Vulnerabilities, threats and incidents, security advisories from CERT-EU, ENISA, CISA and NCSC, AI security and regulation (NIS2, CRA).
CISA added two Zammad vulnerabilities to its Known Exploited Vulnerabilities catalog after confirming active exploitation. CVE-2026-102489 is a session fixation flaw and CVE-2026-102490 involves improper privilege management in the Zammad helpdesk/customer service platform. Federal agencies must remediate under Binding Operational Directive 26-04, and CISA urges all organizations to prioritize these fixes.
CISA added CVE-2026-104286, a path traversal vulnerability in Fortinet FortiMail, to its Known Exploited Vulnerabilities (KEV) Catalog after confirming active exploitation in the wild. Under Binding Operational Directive 26-04, federal civilian agencies must prioritize patching this vulnerability on internet-exposed assets, especially where it could grant full control of the system. CISA also recommends all organizations, not just federal agencies, prioritize remediation of KEV-listed flaws.
GitHub Security Lab built an open-source 'Taskflow Agent' that uses custom AI prompt workflows to audit code for vulnerabilities, and used it to find and report over 24 vulnerabilities in Android applications. Two detailed examples show the agent finding a location-tracking flaw in the OsmAnd navigation app and an account-takeover chain in the Wikipedia Android app via a deeplink parsing bug. The team notes LLMs are strong at finding complex logic vulnerabilities and understand API behavior well, but struggle to correctly judge severity and often produce false positives, so findings still require human review. The taskflows are open source and can be run on any GitHub repository via a Copilot-powered codespace script, though running them consumes premium model requests and can take hours.
Cisco Talos disclosed a China-nexus threat cluster, tracked as UAT-11587, that has targeted government, defense, diplomatic and policy organizations across Taiwan, India, the Philippines, Cambodia, Pakistan, Thailand, Myanmar and Syria since September 2025. The group delivers a previously undocumented Rust-compiled Windows backdoor called Antino via spear-phishing with spoofed senders and fake Gmail attachment widgets. Antino communicates covertly through Microsoft 365 (Outlook/OneDrive via Microsoft Graph) instead of a traditional C2 server, and the group heavily relies on Cloudflare infrastructure for delivery and staging. Talos found roughly 350 compromised endpoints across eight countries, with the largest wave hitting around 57 Indian endpoints in a single two-day period.
CERT-EU has updated its advisory on critical vulnerabilities in Microsoft SharePoint Server, confirming active exploitation of CVE-2026-50522 (CVSS 9.8), a deserialisation flaw allowing remote code execution. This is part of a wider series of recently patched critical bugs — CVE-2026-32201, CVE-2026-45659, CVE-2026-56164 and CVE-2026-58644 — affecting on-premise SharePoint Server instances, some exploitable without authentication.
Microsoft Threat Intelligence documented exploitation of CVE-2026-73570, an unauthenticated OS command-injection flaw in the Zimbra Collaboration Suite's SNMP notification path. Attackers triggered it via specially crafted emails against internet-facing servers running the optional zimbra-snmp package with SNMP notifications enabled, requiring no authentication or user interaction. Post-exploitation activity included JSP webshell deployment, privilege escalation to root, persistent access, credential and mailbox theft, lateral movement across Zimbra clusters, and custom remote-access malware. Zimbra fixed the issue in version 10.1.20 (released July 20, 2026); the CVE was publicly disclosed August 13, 2026, and Microsoft observed scanning and exploitation activity during the gap between patch availability and disclosure, as well as after.
On 9 September 2026, Check Point released emergency hotfixes for two critical vulnerabilities (CVE-2026-85102 and CVE-2026-85103), both with CVSS 9.8, affecting Security Gateway, Security Management Server, and Spark Firewall deployments using Remote Access VPN or Site-to-Site VPN. Both flaws allow unauthenticated remote attackers to execute arbitrary code on affected appliances. CERT-EU urges immediate patching, prioritising internet-facing and perimeter devices.
Citrix disclosed 8 vulnerabilities affecting customer-managed NetScaler ADC and NetScaler Gateway, including 2 critical unauthenticated RCE flaws with CVSS 9.5 that Citrix confirms are being actively exploited. CERT-EU urges immediate patching and compromise assessment for internet-facing appliances. Other flaws include HTTP request smuggling, memory overflow bugs leading to RCE/DoS, a policy bypass, and a TCP ISN prediction issue.