Weekly Roundup: Critical Vulnerabilities Hit VMware ESX, FortiOS, Chrome, fastjson, Cisco FMC and Ruby on Rails
Security NEXT has released its weekly ranking of the most-read articles published between July 26 and August 1, 2026. The list is led by reports of serious vulnerabilities in several major enterprise and consumer platforms.
The top story covers newly disclosed critical flaws in VMware ESX and VMware vCenter, accompanied by official patches. Second place went to confirmation from U.S. authorities that threat actors are actively exploiting vulnerabilities in FortiOS and VeloCloud Orchestrator.
Google issued a large security update for Chrome that resolves 370 vulnerabilities. A separate entry highlights a flaw in the Java data-conversion library fastjson that has already been observed in exploitation attempts.
Apple released iOS 26.6 and iPadOS 26.6, addressing 87 security issues. Cisco warned customers about a vulnerability in its firewall management product Cisco FMC that is already being exploited in the wild.
Other notable items include a cyber-attack on an ANA Group online store that may have resulted in the leakage of personal information, a serious vulnerability in OpenAM, an update for Node.js fixing 11 issues, and a critical flaw named KindaRails2Shell affecting Ruby on Rails.
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Dart and Flutter SDKs Patch Critical TLS Flaw Tied to Compromised eMudhra Certificates
Dart and Flutter teams released updates to block compromised intermediate certificates from the eMudhra certificate authority. The flaw affects applications built for Android, Windows, and Linux that rely on dart:io for HTTPS connections. Stable releases include Dart 3.13.7 and Flutter 3.47.8, while beta channels received Dart 3.14.0-315.3.beta and Flutter 3.50.0-0.2.pre. The root cause traces to insufficient randomness during key generation for eight eMudhra intermediate CAs disclosed in October 2026. Because dart:io uses its own BoringSSL implementation rather than system revocation lists, applications must be rebuilt and redistributed to users. Additional changes improve root certificate handling on Android 14 and later via Conscrypt APEX modules.
Vulnerability Management Evolution: From Manual Scans to Continuous Threat Exposure Management
This final installment of the Vulnerability Management for Beginners series examines how the discipline has transformed over recent years into an essential component of organizational risk management. The article highlights the dramatic increase in disclosed vulnerabilities, now approaching 48,000 per year, and stresses that fewer than one percent pose real-world risk. It details the shift toward automated asset inventory integrated with SIEM, EDR, and CMDB systems, alongside multi-factor prioritization combining CVSS, EPSS, KEV lists, and FSTEC methodologies. New practices such as EASM, automated penetration testing, BAS, and CTEM are presented as extensions of a mature foundational process rather than replacements. The piece also covers regulatory tightening in Russia through FSTEC Order No. 117, mandatory remediation timelines, and the impact of AI on both defense and attack surfaces. It concludes with a practical Monday-morning action list focused on asset counting, threat feed integration, SLA definition, and cross-team coordination between IT and security.
Fortinet Discloses Eight FortiOS Vulnerabilities Including Three Critical Flaws
Fortinet has published security advisories detailing eight vulnerabilities affecting its FortiOS operating system used in UTM appliances. Three of the issues received the highest severity rating of Critical. CVE-2026-126259 allows unauthenticated command execution with super-admin privileges in FGSP combined with configuration synchronization or auto-scale setups via crafted HA packets. CVE-2026-126254 stems from integer truncation in the BGP daemon and can propagate malicious attributes from configured iBGP peers. CVE-2026-126253 enables authentication bypass in the OSPF daemon, permitting unauthenticated LSA injection. The remaining five vulnerabilities were assigned lower severity ratings. Administrators are urged to apply the available patches promptly.
Microsoft Patches Over 1,000 Vulnerabilities in November 2026 Patch Tuesday Release
Microsoft has issued its November 2026 monthly security updates, addressing a total of 1,093 vulnerabilities across Windows, Office, Azure, SQL Server, SharePoint Server, Exchange Server, and Developer Tools. The update also covers a vulnerability in the third-party Tencent RapidJSON library identified as CVE-2026-124586. Among the fixes, 63 vulnerabilities received the highest severity rating of Critical, while 1,029 were rated Important. Privilege escalation issues accounted for the largest share with 535 cases, followed by 296 remote code execution flaws. Several vulnerabilities have already been confirmed as exploited in the wild. The release follows the standard Patch Tuesday schedule on the second Tuesday of the month.