VulnHub

The Interlock ransomware gang has been actively exploiting a serious remote code execution vulnerability in Cisco's Secure Firewall Management Center (FMC) software since late January. This flaw, classified as having maximum severity, allows attackers to execute arbitrary code on affected systems, putting organizations at significant risk. Companies using this software should be particularly vigilant, as the vulnerability is being exploited in ongoing attacks. Cisco has not yet released a patch to address this issue, which raises concerns about the potential for widespread impact. Organizations relying on Cisco FMC should prioritize security measures and closely monitor any unusual activity to safeguard their networks.

Amazon Threat Intelligence has issued a warning regarding an active ransomware campaign known as Interlock, which is exploiting a significant vulnerability in Cisco's Secure Firewall Management Center (FMC) Software. This vulnerability, identified as CVE-2026-20131, has a maximum severity score of 10.0 and stems from an insecure deserialization of user-supplied Java byte streams. This flaw could allow attackers to gain root access without authentication, posing a serious risk to organizations using affected Cisco products. The exploitation of this vulnerability is concerning as it enables unauthorized access, potentially leading to data breaches and system compromises. Companies using Cisco FMC Software must take immediate action to protect their systems from this ongoing threat.

Google has reported a significant increase in zero-day attacks targeting enterprise software, with nearly a quarter of these incidents aimed at security and networking appliances in 2025. This trend indicates that attackers are increasingly focusing on vulnerabilities within critical infrastructure components used by businesses. The implications are serious, as these vulnerabilities can lead to unauthorized access, data breaches, and disruptions in service. Companies that rely on these types of software need to prioritize security measures and stay updated on patches to protect their systems. As the threat landscape evolves, organizations must remain vigilant to mitigate risks associated with these attacks.

Nation-state hackers from countries like China and Russia have targeted the defense industrial base by exploiting at least two dozen zero-day vulnerabilities in edge devices. These vulnerabilities were used in attempts to breach the networks of defense contractors, raising concerns about national security and the integrity of sensitive military information. The attacks indicate a sophisticated level of planning and execution, as attackers often seek to gain access to critical infrastructure and proprietary technology. This ongoing threat emphasizes the need for defense contractors to enhance their cybersecurity measures and remain vigilant against such espionage efforts. As these hackers continue to evolve their tactics, the potential risks to national defense capabilities grow.

Recent zero-day vulnerabilities in Ivanti's Endpoint Manager Mobile (EPMM) have sparked renewed concern among cybersecurity experts. These flaws, which can be exploited by attackers, could potentially compromise sensitive data in mobile devices managed by the software. Organizations using EPMM must act quickly to secure their systems, as these vulnerabilities are already being exploited in the wild. Experts are urging a shift away from simply applying patches and towards more robust security measures, including better authentication controls and reducing unnecessary public interfaces. The urgency of the situation emphasizes the need for businesses to prioritize security and stay updated with the latest patches and practices.

Apple has addressed a serious zero-day vulnerability, identified as CVE-2026-20700, which was used in targeted attacks last year. This flaw, a memory corruption issue in the dyld component of Apple's operating systems, could allow attackers to execute arbitrary code on affected devices. Specifically, the vulnerability impacts versions of iOS prior to iOS 26 and was reportedly exploited in sophisticated attacks against select individuals. Users of these older versions should update their devices to protect against potential exploitation.

Microsoft has recently patched six zero-day vulnerabilities, which are serious security flaws that attackers can exploit to gain unauthorized access. Users are typically urged to update their systems immediately to protect against such threats. However, some experts are advising caution, suggesting that these patches might cause issues or conflicts with existing software. This situation leaves many users in a challenging position as they weigh the risks of applying the updates against the potential vulnerabilities. It's important for individuals and organizations to assess their specific environments before proceeding with the updates to ensure they don't inadvertently create new problems.

In February 2026, Microsoft addressed over 50 security vulnerabilities during its Patch Tuesday update, including six zero-day flaws that were actively exploited by attackers. Notably, three of these zero-days involve security feature bypasses. One of the vulnerabilities, identified as CVE-2026-21513, impacts the MSHTML/Trident browser engine used in Internet Explorer on Windows, while CVE-2026-21514 affects Microsoft Word. Attackers can exploit these vulnerabilities by tricking users into opening malicious files or links. As these security holes are actively being exploited, users and organizations must apply the updates promptly to protect their systems from potential breaches.

The European Commission recently experienced a cyberattack that took advantage of two critical zero-day vulnerabilities in Ivanti Endpoint Manager Mobile (EPMM) software, identified as CVE-2026-1281 and CVE-2026-1340. These vulnerabilities allowed attackers to potentially compromise sensitive information and systems within the Commission. As a key institution in the EU, any breach could have significant implications for data security and operational integrity. The exploitation of these flaws underscores the urgent need for organizations using Ivanti EPMM to assess their security measures and apply necessary updates promptly. This incident serves as a reminder of the ongoing risks associated with unpatched software vulnerabilities.

A Chinese cyber group known as UNC3886 has targeted Singapore's four major telecom providers using advanced techniques, including rootkits and a zero-day exploit. Fortunately, the attack did not disrupt services or compromise customer data. This incident raises concerns about the security of essential infrastructure, as telecom providers play a critical role in national communication systems. While no direct impact on users was reported, the use of sophisticated methods by attackers emphasizes the need for ongoing vigilance and robust security measures within the telecommunications sector. Companies must remain alert to such threats and ensure their defenses are up to date.

Recent zero-day attacks have breached the European Commission and government agencies in Finland and the Netherlands, targeting vulnerabilities in Ivanti software. These incidents appear to be linked, raising concerns about the security of sensitive governmental information. Ivanti is known for providing IT management solutions, and the exploitation of these vulnerabilities can lead to unauthorized access to critical data. This situation emphasizes the need for government agencies to enhance their cybersecurity measures and stay updated with software patches to prevent future breaches. The ongoing exploitation underscores a serious risk to national security and personal data protection across Europe.

The Dutch Data Protection Authority and the Council for the Judiciary have confirmed that their systems were compromised due to a zero-day exploit of Ivanti Endpoint Manager Mobile (EPMM). This vulnerability, recently disclosed, allowed attackers to access sensitive employee contact information. The breach was reported to parliament on January 29, indicating that it poses a significant risk to the privacy of individuals whose data was exposed. The incident underscores the importance of timely patching and system security, as organizations are urged to address these vulnerabilities to protect against future attacks.

In February 2026, a significant security update was released that addressed 59 Common Vulnerabilities and Exposures (CVEs), including six zero-day vulnerabilities. These vulnerabilities could allow attackers to gain unauthorized access or execute malicious code on affected systems. Various products from multiple vendors are impacted, which means a wide range of users, including businesses and individual consumers, could be at risk. The presence of zero-day vulnerabilities indicates that attackers could exploit these weaknesses before users have the chance to apply the necessary patches. Companies and users are urged to update their systems promptly to mitigate potential risks associated with these vulnerabilities. Ignoring these updates could expose them to serious security breaches.

In December 2025, vulnerabilities in SolarWinds Web Help Desk instances were exploited, allowing attackers to gain initial access to compromised systems. This incident raises concerns for organizations using SolarWinds products, as it indicates that these flaws may have been leveraged as zero-day exploits. Such vulnerabilities can lead to unauthorized access and potential data breaches, making it crucial for affected companies to address these security gaps promptly. Users should be vigilant and monitor their systems for unusual activity while applying any available patches or updates. The incident serves as a reminder of the ongoing risks associated with third-party software vulnerabilities.