Ivanti Neurons for ZTA Gateways. Customers should update to available patched versions immediately and monitor Ivanti’s Security Advisory for further advice.

Threat Actors Exploit Multiple Vulnerabilities in Ivanti Connect Secure and Policy Secure Gateways   Advisory

Feb 28, 2024 - The Cybersecurity and Infrastructure Security Agency (CISA), Federal Bureau of Investigation (FBI), Multi-State Information Sharing & Analysis Center (MS-ISAC), Australian Signals Directorate’s Australian Cyber Security Center (ASD’s ACSC), and the UK’s National Cyber Security Centre (NCSC), are releasing this joint Cybersecurity Advisory (CSA) in response to the active exploitation of CVE-2023-46805, CVE-2024-21887, CVE-2024-22024, and CVE-2024-21893—multiple vulnerabilities affecting Ivanti Connect Secure and Ivanti Policy Secure gateways.

Critical vulnerabilities present in certain versions of Apple iOS, macOS and Safari   Alert

Sep 14, 2021 - Vulnerabilities have been identified in certain versions of Apple iOS, macOS and Safari which could allow an actor to install malware or perform other actions on a vulnerable device or computer.

Iranian Government-Sponsored APT Cyber Actors Exploiting Microsoft Exchange and Fortinet Vulnerabilities in Furtherance of Malicious Activities   Advisory

Nov 22, 2021 - Iranian government-sponsored APT actors are actively targeting a broad range of victims across multiple U.S. critical infrastructure sectors, including the Transportation Sector and the Healthcare and Public Health Sector, as well as Australian organisations.

Iranian Islamic Revolutionary Guard Corps-Affiliated Cyber Actors Exploiting Vulnerabilities for Data Extortion and Disk Encryption for Ransom Operations   Advisory

Sep 15, 2022 - The Australian Signals Directorate's Australian Cyber Security Centre (ASD's ACSC) has joined with international cyber security agency partners to co-author an advisory on continued Iranian state-sponsored cyber threats. Organisations are encouraged to apply the recommended mitigations to protect themselves online.

Report  

Apr 11, 2023 - Report a cybercrime, incident or vulnerability.

Vulnerability planning  

Sep 3, 2025 - Resources to help organisations plan for, and manage, critical vulnerabilities effectively.

Critical Unauthenticated Remote Code Execution vulnerability in n8n workflow automation platform   Alert

Jan 8, 2026 - A critical unauthenticated Remote Code Execution (RCE) vulnerability affecting n8n workflow automation platform has been observed. The critical vulnerability, tracked as CVE-2026-21858, allows unauthenticated threat actors to access sensitive files on the underlying server through execution of certain form-based workflows leading to RCE.

This vulnerability is assessed as CVSS 10.0.

Sign up for alerts  

Nov 14, 2024 - Sign up for alerts on the latest threats and vulnerabilities.

Critical vulnerability in React Server Components (CVE-2025-55182)   Alert

Dec 4, 2025 - ASD's ACSC is aware of a critical vulnerability in React Server Components.

Critical vulnerability in ManageEngine ADSelfService Plus exploited by cyber actors   Alert

Sep 24, 2021 - A vulnerability exists in certain versions of ManageEngine ADSelfService Plus. A cyber actor could exploit this vulnerability to execute arbitrary code, potentially enabling the actor to take control of the vulnerable host. Affected Australian organisations should apply the available security update.

Remote code execution vulnerability present in the Windows Scripting Engine of Microsoft Windows   Alert

Sep 16, 2021 - A vulnerability exists in a component of Microsoft Windows. A malicious cyber actor could exploit this vulnerability to execute arbitrary code, potentially enabling the actor to take control of the vulnerable host. Affected Australian customers should apply the security update provided by Microsoft.

Report a vulnerability   Service

Report vulnerabilities that are not publicly known, through the Australian Signals Directorate’s Australian Cyber Security Centre's (ASD’s ACSC) coordinated vulnerability disclosure service.

Critical vulnerability present in certain versions of Apple iOS and iPadOS   Alert

Oct 13, 2021 - A vulnerability has been identified in certain Apple products which could allow an actor to install malware or perform other actions on a vulnerable device.

Remote code execution vulnerability present in the MSHTML component of Microsoft Windows   Alert

Sep 14, 2021 - A vulnerability exists in a component of Microsoft Windows. A malicious cyber actor could exploit this vulnerability to execute arbitrary code, potentially enabling the actor to take control of the vulnerable host. At this current time there is no patch available, affected Australian customers should apply the Microsoft recommended workarounds.