Weekly Roundup Highlights Critical Vulnerabilities in Zoom, nginx, SonicWall, and Microsoft Products
Security NEXT has released its weekly ranking of the ten most-read articles published between July 12 and July 18, 2026. The list reflects reader interest in newly disclosed vulnerabilities, vendor patches, and real-world security incidents.
The highest-ranked story reported a serious vulnerability in the Windows edition of Zoom that was subsequently resolved in the latest version. Second place went to coverage of a cyber attack that caused system outages at Nichirei, resulting in delays to frozen-food shipments.
Microsoft’s monthly Patch Tuesday update, which addressed more than 500 vulnerabilities including zero-day flaws, ranked third. Fourth place highlighted multiple vulnerabilities in nginx, one of which was rated critical, prompting the release of updated versions.
Fifth on the list was a zero-day vulnerability affecting the SonicWall SMA1000 series, accompanied by guidance to apply updates and conduct compromise assessments. A sixth article examined the potential for information leakage at a subsidiary of TV Asahi and the ongoing investigation into its scope.
Additional widely read reports included a U.S. security authority alert on five actively exploited vulnerabilities, an SSRF flaw in GNU Wget that warrants caution in integrated environments, and a privilege-escalation issue in Microsoft Defender that has now been patched.
The tenth story covered a Chrome security update that resolved 15 vulnerabilities, two of which were classified as critical.
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- Microsoft Defender privilege-escalation vulnerability patched
- Firefox critical vulnerability with public exploit code but no confirmed attacks
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- Dell PowerFlex serious flaw fixed in June update
- CISA warns of active exploitation of FortiSandbox and SharePoint vulnerabilities
- SAP releases monthly updates with 16 new advisories, three rated critical
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WordPress Patches High-Severity XSS2Shell Flaw Enabling Remote Code Execution (CVE-2026-64638)
WordPress has released a fix for a high-severity vulnerability in its core that can turn a malicious login attempt into remote PHP code execution on the server. The flaw, tracked as CVE-2026-64638 and rated 8.9 on CVSS, is named XSS2Shell and begins as a reflected cross-site scripting issue on the authentication screen. An unauthenticated attacker can submit a specially crafted username that bypasses sanitization mechanisms due to differences in how PHP and WordPress interpret certain characters, allowing controlled HTML elements to be injected into the login page. This leads to JavaScript execution in the site domain, and when an authenticated administrator visits a prepared page, the attacker can abuse the existing session to authorize application credentials and upload arbitrary PHP code. The patch is included in WordPress 7.0.3 released on August 6, with backports available for branches as old as 4.7. No public exploitation has been confirmed yet, but the technical details make immediate updating a priority for site administrators.
Google Releases Chrome 151 Fixing 41 Vulnerabilities Including Six Critical Flaws
Google has issued Chrome 151 to address 41 security vulnerabilities, six of which are rated critical and could lead to memory corruption, browser crashes, and remote code execution. The update covers Windows, macOS, and Linux platforms with versions 151.0.7922.108 and 151.0.7922.109. Two use-after-free flaws in the WebGL component, tracked as CVE-2026-19137 and CVE-2026-19170, allow continued memory access after deallocation. Additional critical issues affect the Aura, Skia, Views, and ANGLE components under CVE-2026-19149, CVE-2026-19154, CVE-2026-19172, and CVE-2026-19157. Google has withheld technical details and proof-of-concept code for several flaws to limit exploitation while the rollout completes. Users are advised to check for updates immediately through the browser's About section.
Dell Fixes 70 Vulnerabilities in VSI for VMware vSphere Including Two Critical Flaws
Dell has released an update addressing 70 vulnerabilities in Dell Virtual Storage Integrator for VMware vSphere Client, two of which are product-specific and rated critical. The advisory published on August 6, 2026, covers both native issues and flaws inherited from third-party components. CVE-2026-67261 allows unauthenticated remote attackers to execute arbitrary OS commands with root privileges via the IAPI component. CVE-2026-54489 enables session hijacking by exposing active session credentials without authentication. The product integrates Dell storage arrays with VMware vSphere environments and is widely used in enterprise virtualization deployments. Administrators are urged to apply the latest version immediately to mitigate the risks of full system compromise and unauthorized administrative access.
Top 10 Security Stories: WordPress XSS Flaw, PHP Vulnerabilities, and VMware ESX Issues Lead Weekly Roundup
Security NEXT has published its weekly ranking of the most viewed articles for the period from August 2 to August 8, 2026. The list highlights critical vulnerabilities affecting widely used platforms including WordPress, PHP, pgAdmin 4, VMware ESX, and Chrome. Several entries focus on newly released security updates and ongoing exploitation warnings issued by US authorities. The ranking also includes real-world incidents such as credit card skimming by employees and data leaks caused by phishing attacks. This weekly overview reflects the topics that drew the highest attention from the Japanese cybersecurity community during the specified week.