Report Date: 2026-06-04
New KEVs: 5 — unchanged vs last weekRansomware Victims: 132 ▼ -46 vs last week
5 vulnerabilities were added to the CISA Known Exploited Vulnerabilities catalog this period. Linux products show the strongest concentration of risk signals this week. Ransomware activity is moderate with 132 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-2026-0257 – Palo Alto Networks PAN-OS | CVSS 7.8 | EPSS 46.5% / 98th pct
CISA deadline: 2026-06-01 (overdue by 3d) — Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable. - CVE-2024-21182 – Oracle WebLogic Server | CVSS 7.5 | EPSS 89.6% / 100th pct
CISA deadline: 2026-06-04 (0d remaining) — Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable. - CVE-2025-48595 – Android Framework | CVSS 8.4 | EPSS 0.4% / 61th pct
CISA deadline: 2026-06-05 (1d remaining) — Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
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-2026-45247 – Mirasvit Mirasvit Full Page Cache Warmer | CVSS 9.3 (CRITICAL) | AV: Network | EPSS 6.1% / 91th pct | Ransomware Use: No
- CVE-2025-48595 – Android Framework | CVSS 8.4 (HIGH) | AV: Local | EPSS 0.4% / 61th pct | Ransomware Use: No
- CVE-2022-0492 – Linux Kernel | CVSS 7.8 (HIGH) | AV: Local | EPSS 29.0% / 97th pct | Ransomware Use: No | PoC Available
- CVE-2026-0257 – Palo Alto Networks PAN-OS | CVSS 7.8 (HIGH) | AV: Network | EPSS 46.5% / 98th pct | Ransomware Use: No
- CVE-2024-21182 – Oracle WebLogic Server | CVSS 7.5 (HIGH) | AV: Network | EPSS 89.6% / 100th 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 – Hitachi Energy MACH HiDraw
View CSAF Summary Hitachi Energy is aware of a buffer overflow vulnerability that affects MACH HiDraw product versions listed in this document. Successful exploitation of this vulnerability could lead to a buffer overflo… - CISA ICS AdvisoryAdvisory · today – Hitachi Energy RTU500
View CSAF Summary Hitachi Energy is aware of vulnerabilities that affect RTU500 product versions listed in this document. If exploited, these vulnerabilities primarily impact product availability, with potential secondar… - CISA ICS AdvisoryAdvisory · today – NAVTOR NavBox
View CSAF Summary Successful exploitation of this vulnerability could allow a local attacker to gain unauthorized access to SOAP methods, resulting in a disruption of operations. The following versions of NAVTOR NavBox a… - Unit 42Incident · 2 days ago – The npm Threat Landscape: Attack Surface and Mitigations (Updated June 2)
Unit 42 analyzes npm supply chain evolution post-Shai Hulud. Discover wormable malware, CI/CD persistence, multi-stage attacks and more. The post The npm Threat Landscape: Attack Surface and Mitigations (Updated June 2) … - Unit 42Research · 2 days ago – Operation FlutterBridge: macOS Malvertising Campaign Spreads New FlutterShell Backdoor
Operation FlutterBridge is a malvertising campaign targeting macOS users. It distributed the new backdoor FlutterShell, built using the Flutter framework. The post Operation FlutterBridge: macOS Malvertising Campaign Spr… - Sophos X-OpsResearch · today – You do surprise me.exe: An unexpected executable in Hola Browser
<p>Following a certification test, Sophos X-Ops found an unexpected guest had hitched a ride</p> Categories: Threat Research Tags: Crypto mining, Supply chain - Sophos X-OpsResearch · 2 days ago – Pointing a Cursor at evading detection
AI accelerated tool development and testing, but humans drove the workflow Categories: Threat Research Tags: AI, EDR - The RecordAdvisory · today – Trump considers Palantir exec to lead CISA
Shyam Sankar, the chief technology officer at Palantir Technologies, has emerged as a lead contender for the long vacant Cybersecurity and Infrastructure Security Agency (CISA) director role, according to the sources, wh… - The RecordIncident · today – Russia seeks to label two anti-Kremlin hacker groups as âextremistâ
The groups have previously claimed responsibility for cyberattacks targeting critical infrastructure and government institutions in Russia and Belarus. - Security Affairs (APT)News · 6 days ago – Meet GREYVIBE, the Russia-Linked Hacking Group Using AI to Target Ukraine and Still Making Rookie Mistakes
GREYVIBE, a Russia-linked group active since 2025, targets Ukraine with AI-assisted malware and five attack chains. Researchers say it’s part spy op, part crime gang. Security firm WithSecure has been tracking a pr… - Security Affairs (APT)Incident · 9 days ago – Nimbus Manticore Expanded Attacks With AI-Assisted Malware and Fake Zoom Installers
Nimbus Manticore accelerated cyberattacks during wartime, using AI-assisted malware, fake Zoom installers, and SEO poisoning. When the United States launched Operation Epic Fury against Iran at the end of February 2026, … - Security Affairs (Cybercrime)News · 2 days ago – GoDaddy found malware on 1,980 WordPress sites using Steam as C2 infrastructure
Malware on approximately 2,000 WordPress sites hid C2 instructions in Steam profile comments using invisible Unicode. GoDaddy researchers spotted a command-and-control infrastructure for a malware campaign abusing Valve&… - Security Affairs (Cybercrime)News · 3 days ago – Ransomware Operators Keep Business Hours. The Data Proves It
16,699 ransomware leak posts over 2 years show 84% drop Monday–Friday, peak at European afternoon hours. October spikes yearly. Someone analyzed 16,699 ransomware leak-site posts across 200 groups over two years and aske… - Bleeping ComputerIncident · today – Hola Browser for Windows compromised to deliver cryptominer
The Windows version of the Hola Browser has been compromised in a supply chain attack that delivered an undeclared executable identified by researchers as a cryptocurrency miner. […] - The Hacker NewsNews · today – Cisco Patches CVE-2026-20230 in Unified CM as Exploit Code Goes Public
Cisco has patched a bug in Unified Communications Manager that lets an unauthenticated attacker on the network write files to the box and, from there, climb to root. It is tracked as CVE-2026-20230, and proof-of-concept …
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.
34 new victims posted today
7-day total: 132 via Ransomware.live
Infostealer Exposure: 2,440 employee credentials and 42,173 user credentials compromised via infostealer malware across victim organisations — indicating credential theft likely preceded these ransomware deployments.
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.
- 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.
- Genesis — Genesis is an emerging ransomware group first observed in late 2025, targeting small to mid-sized US organizations across healthcare, retail, financial services, legal, and manufacturing using double-extortion tactics, focusing heavily on data exfiltration and public leaking.
- Akira — The Akira ransomware group is said to have emerged in March 2023, and there's much speculation about its ties to the former CONTI ransomware group.<br> <br> It's worth noting that with the end of CONTI's operation, several affiliates migrated to independent campaigns such as Royal, BlackBasta, and others.<br> <br> According to some reports, Akira affiliates also work with other ransomware operations, such as Snatch and BlackByte, as an open directory of tools used by an Akira operator was identified, which also had connections to the Snatch ransomware.<br> <br> The first version of the Akira ransomware was written in C++ and appended files with the '.akira' extension, creating a ransom note named 'akira_readme.txt,' partially based on the Conti V2 source code. However, on June 29, 2023, a decryptor for this version was reportedly released by Avast.<br> <br> Subsequently, a version was released that fixed the decryption flaw on July 2, 2023. Since then, the new version is said to be written in Rust, this time called 'megazord.exe,' and it changes the extension to '.powerranges' for encrypted files.<br> <br> Most of Akira's initial access vectors use brute-force attempts on Cisco VPN devices (which use single-factor authentication only).<br> Additionally, exploitation of CVEs: CVE-2019-6693 and CVE-2022-40684 for initial access has been identified.<BR>Source: https://github.com/crocodyli/ThreatActors-TTPs
- Dragonforce — DragonForce is a major ransomware-as-a-service operation first observed in August 2023 that launched a formal affiliate program offering 80% revenue share, then rebranded as a "ransomware cartel" in 2025, gaining notoriety for high-profile attacks on UK retailers Marks & Spencer, Co-op, and Harrods.
Most Targeted Sectors
Top Countries
US (46), DE (9), IN (5), FR (4), BR (4)
Notable Incidents
- www.elumax.com (Business Services · DE) — claimed by Krybit. Lumax is dedicated to maintaining high standards of ethics, corporate governance and effective accountability mechanisms… 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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