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:
- Apple fixes macOS zero-day bug exploited by Shlayer malware
April 26, 2021
Apple has fixed a zero-day vulnerability in macOS exploited in the wild by Shlayer malware to bypass Apple’s File Quarantine, Gatekeeper, and Notarization security checks and download second-stage malicious payloads. Shlayer’s creators have managed to get their malicious payloads through Apple’s automated notarizing process before. Read more… Source: Bleeping Computer
- Nvidia Warns About Severe Security Bugs in GPU Driver, vGPU Software
April 26, 2021
Nvidia has disclosed a group of security vulnerabilities in the Nvidia graphics processing unit (GPU) display driver, which could subject gamers and others to privilege-escalation attacks, arbitrary code execution, denial of service (DoS) and information disclosure. Meanwhile, the Nvidia virtual GPU (vGPU) software also has a group of bugs that could lead to a range of ...
- CVE-2020-24557 Trend Micro bug is being exploited in the wild
April 22, 2021
US-Japanese cybersecurity firm Trend Micro disclosed on Wednesday that a threat actor began using a bug in its antivirus products to gain admin rights on Windows systems as part of its attacks. The vulnerability, tracked as CVE-2020-24557, affects the company’s Apex One and OfficeScan XG, two advanced security products aimed at enterprise customers. The bug was discovered ...
- AirDrop bugs expose Apple users’ email addresses, phone numbers
April 21, 2021
A team of academics from a German university said it discovered two vulnerabilities that can be abused to extract phone numbers and email addresses from Apple’s AirDrop file transfer feature. The two bugs reside in the authentication process during the initial phase of an AirDrop connection, where devices try to discover each one another and determine ...
- Pulse Secure VPN zero-day used to hack defense firms, govt orgs
April 20, 2021
Pulse Secure has shared mitigation measures for a zero-day authentication bypass vulnerability in the Pulse Connect Secure (PCS) SSL VPN appliance actively exploited in attacks against worldwide organizations and focused on US Defense Industrial base (DIB) networks. To mitigate the vulnerability tracked as CVE-2021-22893 (with a maximum 10/10 severity score), Pulse Secure advises customers with gateways ...
- Zero-Day Exploits in SonicWall Email Security Lead to Enterprise Compromise
April 20, 2021
In March 2021, Mandiant Managed Defense identified three zero-day vulnerabilities in SonicWall’s Email Security (ES) product that were being exploited in the wild. These vulnerabilities were executed in conjunction to obtain administrative access and code execution on a SonicWall ES device. The adversary leveraged these vulnerabilities, with intimate knowledge of the SonicWall application, to install a ...