Threat Intelligence Report — October 3, 2026 | 7 New KEVs · 229 Victims

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Report Date: 2026-10-03

New KEVs: 7  — unchanged vs last weekRansomware Victims: 229  ▲ +51 vs last week

7 vulnerabilities were added to the CISA Known Exploited Vulnerabilities catalog this period. Citrix products show the strongest concentration of risk signals this week. Ransomware activity is moderate with 229 new victims posted to leak sites over the last 7 days, with Thegentlemen posting the most victims.

On this page

  1. Patch This Week
  2. Top KEVs
  3. Security News
  4. Ransomware Activity
  5. Vendor-Specific Risks

Patch This Week

The top 3 KEVs to remediate right now, ranked by CISA deadline proximity, ransomware exploitation, and severity. These are confirmed exploited — if you do nothing else today, patch these.

  1. CVE-2026-88772 – Citrix NetScaler | CVSS 9.5 | EPSS 1.3% / 69th pct
    CISA deadline: 2026-09-30 (overdue by 3d) — Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.
  2. CVE-2026-88771 – Citrix NetScaler | CVSS 9.5 | EPSS 1.1% / 63th pct
    CISA deadline: 2026-09-30 (overdue by 3d) — Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.
  3. CVE-2026-86950 – Apple Multiple Products | CVSS 8.8 | EPSS 1.2% / 68th pct
    CISA deadline: 2026-10-02 (overdue by 1d) — Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.

Top KEVs

Vulnerabilities confirmed actively exploited in the wild by CISA — ranked by ransomware use, then severity. Patch these before anything else.

This Reporting Window

  • CVE-2026-104286 – Fortinet FortiMail | CVSS 9.8 (CRITICAL) | AV: Network | EPSS 1.8% / 78th pct | Ransomware Use: No
  • CVE-2026-76504 – Cisco Catalyst SD-WAN Manager | CVSS 9.8 (CRITICAL) | AV: Network | EPSS 1.6% / 75th pct | Ransomware Use: No
  • CVE-2026-88772 – Citrix NetScaler | CVSS 9.5 (CRITICAL) | AV: Network | EPSS 1.3% / 69th pct | Ransomware Use: No
  • CVE-2026-88771 – Citrix NetScaler | CVSS 9.5 (CRITICAL) | AV: Network | EPSS 1.1% / 63th pct | Ransomware Use: No
  • CVE-2026-102490 – Zammad GmbH Zammad | CVSS 9.4 (CRITICAL) | AV: Network | EPSS 0.3% / 16th pct | Ransomware Use: No
  • CVE-2026-102489 – Zammad GmbH Zammad | CVSS 9.4 (CRITICAL) | AV: Network | EPSS 0.6% / 46th pct | Ransomware Use: No
  • CVE-2026-86950 – Apple Multiple Products | CVSS 8.8 (HIGH) | AV: Network | EPSS 1.2% / 68th pct | Ransomware Use: No

Security News

Advisories, threat research, and incident reports from 12 sources across government, commercial research, and security journalism — prioritized by source credibility.

Ransomware Activity

Victim counts posted to ransomware group leak sites — use this to gauge which groups are most active and which sectors and regions are being targeted.

29 new victims posted today
7-day total: 229 via Ransomware.live

Most Active Groups

Thegentlemen 45 Storm 14 Safepay 12 Qilin 11 Incransom 10

Group Intelligence

  • Thegentlemen — The Gentlemen is a RaaS group that emerged in July–August 2025, rapidly claiming over 320 victims across 17+ countries by offering affiliates a 90% revenue share, deploying a Go-based locker against Windows, Linux, NAS, and BSD systems; a compromised C2 server in 2026 revealed more than 1,570 linked victims.
  • Safepay — SafePay emerged in September 2024 as a rapidly growing ransomware operation that explicitly disavows the RaaS model and manages all operations internally, claiming over 300 victims worldwide by mid-2025 with a high-profile early attack against UK telematics firm Microlise stealing 1.2 TB of data.
  • Qilin — Qilin ransomware was first observed in July of 2022. Qilin Ransomware is written in Golang and supports multiple encryption modes; all of which are controlled by the operator. Qilin actors practice double extortion – demanding payment for a decryptor, as well as for the non-release of stolen data.
  • Incransom — INC Ransom is a prolific ransomware-as-a-service operation active since July 2023 that systematically targets healthcare, government, education, and manufacturing sectors in North America and Europe, having posted over 200 victims in 2025 alone with no sector off-limits.

Most Targeted Sectors

Manufacturing 45 Healthcare 29 Technology 27 Professional Services 23 Other 22

Top Countries

US (78), DE (12), GB (11), BR (9), MX (7)

Notable Incidents

  • Slate Valley Unified School District (Education · US) — claimed by Kairos. The Slate Valley Unified Union School District is a public school district located in Fair Haven, Vermont, serving the communities of Benson, Castleton, Fair Haven, Hubbardton, Orwell, and West Haven. The data also inclu… Press coverage →
  • parkdental.com (Healthcare · GB) — claimed by Chaos. To the Management of Park Dental:

    Time is running out. Our previous attempts to establish a constructive dialogue regarding the security breach have been met with silence.

    If the management of Park Dental fails to get … Press coverage →

  • FTAPI Software (Technology · US) — claimed by Thegentlemen. ftapi.com zoominfo.com/c/ftapi-software/346927067 FTAPI (founded 2010, Munich, Germany) is a software company offering a secure, GDPR-compliant platform for exchanging sensitive business data and automating workflows — e… Press coverage →
  • sumperk.cz (Retail & E-Commerce · CZ) — claimed by Safepay. The official website, sumperk.cz, serves as the city's principal digital information and service portal for residents, businesses, visitors and other … Press coverage →
  • northeastrehab.com (Healthcare · US) — claimed by Braincipher. [AI generated] N/A

    I don't have reliable, verified information about a specific company operating at this domain. Rather than provide potentially inaccurate details about its services, industry specifics, or operational… Press coverage →

Vendor-Specific Risks

Vendors with confirmed KEV exploitation this week — the stacked bar shows how that exposure breaks down across exploited CVEs (red), critical CVEs to watch (orange), and news mentions (yellow). Prioritize patching vendors with the largest red segment.

Citrix 4 Zammad Gmbh 2 Cisco 1 Apple 1 Fortinet 1 KEVs CVEs Mentions

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