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HIGH: Cisco SD-WAN Manager actively exploited; CISA KEV added 2026-09-30◆HIGH: Zimbra ZCS webshell attacks confirmed; unauthenticated OS command injection◆HIGH: Zammad zero-day chain (CVE-2026-102489/102490) led to DIVD breach◆HIGH: 543,000+ valid credentials exposed in public GitHub repositories◆HIGH: MikroTik RouterOS critical pre-auth RCE in CVE-2026-84411, -67276, -86060◆MED: Star Blizzard — 100+ orgs targeted with fake event invites deploying backdoors on Windows◆MED: Spectre-v2 BTR — new CPU vulnerability leaks Linux memory; affects Intel, AMD, Arm processors◆MED: 101 malicious npm packages trap developers in WhatsApp group subscriber campaign (PhantomSub)◆HIGH: Cisco SD-WAN Manager actively exploited; CISA KEV added 2026-09-30◆HIGH: Zimbra ZCS webshell attacks confirmed; unauthenticated OS command injection◆HIGH: Zammad zero-day chain (CVE-2026-102489/102490) led to DIVD breach◆HIGH: 543,000+ valid credentials exposed in public GitHub repositories◆HIGH: MikroTik RouterOS critical pre-auth RCE in CVE-2026-84411, -67276, -86060◆MED: Star Blizzard — 100+ orgs targeted with fake event invites deploying backdoors on Windows◆MED: Spectre-v2 BTR — new CPU vulnerability leaks Linux memory; affects Intel, AMD, Arm processors◆MED: 101 malicious npm packages trap developers in WhatsApp group subscriber campaign (PhantomSub)◆

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HIGH/ OCTOBER 1, 2026TODAY’S BRIEFING — #195

Cisco SD-WAN, Zimbra, Zammad under attack; active exploitation confirmed

Cisco Catalyst SD-WAN Manager zero-day actively exploited for admin access, Zimbra webshell deployments confirmed

CVE-2026-76504Cisco Catalyst Sd-Wan Manager — Authentication bypass; actively exploited for admin privilege escalation CVE-2026-73570Synacor Zimbra Collaboration Suite — OS command injection (CVSS 8.9); weaponized for webshell deployment and mailbox access CVE-2026-102489Zammad Ticketing System — Zero-day; part of vulnerability chain exploited in DIVD network breach CVE-2026-102490Zammad Ticketing System — Zero-day; part of vulnerability chain exploited in DIVD network breach

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195 briefings published

28 vuln reports

59 tools indexed

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Critical vulnerabilities

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CVE	Product	CVSS	Exploited	Patch
CVE-2026-5430	WSO2 Multiple Products	10	KEV	advisory
CVE-2026-76460	Cisco Identity Services Engine	10	KEV	advisory
CVE-2026-93952	Arista VeloCloud Orchestrator	10	KEV	advisory
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	—

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

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HighOctober 1, 2026

Cisco SD-WAN, Zimbra, Zammad under attack; active exploitation confirmed

Cisco Catalyst SD-WAN Manager zero-day actively exploited for admin access, Zimbra webshell deployments confirmed

Zero-DayVuln ExploitCredential TheftAPTTechnologyGovernmentFinance

MediumSeptember 30, 2026

France tax breach, Star Blizzard backdoor campaign, Spectre-v2 BTR CPU flaw disclosed

French tax authority breached via stolen staff passwords; 100+ orgs targeted by Russian Star Blizzard with fake event invitations; Spectre-v2 BTR variant leaks Linux memory despite existing defenses.

APTData BreachZero-DayMalwareGovernmentTechnology

HighSeptember 29, 2026

Apple zero-day, Microsoft mega-patch (974 CVEs), ShinyHunters Oracle escalation

Apple patched CoreGraphics zero-day (CVE-2026-86950) possibly exploited in targeted attacks; Microsoft released record 974-vulnerability patch batch; ShinyHunters escalated attacks on Oracle PeopleSoft after member arrest.

Zero-DayVuln ExploitAPTData BreachTechnologyFinance

HighSeptember 28, 2026

Citrix NetScaler, Oracle, Cloudflare RCEs under active exploitation; WAF bypasses escalate risks

Two Citrix NetScaler RCE zero-days (CVE-2026-88771, CVE-2026-88772) actively exploited in wild; ShinyHunters gang bypasses WAF rules to resume Oracle PeopleSoft CVE-2026-35273 attacks; Cloudflare fixes cross-tenant container data exposure.

Zero-DayVuln ExploitCredential TheftTechnologyGovernment

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Cyber threatintelligence,verified &prioritized.

Cisco SD-WAN, Zimbra, Zammad under attack; active exploitation confirmed

Critical vulnerabilities

Daily briefings

Cisco SD-WAN, Zimbra, Zammad under attack; active exploitation confirmed

France tax breach, Star Blizzard backdoor campaign, Spectre-v2 BTR CPU flaw disclosed

Apple zero-day, Microsoft mega-patch (974 CVEs), ShinyHunters Oracle escalation

Citrix NetScaler, Oracle, Cloudflare RCEs under active exploitation; WAF bypasses escalate risks

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