Update: Arctic Wolf has observed suspected exploitation of CVE-2026-1731 and has published its findings in an updated security bulletin, available here. On February 6, 2026,
On February 2, 2026, the Notepad++ open source project disclosed new details about a supply chain compromise that impacted its update delivery infrastructure between June and December 2025. The attack was attributed
On January 29, 2026, Ivanti released fixes for two critical zero-day code injection vulnerabilities affecting Ivanti Endpoint Manager Mobile (EPMM). The vulnerabilities, tracked as CVE-2026-1281
Summary On January 27, 2026, Fortinet released an advisory detailing a critical authentication bypass vulnerability affecting FortiOS, FortiAnalyzer, FortiManager, and FortiProxy products. Designated CVE-2026-24858, the
On January 28, 2026, SolarWinds released fixes for multiple vulnerabilities impacting Web Help Desk (WHD). WHD is an IT service management platform that may contain sensitive information, making it a valuable
On January 20, 2026, Oracle patched a maximum‑severity vulnerability in its Fusion Middleware suite affecting Oracle HTTP Server and the WebLogic Server Proxy Plug‑in, tracked as CVE‑2026‑21962.
On January 21, 2026, Cisco released fixes for a high-severity vulnerability impacting Cisco Unified Communications products that is under active exploitation, tracked as CVE-2026-20045. The flaw arises from improper
Starting on January 15, 2026, Arctic Wolf began observing a new cluster of automated malicious activity involving unauthorized firewall configuration changes on FortiGate devices. This
On January 13, 2025, Fortinet released fixes for a critical-severity FortiSIEM vulnerability (CVE-2025-64155) that stems from improper neutralization of special elements used in OS commands within
On January 13, 2026, Fortinet released an advisory describing a high-severity remote code execution vulnerability affecting its FortiOS and FortiSwitchManager products. According to Fortinet, the
On January 13, Microsoft released its January 2026 security update, addressing 112 newly disclosed vulnerabilities. Arctic Wolf has highlighted four vulnerabilities affecting Microsoft Windows and Office
On January 7, 2026, Trend Micro released a critical patch for Apex Central on-premises versions below Build 7190, addressing multiple vulnerabilities. The most severe of the vulnerabilities disclosed is CVE-2025-69258,
On January 7, 2026, fixes were released for a maximum severity vulnerability (CVE-2026-21858) impacting n8n, a workflow automation application primarily used with artificial intelligence. Labeled “Ni8mare” by the researchers
On December 19, 2025, MongoDB issued an advisory for CVE-2025-14847, known as “MongoBleed,” a high-severity vulnerability in the server’s zlib-based network compression functionality. This vulnerability affects how the database
On December 17, 2025, Cisco published an advisory detailing a new threat campaign identified on December 10, affecting the Cisco AsyncOS software used on Cisco
On December 18, 2025, WatchGuard released fixes for CVE-2025-14733, a critical out-of-bounds write vulnerability in the Internet Key Exchange daemon (iked) process used to establish VPN tunnels in Fireware OS, which powers
On December 17, 2025, SonicWall released fixes for an actively exploited medium-severity zero-day vulnerability in the SonicWall SMA1000 Appliance Management Console (AMC), tracked as CVE-2025-40602. The vulnerability
On December 11, 2025, Push Security published research detailing a newly observed browser-based phishing technique called ConsentFix. The name ConsentFix is derived from its similarity to the previously
On December 12, 2025, Arctic Wolf began observing intrusions involving malicious SSO logins on FortiGate appliances. Fortinet had previously released an advisory for two critical authentication
On December 9, 2025, Microsoft released its December 2025 security update, addressing 57 newly disclosed vulnerabilities. Arctic Wolf has highlighted three vulnerabilities affecting Microsoft Windows and Office
On December 9, 2025, Fortinet released an advisory detailing two critical authentication bypass vulnerabilities affecting FortiOS, FortiWeb, FortiProxy, and FortiSwitchManager. Designated CVE-2025-59718 and CVE-2025-59719, these
On December 3, 2025, the React team released fixes for a maximum severity vulnerability in React Server Components (RSC). The vulnerability, tracked as CVE-2025-55182, stems from unsafe
On November 19, 2025, Salesforce announced an investigation into unusual activity involving applications published by Gainsight, a company that provides customer success software integrated with Salesforce. In their advisory,
On November 13, 2025, open source reporting began detailing active exploitation of a silently patched Fortinet FortiWeb vulnerability. The flaw is a path traversal issue in the FortiWeb web application firewall (WAF) that
On November 11, 2025, Microsoft released its November 2025 security update, addressing 63 newly disclosed vulnerabilities. Arctic Wolf has highlighted two vulnerabilities affecting Microsoft Windows
On 11 November 2025, SAP published a security advisory as part of their November security patches, addressing a maximum severity vulnerability identified as CVE-2025-42890 in
On November 11, 2025, SAP published a security advisory as part of their November security patches, addressing a maximum severity vulnerability identified as CVE-2025-42890 in
Summary On October 23, 2025, Microsoft released an out-of-band security update for a critical vulnerability tracked as CVE-2025-59287. The flaw stems from the deserialization of
On October 15, 2025, F5 announced that in August 2025, they had discovered evidence of a highly sophisticated nation-state threat actor which had maintained long-term, persistent access to certain
On October 14, 2025, Microsoft released its October 2025 security update, addressing 175 newly disclosed vulnerabilities. Arctic Wolf has highlighted three vulnerabilities affecting Microsoft Windows
