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"U.S. CISA adds a flaw in Microsoft Exchange Server to its known exploited vulnerabilities catalog."
Views expressed in this cybersecurity, cyber crime update are those of the reporters and correspondents. Accessed on 16 May 2026, 2341 UTC.
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Russ Roberts (https://www.hawaiicybersecurityjournal.net).
126
Today
The U.S. Cybersecurity and Infrastructure Security Agency (CISA) adds a flaw in Microsoft Exchange Server to its Known Exploited Vulnerabilities catalog. The U.S. Cybersecurity and Infrastructure Security Agency (CISA) added a flaw in Microsoft Exchange Server, tracked as CVE-2026-42897 (CVSS score of 8.1), to its Known Exploited Vulnerabilities (KEV) catalog . This week, Microsoft warned that th
Russia-linked APT group Turla turned its Kazuar malware into a stealthy P2P botnet for long-term access to compromised systems. Russia-linked APT group Turla upgraded its Kazuar backdoor into a modular peer-to-peer botnet designed for stealth and persistent access to infected systems. Microsoft researchers say the malware allows attackers to maintain long-term control while making detection and d
OpenAI said the TanStack supply chain attack compromised two employee devices and exposed credentials from code repositories. OpenAI confirmed that the recent TanStack supply chain attack compromised two employee devices and exposed credential material stored in internal source code repositories. The incident began after the TeamPCP hacking group abused weaknesses in the package publishing proces
Yesterday
4 TTPs
by Pierluigi Paganini / 1d
Day two of Pwn2Own Berlin 2026 saw $385,750 earned for 15 zero-days, bringing the total to $908,750 and 39 vulnerabilities over two days. During the second day of Pwn2Own Berlin 2026, security researchers earned $385,750 after successfully demonstrating 15 unique zero-day vulnerabilities affecting products such as Windows 11, Microsoft Exchange, and Red Hat Enterprise Linux for Workstations. Comb
Microsoft warned that attackers are exploiting a new Exchange Server zero-day vulnerability, tracked as CVE-2026-42897, in the wild. Microsoft warned that threat actors are actively exploiting a new Exchange Server zero-day vulnerability tracked as CVE-2026-42897 (CVSS score 8.1). The vulnerability is an improper neutralization of input during web page generation (‘cross-site scripting’) in Micro
ESET uncovered new Ghostwriter (aka FrostyNeighbor) activity targeting Ukrainian government organizations in a campaign active since March 2026. ESET researchers published a new report documenting fresh activity attributed to the APT group FrostyNeighbor, aka Ghostwriter , active since at least March 2026, targeting Ukrainian governmental organizations. The campaign is similar to previous FrostyN
May 14, 2026
Privilege Escalation (Enterprise TA0004)
by Pierluigi Paganini / 1d
Researchers disclosed two new Windows zero-days named YellowKey and GreenPlasma affecting BitLocker and the CTFMON framework. A security researcher known as Chaotic Eclipse , also called Nightmare-Eclipse, disclosed two new Windows zero-day vulnerabilities named YellowKey and GreenPlasma . The flaws affect BitLocker and the Windows Collaborative Translation Framework (CTFMON). YellowKey could all
Pwn2Own Berlin 2026 day one saw 22 entries and 24 zero-days across major software, with researchers earning $523,000 in total rewards. Day one of Pwn2Own Berlin 2026 featured 22 entries targeting widely used technologies, including browsers, operating systems, AI platforms, and NVIDIA infrastructure. By the end of the day, researchers demonstrated 24 unique zero-day vulnerabilities and earned a t
The U.S. Cybersecurity and Infrastructure Security Agency (CISA) adds a flaw in Cisco Catalyst SD-WAN to its Known Exploited Vulnerabilities catalog. The U.S. Cybersecurity and Infrastructure Security Agency (CISA) added a flaw in Cisco Catalyst SD-WAN, tracked as CVE-2026-20182 (CVSS score of 10.0), to its Known Exploited Vulnerabilities (KEV) catalog . Cisco fixed CVE-2026-20182, a flaw in SD-W
Fragnesia, a new Linux kernel flaw tracked as CVE-2026-46300, could let local attackers gain root access through page cache corruption. Researchers disclosed a new Linux kernel privilege escalation vulnerability named Fragnesia , tracked as CVE-2026-46300 (CVSS score of 7.8). The flaw affects the XFRM ESP-in-TCP subsystem and could allow local attackers to gain full root access by corrupting the
Broadcom patched a high-severity VMware Fusion flaw, CVE-2026-41702, that could let local attackers gain root privileges. Broadcom released a security update for VMware Fusion to address a high-severity vulnerability, tracked as CVE-2026-41702, that could allow local attackers to escalate privileges to root on affected systems. The flaw is a time-of-check time-of-use (TOCTOU) vulnerability affect
Researchers found a critical 18-year-old buffer overflow flaw in NGINX, tracked as CVE-2026-42945 and named NGINX Rift. If you run NGINX, and statistically speaking, there is a very good chance you do, this week brought news worth stopping for. Security researchers at depthfirst disclosed a critical heap buffer overflow vulnerability in both NGINX Plus and NGINX Open Source that has been sitting
May 13, 2026
IoC > 2 domains
by Pierluigi Paganini / 2d
•23 TTPs
Chinese-linked FamousSparrow repeatedly targeted an Azerbaijani oil and gas company, reusing the same entry point in three intrusions from Dec 2025 to Feb 2026. Chinese-linked threat actor FamousSparrow has conducted a sustained intrusion campaign against an Azerbaijani oil and gas company, returning to the same compromised entry point three separate times between late December 2025 and late Febr
Foxconn confirmed a cyberattack on some North American factories. The Nitrogen ransomware group claims it stole 8TB of data from the firm. Foxconn confirmed that several of its North American factories were affected by a cyberattack. The manufacturer confirmed it was targeted by threat actors after the Nitrogen ransomware group listed it on its Tor data leak site on March 12. The Nitrogen ransomw
Microsoft’s May 2026 Patch Tuesday fixed 138 flaws, including 30 critical bugs, across Windows, Office, Azure, Edge, SQL Server, and more. Microsoft’s May 2026 Patch Tuesday patched 138 vulnerabilities in a single release. That is a number that gives pause even for people accustomed to these cycles. The affected products span virtually the entire Microsoft portfolio: Windows and its components, O
In January 2026, telehealth infrastructure firm OpenLoop Health suffered a security breach that exposed information of 716,000 people. OpenLoop Health confirmed a January 2026 cyberattack that exposed personal information of 716,000 individuals using its telehealth services. The breach was reported to authorities in March, but the full scope was only recently determined. Threat actors exfiltrated
7 TTPs
by Pierluigi Paganini / 3d
CVE-2025-32975 is a critical flaw in Quest KACE SMA used for endpoint management. If exploited, it could impact all managed systems across organizations. CVE-2025-32975 is a critical flaw in Quest KACE SMA used for endpoint management. If exploited, it could impact all managed systems across organizations. Quest KACE SMA is an on-premises endpoint management platform for software deployment, patc
7 TTPs
by Pierluigi Paganini / 3d
Educational tech firm Instructure reached a deal with hackers after a major Canvas breach exposed data stolen from schools and universities. Educational tech firm Instructure says it reached an agreement with the cybercrime group behind a major Canvas data theft, after attackers broke into its systems and threatened to publish stolen information from schools and universities. Instructure is a U.S
May 12, 2026
3 TTPs
by Pierluigi Paganini / 3d
Fortinet patched critical flaws in FortiSandbox and FortiAuthenticator that could let attackers remotely execute code on unpatched systems. Fortinet addressed two critical vulnerabilities affecting FortiSandbox and FortiAuthenticator. The flaws could allow attackers to execute arbitrary commands or code on unpatched systems. The first vulnerability, tracked as CVE-2026-44277, is an improper acces
BWH Hotels says hackers accessed guest reservation data, including names and contacts, for over six months across multiple hotel brands. BWH Hotels disclosed a data breach, with threat actors having had access to guest reservation data for more than six months. The incident exposed names and contact details of an undisclosed number of guests. BWH Hotels is one of the world’s largest hotel network
Anthropic’s AI found five vulnerabilities in curl, but only one low-severity issue proved to be a real vulnerability. In April, Anthropic made considerable noise announcing Mythos , a new artificial intelligence model described as so effective at identifying vulnerabilities in code as to be, in the company’s own words, “dangerously good.” So good, in fact, that Anthropic decided against releasing
19 TTPs
by Pierluigi Paganini / 4d
Attackers are exploiting cPanel flaw CVE-2026-41940 to install the Filemanager backdoor and gain unauthorized admin access. Cybercriminals are actively exploiting the critical cPanel vulnerability CVE-2026-41940 (CVSS score of 9.3) to deploy a backdoor called Filemanager on compromised servers. cPanel is a widely used web hosting control panel that lets users manage websites and servers through a
IoC > 1 URL
by Pierluigi Paganini / 4d
•9 TTPs
WannaCry showed how unpatched flaws and leaked cyber tools can cripple global systems, reshaping cybersecurity defenses worldwide. In memory of the day the digital world was shaken, but learned to fight back. The WannaCry ransomware attack represents one of the most significant events in recent cybersecurity history, not only for its global scale but also for the technical and geopolitical implic
May 11, 2026
ThreatFabric found a new TrickMo Android trojan focused on stealth and persistence, moving its command-and-control traffic to the TON network. Security researchers at ThreatFabric have recently identified a new version of TrickMo, a dangerous Android banking trojan that shows how malware operators are focusing less on flashy new features and more on improving stealth, flexibility, and long-term c
SailPoint disclosed a GitHub repository breach on April 20. The company contained the incident and said no customer data was affected. SailPoint is a cybersecurity company that provides identity security and identity governance solutions for enterprises. Its products help organizations manage and control user access to systems, applications, and sensitive data. SailPoint revealed a cybersecurity
Google says hackers now use AI to create exploits, automate attacks, evade defenses, and target AI supply chains at scale. Artificial intelligence is rapidly changing the cyber threat landscape, and a new report from the Google Cloud Threat Intelligence team highlights how attackers already use AI to improve vulnerability exploitation and gain initial access to cloud environments. The report show
by Pierluigi Paganini / 5d
German police shut down a revived Crimenetwork marketplace with 22,000 users and 100+ sellers months after the original takedown. German police dismantled a resurrected version of the German-language cybercrime marketplace Crimenetwork, just months after the original platform was taken down . The second iteration of the site had already attracted more than 22,000 users and over 100 sellers, showi
The U.S. Cybersecurity and Infrastructure Security Agency (CISA) adds a flaw in BerriAI LiteLLM to its Known Exploited Vulnerabilities catalog. The U.S. Cybersecurity and Infrastructure Security Agency
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