August 2026 CVE Landscape
Insikt Group catalogs 73 high-impact August 2026 CVEs (43 Very Critical), including PaperCut, Zimbra, and Metabase flaws actively exploited or weaponized.
Recorded Future's Insikt Group identified 73 high-impact vulnerabilities in August 2026, 43 rated Very Critical, spanning 45 vendors with Microsoft accounting for roughly 11%. 31 vulnerabilities surfaced via CISA's KEV catalog, with others validated via open sources, vendor telemetry, and honeypot data. New Nuclei detection templates were released for CVE-2025-62593 (Ray), CVE-2026-72898 (Metabase), and CVE-2026-9198 (IBM Langflow). The report also highlights two AI-assisted operations: UAT-10147 exploited Zimbra, AjaxPro, Nacos, and Telerik servers before using DeepAudit and PentestGPT post-compromise, while a separate Chinese-speaking actor weaponized Hermes Agent and DeepSeek in a failed attempt.
- 73 high-impact CVEs identified, 43 rated Very Critical, down 14% from July
- 31 vulnerabilities added to CISA KEV catalog; Microsoft accounted for ~11% of all CVEs
- Nuclei templates published for Ray (CVE-2025-62593), Metabase (CVE-2026-72898), IBM Langflow (CVE-2026-9198)
- UAT-10147 used AI tooling (DeepAudit, PentestGPT) post-compromise against Zimbra and other servers
- Prior PaperCut CVEs CVE-2026-81578 and CVE-2026-82078 tied to AI-orchestrated campaign
Vulnerabilities mentioned
All| CVE | Vulnerability | CVSS | EPSS | Signals | Published |
|---|---|---|---|---|---|
| CVE-2025-62593 | Actively Exploited Browser-Based RCE in Ray AI Compute Engine | 9.4 | 60% | KEVPoC | KEV |
| CVE-2026-3395 | A flaw has been found in MaxSite CMS up to 109.1 | 5.5 | 4% | ||
| CVE-2026-59800 | 9Router before 0.4.44 contains an OS command injection vulnerability in the unauthenticated POST /api/tunnel/tailscale-install endpoint (this route is not… | 9.2 | 2% | ||
| CVE-2026-72898 | Unauthenticated SQL Injection in Metabase Grants Admin Access | 10.0 | 99% | KEVPoC ×3 | KEV |
CVE-2026-82078+1 related CVE | Unsafe Reflection RCE in PaperCut NG/MF, Chained with Auth Bypass in Attacks | 9.4 group max | 61% | KEV | KEV |
| CVE-2026-9198 | Unauthenticated RCE Chain in IBM Langflow OSS 1.0.0-1.10.0 | 9.8 | 29% | KEVPoC | KEV |
From the original article
7 min read at recordedfuture.com
In August 2026, Insikt Group® identified 73 high-impact vulnerabilities that should be prioritized for remediation, 43 of which had a Very Critical Recorded Future Risk Score. This represents a 14% decrease from last month.
By Insikt Group® · recordedfuture.com
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