Recorded Future Reported 59 High-Impact Vulnerabilities in June, 56 Actively Exploited

Summary
Recorded Future identified 59 high-impact vulnerabilities in June 2026; 23 were in CISA’s KEV catalog, and 56 were reported as actively exploited. The report also highlights malware-linked campaigns, widespread RCE exposure, and public PoCs.
Key points
- Insikt Group identified 59 high-impact vulnerabilities across 36 vendors; 30 received a Very Critical Recorded Future Risk Score, a 47% increase from May.
- The report says 23 vulnerabilities were listed in CISA’s KEV catalog, 33 were reported by vendors, and three were primarily surfaced through honeypot data.
- Fifty-six vulnerabilities were reported as actively exploited in June; the table excludes three CVEs associated with honeypot activity.
- Twenty-five vulnerabilities enabled remote code execution, and public proof-of-concept exploits were identified for 53 of the 59 vulnerabilities.
- Campaign activity included exploitation linked to SharkLoader and Cobalt Strike, Lazarus Group’s COPPERHEDGE, APT36 operations, a C0XMO botnet, and Qilin ransomware.
- Four vulnerabilities in the prominent disclosures table were at least five years old, and the fastest observed disclosure-to-exploitation interval was under one day.
Article Details
- Publisher
- Recorded Future
- Report Period
- June 2026
- Scope
- High-impact vulnerabilities and related exploitation activity identified in June 2026, including actively exploited CVEs, malware-linked activity, and proof-of-concept exploits.
- Sample Size
- 59 high-impact vulnerabilities; the actively exploited vulnerability table lists 56, excluding three CVEs associated with honeypot activity.
- Key Statistics
- 30 of 59 vulnerabilities had a Very Critical Recorded Future Risk Score.
- 23 of 59 vulnerabilities were included in CISA's Known Exploited Vulnerabilities catalog; 33 were reported by vendors and three were primarily surfaced through honeypot data.
- The 59 vulnerabilities affected products from 36 vendors; Microsoft accounted for approximately 17%.
- 25 of 59 vulnerabilities enabled remote code execution, affecting products from 18 vendors.
- Public proof-of-concept exploits were identified for 53 of 59 vulnerabilities.
- Recommendations
- Prioritize vulnerabilities based on likelihood of exploitation as well as severity.
- Verify the validity and efficacy of public proof-of-concept exploits before testing them.
- Identify and prioritize internet-facing assets vulnerable to specific CVEs.
- Assess vulnerabilities in vendors' and suppliers' internet-facing systems.
CVE
CVE-2016-4437CVE-2016-4437CVE-2020-17103CVE-2020-17103CVE-2021-26855CVE-2021-26855CVE-2021-27076CVE-2021-27076CVE-2021-27137CVE-2021-27137CVE-2021-36260CVE-2021-36260CVE-2022-0492CVE-2022-0492CVE-2022-27925CVE-2022-27925CVE-2022-40684CVE-2022-40684CVE-2022-41082CVE-2022-41082CVE-2023-20198CVE-2023-20198CVE-2023-32315CVE-2023-32315CVE-2023-46747CVE-2023-46747CVE-2024-21182CVE-2024-21182CVE-2024-21762CVE-2024-21762CVE-2024-36401CVE-2024-36401CVE-2025-48595CVE-2025-48595CVE-2025-55182CVE-2025-55182CVE-2025-6218CVE-2025-6218CVE-2025-67038CVE-2025-67038CVE-2025-8088CVE-2025-8088CVE-2026-10520CVE-2026-10520CVE-2026-11645CVE-2026-11645CVE-2026-12569CVE-2026-12569CVE-2026-20230CVE-2026-20230CVE-2026-20245CVE-2026-20245CVE-2026-20253CVE-2026-20253CVE-2026-20262CVE-2026-20262CVE-2026-21509CVE-2026-21509CVE-2026-21513CVE-2026-21513CVE-2026-25089CVE-2026-25089CVE-2026-25939Insikt Group created Nuclei templates to detect two of the vulnerabilities featured in this month’s report: CVE-2026-35616 affecting Fortinet FortiClient EMS and CVE-2026-25939 affecting Frangoteam FUXA.CVE-2026-28318CVE-2026-28318CVE-2026-3300CVE-2026-3300CVE-2026-33825CVE-2026-33825CVE-2026-34908CVE-2026-34908CVE-2026-34909CVE-2026-34909CVE-2026-34910CVE-2026-34910CVE-2026-35273CVE-2026-35273CVE-2026-35616Insikt Group created Nuclei templates to detect two of the vulnerabilities featured in this month’s report: CVE-2026-35616 affecting Fortinet FortiClient EMS and CVE-2026-25939 affecting Frangoteam FUXA.CVE-2026-39808CVE-2026-39808CVE-2026-39813CVE-2026-39813CVE-2026-4020CVE-2026-4020CVE-2026-41089CVE-2026-41089CVE-2026-41091CVE-2026-41091CVE-2026-42271CVE-2026-42271CVE-2026-44963CVE-2026-44963CVE-2026-45247CVE-2026-45247CVE-2026-46817CVE-2026-46817CVE-2026-48558CVE-2026-48558CVE-2026-48907CVE-2026-48907CVE-2026-5027CVE-2026-5027CVE-2026-50751CVE-2026-50751CVE-2026-54420CVE-2026-54420CVE-2026-7473CVE-2026-7473CVE-2026-8206CVE-2026-8206
Threat Actors
APT36Reportedly exploited Microsoft vulnerabilities in operations targeting India; the activity was linked to backdoor deployment and SHEETCREEP.C0XMOIdentified as a botnet propagating through DD-WRT routers.LazarusReportedly exploited CVE-2025-55182 to deploy COPPERHEDGE against financial and blockchain-related organizations.Lazarus GroupThe report identifies Lazarus Group as exploiting CVE-2025-55182 to deploy COPPERHEDGE against financial and blockchain-related organizations.Qilin RansomwareReportedly associated with exploitation of a vulnerability affecting Check Point gateways.StrikeSharkNamed in the report as exploiting public-facing applications and vulnerabilities to deploy SharkLoader, which delivered Cobalt Strike.
Malware
Cobalt StrikeIn June 2026, StrikeShark exploited public-facing applications to deploy SharkLoader and deliver Cobalt Strike; Lazarus exploited CVE-2025-55182 to deploy COPPERHEDGE; APT36 exploited Microsoft vulnerabilities inCOPPERHEDGEto deploy SharkLoader and deliver Cobalt Strike; Lazarus exploited CVE-2025-55182 to deploy COPPERHEDGE; APT36 exploited Microsoft vulnerabilities in operations targeting India; a C0XMO botnet propagatedEKZMicrosoft vulnerabilities in operations targeting India; a C0XMO botnet propagated through DD-WRT routers; EKZ information-stealing malware was delivered through FortiClient EMS exploitation; and Qilin ransomware wasQilin Ransomwarerouters; EKZ information-stealing malware was delivered through FortiClient EMS exploitation; and Qilin ransomware was associated with a vulnerability affecting Check Point gateways.SharkLoaderIn June 2026, StrikeShark exploited public-facing applications to deploy SharkLoader and deliver Cobalt Strike; Lazarus exploited CVE-2025-55182 to deploy COPPERHEDGE; APT36 exploited Microsoft vulnerabilities inSHEETCREEPThis activity was linked to backdoor deployment and SHEETCREEP.
Vendors
ApacheApache ShiroAristaArista EOSBerriAIBerriAI LiteLLMCheck PointCheck Point Security Gateway, Quantum Security Gateway, and Spark FirewallsCiscoCisco Unified Communications ManagerF5F5 BIG-IPFortinetInsikt Group created Nuclei templates to detect two of the vulnerabilities featured in this month’s report: CVE-2026-35616 affecting Fortinet FortiClient EMS and CVE-2026-25939 affecting Frangoteam FUXA.FrangoteamInsikt Group created Nuclei templates to detect two of the vulnerabilities featured in this month’s report: CVE-2026-35616 affecting Fortinet FortiClient EMS and CVE-2026-25939 affecting Frangoteam FUXA.GeoServerGeoserverGoogleGoogle Chromium V8 and ChromeHikvisionHikvision FirmwareIvantiIvanti SentryLantronixLantronix EDS5000LiteSpeedLiteSpeed cPanel PluginMetaMeta React Server Components packagesMicrosoftThe 59 vulnerabilities in this report affected products from 36 vendors, with Microsoft accounting for approximately 17% of the vulnerabilities.MirasvitMirasvit Full Page Cache Warmer for Magento 2OracleOracle PeopleSoft Enterprise PeopleToolsPTCPTC Windchill, Windchill PDMLink, and FlexPLMSimpleHelpSimpleHelpSolarWindsSolarWinds Serv-USplunkSplunk EnterpriseUbiquitiUbiquiti UniFi OS, UniFi OS Server, UDM, and UDM-ProVeeamVeeam Backup and ReplicationWPEverestWPEverest Everest Forms ProZimbraZimbra
Products
Android FrameworkAndroid FrameworkApache ShiroApache ShiroBackup and ReplicationVeeam Backup and ReplicationBIG-IPF5 BIG-IPBusiness Productivity ServersMicrosoft SharePoint and Business Productivity ServersCatalyst SD-WAN ControllerCatalyst SD-WAN ManagerCisco Catalyst SD-WAN Manager and ControllerChromium V8Google Chromium V8 and ChromecPanel PluginLiteSpeed cPanel PluginDD-WRTDD-WRT FirmwareDefender Antimalware PlatformMicrosoft Defender Antimalware PlatformEDS5000Lantronix EDS5000EOSArista EOSEverest Forms ProWPEverest Everest Forms ProExchange ServerMicrosoft Exchange Server 2016 and 2019Express 7Ubiquiti UniFi OS, UniFi OS Server, Express 7, and UDMFlexPLMPTC Windchill, Windchill PDMLink, and FlexPLMFortiClient EMSInsikt Group created Nuclei templates to detect two of the vulnerabilities featured in this month’s report: CVE-2026-35616 affecting Fortinet FortiClient EMS and CVE-2026-25939 affecting Frangoteam FUXA.FortiOSFortinet FortiOS, FortiProxy, and FortiSwitchManagerFortiProxyFortinet FortiOS, FortiProxy, and FortiSwitchManagerFortiSandboxFortiSandbox PaaSFortiSandbox PaaSFortiSandbox PaaSFortiSwitchManagerFortinet FortiOS, FortiProxy, and FortiSwitchManagerFull Page Cache Warmer for Magento 2Mirasvit Full Page Cache Warmer for Magento 2FUXAInsikt Group created Nuclei templates to detect two of the vulnerabilities featured in this month’s report: CVE-2026-35616 affecting Fortinet FortiClient EMS and CVE-2026-25939 affecting Frangoteam FUXA.Google ChromeGoogle Chromium V8 and ChromeGravity SMTPGravity SMTPIOS XE SoftwareCisco IOS XE SoftwareJoomla Content Editor (JCE)Joomla Content Editor (JCE) extension for JoomlaKirki – Freeform Page Builder, Website Builder & CustomizerKirki – Freeform Page Builder, Website Builder & CustomizerLangflowLangflowLiteLLMBerriAI LiteLLMMalware Protection EngineMicrosoft Malware Protection EngineMicrosoft 365 Apps for EnterpriseMicrosoft 365 Apps for Enterprise and Office 2016Microsoft SharePointMicrosoft SharePoint and Business Productivity ServersMicrosoft WindowsMicrosoft Windows 10/11 and Windows Server 2019Office 2016Microsoft 365 Apps for Enterprise and Office 2016OpenfireOpenfireOracle PaymentsOracle PaymentsPeopleSoft Enterprise PeopleToolsOracle PeopleSoft Enterprise PeopleToolsQuantum Security GatewayCheck Point Security Gateway, Quantum Security Gateway, and Spark FirewallsReact Server ComponentsMeta React Server Components packagesSecurity GatewayCheck Point Security Gateway, Quantum Security Gateway, and Spark FirewallsSentryIvanti SentryServ-USolarWinds Serv-USpark FirewallsCheck Point Security Gateway, Quantum Security Gateway, and Spark FirewallsSplunk EnterpriseSplunk EnterpriseUDMUbiquiti UniFi OS, UniFi OS Server, UDM, and UDM-ProUDM-ProUbiquiti UniFi OS, UniFi OS Server, UDM, and UDM-ProUniFi OSUbiquiti UniFi OS, UniFi OS Server, UDM, and UDM-ProUniFi OS ServerUbiquiti UniFi OS, UniFi OS Server, UDM, and UDM-ProUnified Communications ManagerCisco Unified Communications ManagerWebLogic ServerOracle WebLogic ServerWindchillPTC Windchill, Windchill PDMLink, and FlexPLMWindchill PDMLinkPTC Windchill, Windchill PDMLink, and FlexPLMWindows ServerMicrosoft Windows 10/11 and Windows Server 2019WinRARWinRAR
Tools
Cobalt StrikeIn June 2026, StrikeShark exploited public-facing applications to deploy SharkLoader and deliver Cobalt Strike; Lazarus exploited CVE-2025-55182 to deploy COPPERHEDGE; APT36 exploited Microsoft vulnerabilities inNucleiInsikt Group created Nuclei templates to detect two of the vulnerabilities featured in this month’s report: CVE-2026-35616 affecting Fortinet FortiClient EMS and CVE-2026-25939 affecting Frangoteam FUXA.