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HIGH: Issabel Framework RCE (CVE-2026-89026) actively exploited; allows unauthenticated command execution◆HIGH: Microsoft patches record 974 CVEs; emergency fixes issued after Patch Tuesday glitches◆HIGH: Browser extension hijacks AI assistants in Chrome, Edge, Comet, Opera Neon, Claude◆HIGH: Iranian state hackers deploy CHOSEN BRICK malware targeting dissidents worldwide◆HIGH: Spanish regulator reports first agentic AI-powered data breach via autonomous agent◆HIGH: HIGH — CISCO SEG SQL injection (CVE-2026-76461) added to CISA KEV; root-level RCE via unauthenticated remote attack◆HIGH: HIGH — ACRONIS cPanel backup plugin (CVE-2026-87886) actively exploited for Linux privilege escalation◆HIGH: HIGH — KREMLIN banking malware hijacks Chrome & Edge to steal credentials and session tokens from Brazilian targets◆HIGH: Issabel Framework RCE (CVE-2026-89026) actively exploited; allows unauthenticated command execution◆HIGH: Microsoft patches record 974 CVEs; emergency fixes issued after Patch Tuesday glitches◆HIGH: Browser extension hijacks AI assistants in Chrome, Edge, Comet, Opera Neon, Claude◆HIGH: Iranian state hackers deploy CHOSEN BRICK malware targeting dissidents worldwide◆HIGH: Spanish regulator reports first agentic AI-powered data breach via autonomous agent◆HIGH: HIGH — CISCO SEG SQL injection (CVE-2026-76461) added to CISA KEV; root-level RCE via unauthenticated remote attack◆HIGH: HIGH — ACRONIS cPanel backup plugin (CVE-2026-87886) actively exploited for Linux privilege escalation◆HIGH: HIGH — KREMLIN banking malware hijacks Chrome & Edge to steal credentials and session tokens from Brazilian targets◆

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HIGH/ SEPTEMBER 17, 2026TODAY’S BRIEFING — #181

Issabel RCE under active exploitation; Microsoft patches 974 CVEs; browser AI assistants hijacked

Issabel Framework vulnerability CVE-2026-89026 (CVSS 9.8) actively exploited for unauthenticated OS command execution. Microsoft issued record 974-CVE patch batch including critical flaws. Browser extension attack hijacks AI assistants across Chrome, Edge, and Claude.

CVE-2026-89026Issabel Framework — Unauthenticated OS command execution; actively exploited; CVSS 9.8/9.3 CVE-2026-69730Microsoft — Included in 974-CVE patch batch; details in Krebs on Security article CVE-2026-58704Google Android — Zero-day privilege escalation; exploited in targeted attacks; patched September 15 CVE-2026-76461Cisco Asyncos — SQL injection RCE; added to CISA KEV; patched; federal remediation due 2026-09-17

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181 briefings published

26 vuln reports

59 tools indexed

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CVE	Product	CVSS	Exploited	Patch
CVE-2026-20079	Cisco Secure Firewall Management Center (FMC) And Security Cloud Control (SCC) Firewall Management	10	KEV	advisory
CVE-2026-85706	GitLab Community Edition And Enterprise Edition	10	KEV	—
CVE-2026-75650	Adobe Commerce And Magento	10	KEV	✓ available
CVE-2026-49869	Kestra OSS	10	KEV	advisory
CVE-2026-83548	SonicWall SMA1000 Appliances	10	KEV	advisory

KEV = listed in CISA catalog · IN WILD = active exploitation reported · PoC = public exploit code

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HighSeptember 17, 2026

Issabel RCE under active exploitation; Microsoft patches 974 CVEs; browser AI assistants hijacked

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HighSeptember 16, 2026

Cisco SEG SQL injection joins KEV; Acronis Linux flaw exploited; banking malware targets browsers

Cisco Secure Email Gateway SQL injection added to CISA KEV; Acronis cPanel plugin flaw exploited; Brazilian banking malware KREMLIN targets Chrome and Edge for session theft.

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HighSeptember 15, 2026

Hardware attack breaks Intel/AMD confidential computing; Gitea RCE exploited across six countries

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MediumSeptember 14, 2026

Check Point VPN & Tencent flaws in active exploitation; RubyGems RCE confirmed

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Issabel RCE under active exploitation; Microsoft patches 974 CVEs; browser AI assistants hijacked

Critical vulnerabilities

Daily briefings

Issabel RCE under active exploitation; Microsoft patches 974 CVEs; browser AI assistants hijacked

Cisco SEG SQL injection joins KEV; Acronis Linux flaw exploited; banking malware targets browsers

Hardware attack breaks Intel/AMD confidential computing; Gitea RCE exploited across six countries

Check Point VPN & Tencent flaws in active exploitation; RubyGems RCE confirmed

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