Advisories

ⓘ Attackers are targeting Ivanti Connect Secure appliances using known vulnerabilities. Attackers may sometimes maintain persistent, undetected access even after patching systems. Advisory Overview  Advisory Type Technical Author Marcus Knowles Date 17 April 2025 Ivanti and CISA recently reported active exploitation of several critical vulnerabilities in Ivanti network access security appliances. UNC5221, a China-linked threat group, uses these vulnerabilities to break into networks, deploy custom

ⓘ We are reaching out to let you know about ongoing attacks targeting Fortinet devices using known vulnerabilities. In some cases, the attackers can remain undetected even after patching. Attention constituent: Fortinet and CISA recently reported active exploitation of several known vulnerabilities in Fortinet devices. These include switches, firewalls, and other related products, many of which are widely used for secure remote access. Attackers are

ⓘ Your system could be at risk of being affected by several CVEs targeting SSL VPNs. CIRT-BS is advising that unpatched VPN devices are being actively scanned for vulnerabilities. These include many widely used brands detailed below. The attacks are using previously breached credentials and brute force to bypass weak or misconfigured MFA to access devices and/or deploy ransomware. Advisory Overview Advisory Type Technical Author

ⓘ This advisory addresses a critical vulnerability impacting FortiOS, FortiProxy, and FortiSwitchManager platforms. Attention constituent:  CVE-2022-40684 is a critical authentication bypass vulnerability impacting Fortinet’s FortiOS, FortiProxy, and FortiSwitchManager platforms. This flaw enables attackers to gain unauthorised administrative access, potentially leading to system compromise, data theft, and operational disruption. A leaked list of 15,000 vulnerable IP addresses has heightened the risk of exploitation. Immediate action is

ⓘ This advisory addresses a critical vulnerability impacting FortiOS systems (CVE-2024-55591). Attention constituent:  A critical vulnerability (CVE-2024-55591) has been identified in Fortinet’s FortiOS systems. This vulnerability stems from an authentication bypass flaw in the FortiOS web management interface. Exploitation of this vulnerability allows remote, unauthenticated attackers to gain unauthorised administrative access and execute arbitrary actions on affected systems. CVE: CVE-2024-55591 Severity: Critical (CVSS: 9.8) Affected Platforms: FortiOS systems

ⓘ This advisory addresses an increase in compromised WhatsApp accounts. Attention constituent:  CIRT-BS is advising members of the public to stay alert as a sophisticated scam targeting WhatsApp users is on the rise. Cybercriminals are hacking accounts and deceiving users’ friends and family into sending money by posing as trusted contacts. How the Scam Works Scammers make contact, sometimes with a WhatsApp call, and use fake

ⓘ This advisory addresses a recent update to CrowdStrike’s Falcon sensor which has led to widespread Blue Screen of Death errors. Attention Microsoft service users:  A recent update to CrowdStrike’s Falcon sensor has led to widespread Blue Screen of Death (BSOD) errors on Windows hosts, resulting in disruptions locally to several services, including payment processing, and global disruptions. CrowdStrike has deployed a fix for this