Report Date: 2026-10-06
New KEVs: 5 ▼ -2 vs last weekRansomware Victims: 232 ▲ +46 vs last week
5 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 232 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-2026-76504 – Cisco Catalyst SD-WAN Manager | CVSS 9.8 | EPSS 1.6% / 75th pct
CISA deadline: 2026-10-03 (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. - CVE-2026-104286 – Fortinet FortiMail | CVSS 9.8 | EPSS 2.2% / 82th pct
CISA deadline: 2026-10-04 (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-2026-102490 – Zammad GmbH Zammad | CVSS 9.4 | EPSS 0.6% / 48th pct
CISA deadline: 2026-10-05 (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 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-2026-88779 – Citrix NetScaler | CVSS 8.7 (HIGH) | AV: Network | EPSS 0.5% / 43th 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 · 5 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 · 5 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 · 5 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 · 5 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…
 - Unit 42Research · 6 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 · 11 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 · yesterday – Citrix NetScaler vulnerability (CVE-2026-88779) in active exploitation
Categories: Threat Research Tags: advisory, vulnerability, Citrix - Sophos X-OpsResearch · 6 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 - The RecordIncident · yesterday – Alleged ShinyHunters member reportedly detained in Jordan, assisting law enforcement
Saif âal-Din Khader is cooperating with the FBI, reports said, as the bureau responds to a massive breach that exposed employee data. - The RecordAdvisory · yesterday – US, Australia warn of latest Citrix vulnerability after NetScaler advisory
Citrix confirmed late on Friday that it was âtracking a newly observed issueâ related to some customer-managed NetScaler deployments but claimed the problem was not connected to vulnerabilities reported last week tha… - Security Affairs (APT)Incident · 2 days ago – 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 · 3 days ago – 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)Incident · yesterday – Denmark ’s Population Registry Breached, 8.8 Million Affected
Hackers accessed names, addresses and CPR numbers of 8.8 million people in Denmark through a third-party company with legal registry access. A hacker broke into the database that holds basically every identifying detail … - Security Affairs (Cybercrime)News · yesterday – Iranian hacker accused of draining 31TB from university inboxes extradited to the US
Iranian hacker Amir Barati faces extradition to the US over an alleged Iranian campaign that stole 31TB of data from universities. Amir Barati spent June 25 getting arrested in Montenegro, and this week a Montenegrin cou… - Bleeping ComputerNews · yesterday – Rejetto HFS servers now actively scanned for critical RCE flaw
Hackers are actively scanning for a Rejetto HFS weak signing key vulnerability, tracked as CVE-2026-61500, that allows session forgery, account takeover, and remote code execution (RCE). […]
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.
49 new victims posted today
7-day total: 232 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.
- Lamashtu — Lamashtu is an extortion group that first appeared in April 2026, claiming attacks against organizations in France, Romania, and Thailand across energy, pharmaceutical, and film sectors; it has not yet been confirmed as operating actual file-encrypting ransomware rather than pure data-theft extortion.
- 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.
Most Targeted Sectors
Top Countries
US (92), DE (13), GB (9), BR (7), IT (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 → - 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.
Stay Ahead
Found this useful? Get the daily report in your reader.
Free. No account. No email. Follow in Feedly, Inoreader, or any RSS reader.