Report Date: 2026-09-03
New KEVs: 7 — unchanged vs last weekRansomware Victims: 233 ▼ -19 vs last week
7 vulnerabilities were added to the CISA Known Exploited Vulnerabilities catalog this period. Papercut products show the strongest concentration of risk signals this week. Ransomware activity is moderate with 233 new victims posted to leak sites over the last 7 days, with Qilin 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-2026-49869 – Kestra Kestra OSS | CVSS 10.0 | EPSS 1.9% / 78th pct | PoC Available
CISA deadline: 2026-09-05 (2d 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. - CVE-2026-83548 – SonicWall SMA1000 Appliances | CVSS 10.0 | EPSS 0.7% / 51th pct
CISA deadline: 2026-09-05 (2d 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. - CVE-2026-82329 – JFrog Artifactory | CVSS 9.8 | EPSS 7.7% / 94th pct
CISA deadline: 2026-09-05 (2d 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.
This Reporting Window
- CVE-2026-49869 – Kestra Kestra OSS | CVSS 10.0 (CRITICAL) | AV: Network | EPSS 1.9% / 78th pct | Ransomware Use: No | PoC Available
- CVE-2026-83548 – SonicWall SMA1000 Appliances | CVSS 10.0 (CRITICAL) | AV: Network | EPSS 0.7% / 51th pct | Ransomware Use: No
- CVE-2026-82329 – JFrog Artifactory | CVSS 9.8 (CRITICAL) | AV: Network | EPSS 7.7% / 94th pct | Ransomware Use: No
- CVE-2026-82078 – PaperCut NG/MF | CVSS 9.4 (CRITICAL) | AV: Network | EPSS 0.9% / 58th pct | Ransomware Use: No
- CVE-2026-9586 – Sangoma Switchvox | CVSS 9.3 (CRITICAL) | AV: Network | EPSS 11.8% / 96th pct | Ransomware Use: No | PoC Available
- CVE-2026-59822 – BerriAI LiteLLM | CVSS 8.8 (HIGH) | AV: Network | EPSS 0.9% / 56th pct | Ransomware Use: No
- CVE-2026-81578 – PaperCut NG/MF | CVSS 8.8 (HIGH) | AV: Network | EPSS 0.8% / 53th 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 · today – Tycon Systems TPDIN-Monitor-WEB3
View CSAF Summary Successful exploitation of these vulnerabilities could allow for an attacker to perform a man-in-the-middle (MitM) attack, cause a factory reset, wipe credentials, or retrieve sensitive information. The… - CISA ICS AdvisoryAdvisory · today – Pyramid Solutions NetStaX EtherNet/IP Stack
View CSAF Summary Successful exploitation of this vulnerability could result in memory corruption, a device crash, or a potential remote attack vector without the originating device receiving a CIP error indicating that … - CISA ICS AdvisoryAdvisory · today – Inductive Automation Ignition
View CSAF Summary Successful exploitation of this vulnerability could allow any authenticated user to create projects. The following versions of Inductive Automation Ignition are affected: Ignition <=8.1.53 (CVE-2026-… - SANS ISCResearch · 2 days ago – Guildma (Astaroth) malware infection from Brazilian Portuguese email, (Tue, Sep 1st)
Introduction
 - SANS ISCResearch · 6 days ago – Some Malicious PE Stats, (Thu, Aug 27th)
During my last FOR610 session, a student asked me if I had some statistics in mind about the compilers used to generate malicious PE files? A couple of months ago, I shared some stats about the trend in 64bits VS. 3… - Unit 42Incident · today – Attackers Expose Ongoing AI Tool Use Targeting Organizations in Latin America
Explore how attackers targeting Latin American entities use AI for data exfiltration and how basic OpSec errors allow defenders to disrupt operations. The post Attackers Expose Ongoing AI Tool Use Targeting Organizations… - Unit 42Incident · yesterday – An AI-Assisted Cyber Attack: Inside a Unit 42 Investigation
Using autonomous AI agents, an attacker breached an enterprise network in a matter of hours. Understand how to address and defend against agentic attacks. The post An AI-Assisted Cyber Attack: Inside a Unit 42 Investigat… - Sophos X-OpsResearch · yesterday – SonicWall 83548 83549
Categories: Threat Research Tags: advisory, vulnerability, SonicWall - Sophos X-OpsResearch · 2 days ago – Ungentlemanly behavior: Insights into a ransomware operation
Analysis of 15 intrusions revealed tradecraft used by GOLD SHERWOOD affiliates Categories: Threat Research Tags: ransomware as a service, The Gentlemen, GOLD SHERWOOD, Ransomware - The RecordIncident · today – US and Canadian court data exposed in Thomson Reuters breach
Sealed court information and sensitive personal data were exposed in a breach of a Thomson Reuters records platform affecting courts in at least 12 U.S. states, the U.S. Virgin Islands and Canada. - The RecordNews · yesterday – Russian national facing 20 years for malware campaign that infected 80,000 freelancers
Searzhudin Tamirlanovich Aktulaev appeared in a San Francisco federal court on Monday after being arrested in Cyprus in May 2025 and extradited to the U.S. last week. - Security Affairs (APT)News · yesterday – Iran-linked APT Mirage Kitten Uses Fake Job Tests to Spread Malware
Mirage Kitten used fake LinkedIn coding tests to spread NodeRabbit and PollCat, even banning AI tools that could have spotted the malware. Iran-linked Mirage Kitten hackers just found a genuinely clever way to make their… - Security Affairs (APT)Incident · 3 days ago – China-linked Fire Ant Hides Inside Trusted Infrastructure
Fire Ant hijacked Cisco routers, stole credentials and altered logs to hide its tracks, using trusted infrastructure to reach high-value networks. Chinese-linked cyber espionage group Fire Ant has spent the past year qui… - Security Affairs (Cybercrime)Incident · 2 days ago – Attackers Access Aesto Health AWS Infrastructure, Exposing 9.5 Million Records
Aesto Health suffered a breach exposing personal and health data of more than 9.5 million people after attackers accessed its AWS infrastructure. Aesto Health, a U.S. healthcare technology company, disclosed a data breac… - Security Affairs (Cybercrime)News · 3 days ago – ValleyRAT: When Legitimate Software Becomes a Malware Delivery Tool
ValleyRAT hides behind legitimate adware, using DLL sideloading to evade detection, steal data and give Silver Fox control of infected systems. ValleyRAT doesn’t always need to disguise itself as a cracked game or …
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.
24 new victims posted today
7-day total: 233 via Ransomware.live
Infostealer Exposure: 308 employee credentials and 55,396 user credentials compromised via infostealer malware across victim organisations — indicating credential theft likely preceded these ransomware deployments.
Most Active Groups
Group Intelligence
- 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.
- 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.
- Krybit — Krybit is an emerging RaaS group that launched in late March 2026, offering affiliates an 80/20 revenue split with support for Windows, Linux, ESXi, and NAS device encryption, and became notable for a public feud with rival group 0APT in which each breached and leaked the other's operator 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 (72), DE (15), GB (11), IN (8), MX (8)
Notable Incidents
- Uak University (Education · TR) — claimed by Qilin. N/A Press coverage →
- Manchester Airports Group (Transportation · GB) — claimed by Fulcrumsec. [AI generated] Manchester Airports Group (MAG) is a UK-based airport operator and one of the largest in the United Kingdom. It owns and operates Manchester Airport, London Stansted Airport, and East Midlands Airport. Ope… Press coverage →
- REXT Holdings Co., Ltd. (Other · JP) — claimed by Ransomhouse. Private retail and holding company based in Tokyo, Japan. Press coverage →
- Nutex Health (Healthcare · US) — claimed by Thegentlemen. nutexhealth.com zoominfo.com/c/nutex-health-inc/372032478 (NUTX, Nasdaq) — US healthcare company, based in Houston, Texas, founded in 2011 by Dr. Thomas Vo.
It runs 27 small "micro-hospitals" in 12 states — small hospita… Press coverage → - Newton County School System (Education · US) — claimed by Qilin. N/A 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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