Report Date: 2026-10-04
New KEVs: 6 ▼ -1 vs last weekRansomware Victims: 228 ▲ +58 vs last week
6 vulnerabilities were added to the CISA Known Exploited Vulnerabilities catalog this period. Zammad Gmbh products show the strongest concentration of risk signals this week. Ransomware activity is moderate with 228 new victims posted to leak sites over the last 7 days, with Thegentlemen posting the most victims.
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.
- CVE-2026-86950 – Apple Multiple Products | CVSS 8.8 | EPSS 1.2% / 68th pct
CISA deadline: 2026-10-02 (overdue by 2d) — 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. - CVE-2026-76504 – Cisco Catalyst SD-WAN Manager | CVSS 9.8 | EPSS 1.6% / 75th pct
CISA deadline: 2026-10-03 (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. - CVE-2026-104286 – Fortinet FortiMail | CVSS 9.8 | EPSS 2.2% / 82th pct
CISA deadline: 2026-10-04 (0d remaining) — 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.
New Today
- CVE-2026-88779 – Citrix NetScaler | CVSS 8.7 (HIGH) | AV: Network | EPSS 0.3% / 18th pct | Ransomware Use: No
Still Outstanding
- CVE-2026-104286 – Fortinet FortiMail | CVSS 9.8 (CRITICAL) | AV: Network | EPSS 2.2% / 82th 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-2026-102490 – Zammad GmbH Zammad | CVSS 9.4 (CRITICAL) | AV: Network | EPSS 0.6% / 48th pct | Ransomware Use: No
- CVE-2026-102489 – Zammad GmbH Zammad | CVSS 9.4 (CRITICAL) | AV: Network | EPSS 1.4% / 72th 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.
- CISA ICS AdvisoryAdvisory · 3 days ago – CISA Malcolm
View CSAF Summary The following versions of CISA Malcolm are affected: Malcolm CVSS Vendor Equipment Vulnerabilities v3 8.8 CISA CISA Malcolm Improper Neutralization of Input During Web Page Generation ('Cross-site Scrip… - CISA ICS AdvisoryAdvisory · 3 days ago – Meari IoT Cloud Platform OpenAPI Service
View CSAF Summary Successful exploitation of these vulnerabilities could allow attackers to manipulate device configurations, trigger unauthorized behaviors, and access sensitive information such as device credentials, o… - CISA ICS AdvisoryAdvisory · 3 days ago – Johnson Controls EasyIO Neo Series EC and CW Controllers
View CSAF Summary Successful exploitation of this vulnerability could allow an attacker tointercept and read sensitive information, including credentials andsession data. The following versions of Johnson Controls EasyIO… - SANS ISCResearch · 3 days ago – ScreenConnect Client (Ab)used by Attackers, (Thu, Oct 1st)
Threat Actors do not always use top-notch techniques or very complex malware to perform their attacks. Sometimes, they just abuse of existing applications…
 - SANS ISCResearch · 6 days ago – Apple Emergency Patch for iOS 26, macOS26, macOS15 (CVE-2026-86950), (Mon, Sep 28th)
Apple today released patches for all of its operating systems. However, only patches for older branches include a security fix. The vulnerability being addressed in iOS 26, macOS 26 and macOS 15 is already being exploite… - Unit 42Research · 4 days ago – Threat Brief: NetScaler Zero Days CVE-2026-88771 and CVE-2026-88772 Exploited in the Wild (Updated September 30)
Unit 42 is aware of possible 0-day activity against NetScaler devices. Citrix reports CVE-2026-88771, CVE-2026-88772 have been exploited in the wild. The post Threat Brief: NetScaler Zero Days CVE-2026-88771 and CVE-2026… - Unit 42Research · 9 days ago – 3 Consulting Myths Debunked by Unit 42 Experts
Unit 42 security experts address critical cybersecurity misconceptions, offering practical insights to help your organization reinforce its enterprise defenses. The post 3 Consulting Myths Debunked by Unit 42 Experts app… - Sophos X-OpsResearch · 4 days ago – TerminalFix and Lorem Ipsum Loader enable covert tunneling
The activity is linked to a broader campaign that previously used a different delivery mechanism Categories: Threat Research Tags: TerminalFix, clickfix, Lorem Ipsum Loader - Sophos X-OpsResearch · 6 days ago – Citrix NetScaler vulnerabilities (CVE-2026-88771, CVE-2026-88772) in active exploitation
Categories: Threat Research Tags: advisory, vulnerability, Citrix - The RecordIncident · 2 days ago – Mississippi mayor says ransomware incident led city to shut down systems
Government services were temporarily disrupted by ransomware in Vicksburg, Mississippi. Mayor Willis Thompson said the FBI and other authorities are investigating. - The RecordIncident · 2 days ago – 'Warlock' ransomware used in attacks on critical infrastructure in Portuguese, Spanish-speaking countries
The group is exploiting a variety of vulnerabilities impacting Microsoft SharePoint, according to a new report from Symantec Threat Hunter Team. - Security Affairs (APT)Incident · today – Warlock Ransomware Still Exploits Year-Old SharePoint Flaws to Hit Critical Infrastructure
Warlock ransomware continues to exploit unpatched SharePoint flaws to breach water utilities, telecoms, governments, and universities worldwide. Warlock ransomware made headlines back in mid-2025 for exploiting a chain o… - Security Affairs (APT)Incident · yesterday – Antino Backdoor Lets China-Linked UAT-11587 Turn Microsoft 365 Into a C2 Channel
Cisco Talos details UAT-11587, a China-linked group using the Antino backdoor and Microsoft 365 as cover to spy on Asian governments. Cisco Talos has been tracking a cluster of espionage activity since September 2025 tha… - Security Affairs (Cybercrime)News · yesterday – Fake Zoom installer hides macOS backdoor CloudSyncD
Jamf Threat Labs details CloudSyncD, a fake macOS Zoom installer that hides a phished password using invisible zero-width Unicode characters. Jamf Threat Labs found CloudSyncD while doing routine scanning on VirusTotal, … - Security Affairs (Cybercrime)Incident · 3 days ago – Operation KillSwitch: Police Dismantle KillSec Ransomware Group
Operation KillSwitch: Europol says the KillSec ransomware group, allegedly led by a 16-year-old, was dismantled after attacks on about 1,000 victims. Law enforcement seized control of KillSec ‘s dark web leak site,…
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.
16 new victims posted today
7-day total: 228 via Ransomware.live
Most Active Groups
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.
- 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.
- 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.
- 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
Top Countries
US (82), DE (11), GB (11), BR (8), CA (6)
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 → - 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 →
- Forma Therapeutics Holdings, Inc. (Healthcare · US) — claimed by Nightspire. – Clinical Trial & Statistical Data- Electronic Lab Notebooks & Research IP- Drug Discovery & Pipeline Data- Biological Research & Genomic Data 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.
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