Friday, June 5, 2026 Archive

Archived Security Snapshot

Critical vulnerabilities, curated daily for security professionals

Archived Security Brief

Friday's disclosures center on Microsoft Azure HorizonDB (CVE-2026-48567, CVSS 10) and Tautulli (CVE-2026-43986, CVSS 9.9), alongside a cluster of WordPress plugin and infrastructure vulnerabilities. The brief covers 17 critical CVEs, up 240% from the prior day's 5, and 82 high-priority CVEs, a 52% increase from 54. Additional critical issues include OSNexus QuantaStor SDS Manager (CVE-2026-10880, CVSS 9.8) and Microsoft Windows (CVE-2025-71316, CVSS 9.8), spanning storage management, database, and operating system layers. Remote code execution and authentication bypass patterns dominate, affecting web applications, routers, and enterprise data platforms. No vendor patches were available at disclosure time, so defenders should prioritize compensating controls and monitor for vendor advisories on the highest-severity items.

  • Microsoft Azure HorizonDB carries a maximum-severity flaw (CVE-2026-48567, CVSS 10), the day's most impactful disclosure
  • Critical CVEs rose 240% to 17, up from 5 the prior day
  • High-priority CVEs increased 52% to 82, up from 54
  • Remote code execution and authentication bypass affect Tautulli (CVE-2026-43986), OSNexus QuantaStor, and multiple WordPress plugins
  • Patch availability stands at 0% across the disclosed set, requiring interim mitigations
  • 6 CVEs are listed as actively exploited, including Ivanti vTM (CVE-2024-7593) and Palo Alto PAN-OS (CVE-2026-0257)

Immediate action: Prioritize Microsoft Azure HorizonDB, Microsoft Windows, OSNexus QuantaStor, and Tautulli deployments for immediate review, and audit exposed WordPress plugins and Neterbit routers. With no patches yet available, apply network segmentation, access restrictions, and enhanced monitoring while tracking vendor advisories for the actively exploited Ivanti vTM, Palo Alto PAN-OS, and Oracle WebLogic issues.

How to read this brief

CVSS score (e.g. 9.1) — severity from 0–10. Red marks critical (9+), orange high (7–8.9).

Exploitability — how hard the flaw is to attack, read from the CVSS vector:

  • Network / Adjacent / Local / Physical — how close an attacker must get. Network means reachable over the internet.
  • No / Low / High privileges — the access they need first. No privileges means no login required.
  • No interaction / User interaction — whether a victim has to do something (open a file, click a link). No interaction means fully automatable.

The lower the bar on all three, the easier to exploit at scale — “Network · No privileges · No interaction” is the worst case: hit from anywhere, no credentials, no victim action.

Actively exploited — confirmed under attack in the wild (CISA’s Known Exploited Vulnerabilities catalog). Prioritize these regardless of score.

EPSS · Nth percentile — FIRST.org’s estimated chance a flaw is exploited within 30 days. We flag it only in the top 10% — a statistical signal it’s unusually likely to be targeted, separate from whether attacks are confirmed.

💡 Tip: Swipe CVE cards left to ⭐ star, right to ❌ remove

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