Threat Intelligence Report — May 29, 2026 | 5 New KEVs · 182 Victims

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Report Date: 2026-05-29

New KEVs: 5Ransomware Victims: 182

5 vulnerabilities were added to the CISA Known Exploited Vulnerabilities catalog this period, of which 2 are linked to active ransomware campaigns. Litespeed products show the strongest concentration of risk signals this week. Ransomware activity is moderate with 182 new victims posted to leak sites over the last 7 days, with Dragonforce 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.

  1. CVE-2026-48172 – LiteSpeed cPanel Plugin | CVSS 10.0 | EPSS 8.0% / 92th pct
    CISA deadline: 2026-05-29 (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.
  2. CVE-2026-8398 – Daemon Daemon Tools Lite | CVSS 9.3 | EPSS 14.4% / 94th pct | PoC Available
    CISA deadline: 2026-05-30 (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.
  3. CVE-2026-0257 – Palo Alto Networks PAN-OS | CVSS 7.8 | EPSS 0.1% / 20th pct
    CISA deadline: 2026-06-01 (3d 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.

New Today

  • CVE-2026-0257 – Palo Alto Networks PAN-OS | CVSS 7.8 (HIGH) | AV: Network | EPSS 0.1% / 20th pct | Ransomware Use: No

Still Outstanding

  • CVE-2026-45321 – TanStack TanStack | CVSS 9.6 (CRITICAL) | AV: Network | EPSS 15.1% / 95th pct | Ransomware Use: Yes | PoC Available
  • CVE-2026-48027 – Nx Nx Console | CVSS 9.3 (CRITICAL) | AV: Network | EPSS 26.8% / 96th pct | Ransomware Use: Yes | PoC Available
  • CVE-2026-48172 – LiteSpeed cPanel Plugin | CVSS 10.0 (CRITICAL) | AV: Network | EPSS 8.0% / 92th pct | Ransomware Use: No
  • CVE-2026-8398 – Daemon Daemon Tools Lite | CVSS 9.3 (CRITICAL) | AV: Network | EPSS 14.4% / 94th pct | Ransomware Use: No | PoC Available

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.

19 new victims posted today
7-day total: 182 via Ransomware.live

Infostealer Exposure: 831 employee credentials and 46,150 user credentials compromised via infostealer malware across victim organisations — indicating credential theft likely preceded these ransomware deployments.

Most Active Groups

Dragonforce 40 Qilin 26 Thegentlemen 15 Akira 10 Nightspire 10

Group Intelligence

  • 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.
  • 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.
  • 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
  • Nightspire — NightSpire is a ransomware group that first emerged in March 2025 and rapidly claimed over 250 victims across retail, manufacturing, healthcare, finance, and education sectors in the US, France, India, Taiwan, and Japan, using aggressive double-extortion with ransom deadlines as short as two days.

Most Targeted Sectors

Business Services 36 Manufacturing 23 Healthcare 18 Consumer Services 16 Technology 12

Top Countries

US (65), DE (10), GB (10), ES (7), NL (6)

Notable Incidents

  • University of Valencia (Education · ES) — claimed by Nova. University of Valencia is a university located in the Spanish city of Valencia. It is one of the oldest surviving universities in Spain, and the oldest in the Valencian Community, and is regarded as one of Spain's leadin… Press coverage →
  • WG Neukölln (Not Found · DE) — claimed by Dragonforce. WG Neukölln eG is a cooperative based in Berlin that offers various housing options and services, including apartments and residential projects. The organization is committed to social engagement and provides a venue for… Press coverage →
  • saver.nl (Consumer Services · NL) — claimed by Dragonforce. Saver NV operates in waste management, environmental services, and recycling. It employs 20 to 49 people and generates revenues of $5 to $10 million. The company is headquartered in Roosendaal, Noord-Brabant, the Netherl… Press coverage →
  • Charter Communications, Inc. (Telecommunication · US) — claimed by Shinyhunters. Over 42M records containing PII have been compromised. This is a final warning to reach out by 27 May 2026 before we leak along with several annoying (digital) problems that'll come your way. Make the right decision, don… Press coverage →
  • Alamo Heights School District (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.

Litespeed 1 Daemon 1 Nx 1 Tanstack 1 Palo Alto Networks 1 KEVs CVEs Mentions

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