Microsoft has fixed Outlook sign-in and mail delivery issues on Exchange Server systems after installing the October 2026 Windows Server security updates. Microsoft acknowledged this known issue in mid-October, confirming that users had trouble accessing email or signing in to Outlook after installing the latest updates on systems running Windows Server 2019 and later. As explained at the time, the sign-in and mail flow issues are caused by a new default limit on the amount of memory Endpoint Mapper uses when handling Endpoint Lookup calls, introduced by the October 2026 updates. "After installing the October 2026 Windows security update [..], some on-premises Exchange servers might experience issues accessing or sending email. Users might be unable to sign in to Outlook on the web (OWA), or email messages sent from Outlook might remain in the Outbox and not be delivered. Additionally, Exchange might experience issues accessing mailboxes during mailbox replication," Microsoft said at the time.
The U.S. Cybersecurity and Infrastructure Security Agency (CISA) Tuesday added two security flaws impacting Cisco BroadWorks and Openwave Messaging Webtop Media Transcoder to its Known Exploited Vulnerabilities (KEV) catalog, citing evidence of active exploitation. Details of the vulnerabilities are below - CVE-2026-20320 (CVSS score: 7.5) - An improper restriction of XML external entity
Nitori, a major Japanese furniture and home accessories retailer, discovered that an attacker accessed a system on its network and may have stolen 37.62 million customer records. The intrusion was detected on November 6, and the company blocked the unauthorized access. However, an investigation into the incident revealed that the attacker likely had access to the system since mid-October. Nitori, often called the “IKEA of Japan,” is a major furniture and home furnishings retailer that operates 879 stores in Japan and another 219 stores across China, South Korea, Taiwan, Thailand, Singapore, and Hong Kong. The firm has an annual revenue of $5.8 billion. According to the company's notification, the incident impacts individual customers, corporate members, and non-members who placed orders through official Nitori stores and online shops.
A critical authentication bypass vulnerability in Xen Orchestra is being actively exploited in attacks that could grant administrator privileges and allow takeover of XCP-ng virtualization hosts. Xen Orchestra is a web-based management platform developed by French software company Vates, used to manage XCP-ng virtualization environments, including virtual machines, hosts, and pools. The vulnerability, tracked as VSA-2026-062, affects Xen Orchestra and the Xen Orchestra Appliance (XOA) and allows remote attackers with network access to the management interface to bypass authentication using a specially crafted cookie. A CVE identifier and CVSS score have not been assigned yet. According to a Vates security advisory, the flaw stems from how Xen Orchestra processes authentication tokens sent through REST API requests.
SAP patched 35 vulnerabilities in its November 2026 security updates, including four maximum-severity issues affecting its NetWeaver, Web Dispatcher, and Gateway software. The company addressed memory corruption (CVE-2026-76964) and missing authentication (CVE-2026-120017) flaws in the NetWeaver Application Server ABAP's Internet Communication Manager and SAML2 Service Provider components. NetWeaver is the core app platform that underpins SAP's business software and handles application integration, authentication, user management, and data processing. The other two maximum severity vulnerabilities stem from a broken access control weakness (CVE-2026-89103) in SAP Gateway and a memory corruption issue (CVE-2026-89126) in SAP Web Dispatcher. Gateway is a core framework that enables external apps to securely connect to SAP backend systems, while Web Dispatcher (deployed in almost every enterprise SAP environment) is a specialized component that acts as a load balancer and reverse proxy for web requests entering an SAP system architecture.
Cybersecurity company Barracuda Networks warned that attackers have begun exploiting two recently patched Email Security Gateway (ESG) vulnerabilities that let them run commands with root privileges. Barracuda released security updates to address the two flaws (tracked as CVE-2026-116606 and CVE-2026-111560) one week ago. The first stems from an Email Security Gateway (ESG) authentication weakness that can be exploited to modify an appliance's global configuration, while the second lets unauthenticated attackers inject OS commands that execute with root privileges. Barracuda also said that successful attacks require access to the administrative user interface (Admin UI) of targeted devices and advised customers to restrict access to trusted internal networks and use appropriate network access controls to limit exposure.
Google has released emergency security updates to patch a new Chrome vulnerability exploited in zero-day attacks, the eighth such flaw since the start of the year. "Google is aware that an exploit for CVE-2026-125350 exists in the wild," the company said in a Monday security advisory. As Google explained, this flaw stems from a Use-After-Free (UAF) weakness in the XML component of the Google Chrome web browser, which occurs when the browser's XML parser processes data, deletes an object from the computer's memory, but fails to clear the pointer referencing that object. Attackers can exploit this high-severity memory corruption vulnerability when the browser later tries to use or read that "freed" memory space to manipulate the memory layout and execute malicious code. While Google has found evidence of attackers exploiting this zero-day bug in the wild, it has not shared additional details about these incidents.
French software company Vates VMS has warned of a critical security vulnerability in Xen Orchestra that it said is being actively exploited in the wild. The authentication bypass flaw, which does not yet have a CVE identifier, is tracked as VSA-2026-062. "REST cookie parsing turns authenticationToken=j:%7B%7D into {}," Vates VMS said in an alert. "REST authentication passes that object to the
At some point your security will fail. This isn’t pessimism. It’s not because your team and tools aren’t sophisticated enough. It’s the reason we have detections in the first place. And, it’s why once we accept that prevention has its limits, we arrive at an interdiction strategy: finding and disrupting what got in. After the alert The alert tells you something happened. However, gaining
An iMessage flaw could let a remote attacker join a group chat and receive its messages, Apple said yesterday, and it released updates to fix it. The updates also fix a separate iMessage flaw that could let someone added to a group access messages sent before they joined. As of today, other updates released yesterday for the iPhone XS, XS Max and XR, the iPad (7th generation) and some Apple
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