Microsoft is publishing 137 vulnerabilities on May 2026 Patch Tuesday. Microsoft is not aware of exploitation in the wild or public disclosure for any of these vulnerabilities. So far this month, Microsoft has provided patches to address 133 browser vulnerabilities, which are not included in the Patch Tuesday count above.
Windows Netlogon: critical RCE
Anyone responsible for securing a domain controller should prioritize remediation of CVE-2026-41089, which is a critical stack-based buffer overflow in Windows Netlogon with a CVSS v3 base score of 9.8. Exploitation leads to execution in the context of the Netlogon service, so that’s SYSTEM privileges on the domain controller. For most pentesters, that’s the point at which the customer report more or less writes itself. No privileges or user interaction are required, and attack complexity is low, which suggests that creation of a reliable exploit might not be especially difficult for anyone with knowledge of the specific mechanism.
Read more…
Source: Rapid7
Sign up for the Cyber Security Review Newsletter
The latest cyber security news and insights delivered right to your inbox
Related:
- Network Attack Trends: Attackers Leveraging High Severity and Critical Exploits
September 15, 2020
From May 1-July 21, 2020, Unit 42 researchers captured global network traffic from firewalls around the world and then analyzed the data to examine the latest network attack trends. The majority of attacks we observed were classified as high severity (56.7%), and nearly one quarter (23%) were classified as critical. The most common vulnerabilities exploited ...
- Billions of devices vulnerable to new ‘BLESA’ Bluetooth security flaw
September 15, 2020
Billions of smartphones, tablets, laptops, and IoT devices are using Bluetooth software stacks that are vulnerable to a new security flaw disclosed over the summer. Named BLESA (Bluetooth Low Energy Spoofing Attack), the vulnerability impacts devices running the Bluetooth Low Energy (BLE) protocol. BLE is a slimmer version of the original Bluetooth (Classic) standard but designed to ...
- Windows 10 ‘Finger’ command can be abused to download or steal files
September 15, 2020
The list of native executables in Windows that can download or run malicious code keeps growing as another one has been reported recently. These are known as living-off-the-land binaries (LoLBins) and can help attackers bypass security controls to fetch malware without triggering a security alert on the system. The latest addition is finger.exe, a command that ships ...
- Windows Exploit Released For Microsoft ‘Zerologon’ Flaw
September 15, 2020
Proof-of-concept (PoC) exploit code has been released for a Windows flaw, which could allow attackers to infiltrate enterprises by gaining administrative privileges, giving them access to companies’ Active Directory domain controllers (DCs). The vulnerability, dubbed “Zerologon,” is a privilege-escalation glitch (CVE-2020-1472) with a CVSS score of 10 out of 10, making it critical in severity. The ...
- QR Codes Serve Up a Menu of Security Concerns
September 15, 2020
Quick Response (QR) codes are booming in popularity and hackers are flocking to exploit the trend. Worse, according to a new study, people are mostly ignorant to how QR codes can be easily abused to launch digital attacks. The reason QR code use is skyrocketing is tied to more brick-and-mortar businesses are forgoing paper brochures, menus ...
- A Blind Spot in ICS Security: The Protocol Gateway [Part 2] Vulnerability Allowing Stealth Attacks on Industrial Control Systems
September 14, 2020
A protocol gateway is a small network device, also called a protocol converter” or “IoT gateway.” It is similar to an “interpreter” in the digital word, and acts as a communications intermediary between different protocols. As the integration of networks accelerates with IoT, protocol conversion grows increasingly important. However, the security of protocol gateways has not ...