Threat Feed
Daily intelligence on vulnerabilities, threat actors and geopolitical context — distilled from primary sources.
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highbug_reportVulnerabilityOctober Windows Server updates break Exchange OWA sign-in and mail flow
On-premises Exchange Server systems running on Windows Server 2019 and later, after installing October 2026 Windows Server security updates. All Exchange versions on affected Windows Server versions are potentially impacted.
highbug_reportVulnerabilityMicrosoft Exchange privilege escalation allows mailbox access (CVE-2026-96940)
Microsoft Exchange Server on-premises: Subscription Edition RTM, Exchange Server 2016 CU23, Exchange Server 2019 CU14 and CU15. Exchange Online already patched server-side; no customer action required.
criticalbug_reportVulnerabilityPaperCut NG/MF actively exploited; second emergency patch released
PaperCut NG and MF print management software versions 24, 25, and 26 on Windows, Linux, and macOS. CVE-2026-81578 (CVSS 8.8) authentication bypass and CVE-2026-82078 (CVSS 9.4) unsafe class-loading vulnerability can be chained for pre-auth RCE.
criticalbug_reportVulnerabilityVMware vCenter RCE (CVE-2026-59310) exploited for reverse SSH access
VMware vCenter Server versions prior to 9.1.0.0300 (9.1 branch), 9.0.2.0100 (9.0 branch), and 8.0 U3k/U2f (8.0 branch). The vulnerability affects the vCenter Syslog Server component and is exploitable by unauthenticated attackers with network access.
criticalbug_reportVulnerabilityVMware vCenter CVE-2026-59310 exploited in wild for RCE and persistence
Broadcom VMware vCenter Server (all unpatched versions prior to late July 2026 patch release). Affects 361+ confirmed victim IPs across 47 countries, primarily Germany, US, Turkey, Iran, and France.
highbug_reportVulnerabilityMicrosoft Exchange privilege escalation flaw requires immediate patching
Microsoft Exchange Server 2016, 2019, and Subscription Edition. All on-premises deployments of these versions are potentially affected.
criticalbug_reportVulnerabilityVeeam Backup & Replication RCE flaw (CVE-2026-44963) patched, CVSS 9.4
Veeam Backup & Replication software. Specific affected versions not disclosed in available data. Requires authenticated domain user access to exploit.