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:
- Norway government ministries hit by cyber attack
July 24, 2023
Norwegian authorities reported a cyber attack of unknown origin against 12 government ministries on Monday. “We have uncovered a previously unknown vulnerability in the software of one of our suppliers,” said Erik Hope, director of the Norwegian ministries’ security and service organisation, in a press statement. “This vulnerability has been exploited by an unknown actor. We ...
- Ivanti Patches Endpoint Manager Mobile CVE-2023-35078 Remote Unauthenticated API Access Vulnerability
July 24, 2023
A vulnerability has been discovered in Ivanti Endpoint Manager Mobile (EPMM), formerly known as MobileIron Core. This vulnerability impacts all supported versions – Version 11.4 releases 11.10, 11.9 and 11.8. Older versions/releases are also at risk. If exploited, this vulnerability enables an unauthorized, remote (internet-facing) actor to potentially access users’ personally identifiable information and make ...
- Atlassian security updates address three high severity vulnerabilities affecting multiple products
July 24, 2023
Atlassian has released the July 2023 Security Bulletin that addresses three high severity vulnerabilities in multiple products. CVE-2023-22505 and CVE-2023-22508 are Remote Code Execution (RCE) vulnerabilities affecting Confluence Server and Confluence Data Center. CVE-2023-22506 is an injection and RCE vulnerability affecting Bamboo Server and Bamboo Data Center. Read more… Source: NHS Digital
- FortiGuard Labs Discovers Multiple Vulnerabilities in Microsoft Message Queuing Service
July 24, 2023
Over the last few months, FortiGuard Labs has discovered and reported multiple vulnerabilities found in the Microsoft Message Queuing (MSMQ) service. Microsoft patched these vulnerabilities in the April and July 2023 security updates. These patches are rated as critical/important, and as always, we urge users to install them as soon as possible. Read more… Source: Fortinet Labs
- Exploitation of Citrix Zero-Day by Possible Espionage Actors (CVE-2023-3519)
July 20, 2023
Security and networking devices are “edge devices,” meaning they are connected to the internet. If an attacker is successful in exploiting a vulnerability on these appliances, they can gain initial access without human interaction, which reduces the chances of detection. As long as the exploit remains undiscovered, the threat actor can reuse it to gain access ...
- Google says Apple employee found a zero-day but did not report it
July 20, 2023
Google fixed a zero-day in Chrome that was found by an Apple employee, according to comments in the official bug report. While the bug itself is not newsworthy, the circumstances of how this bug was found and reported to Google are, to say the least, peculiar. According to a Google employee, the bug was originally found ...