The Computer Incident Response Center Luxembourg (CIRCL) is a government-driven initiative designed to gather, review, report and respond to computer security threats and incidents.
OUR SERVICES
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MISP Threat Intelligence Sharing Platform and Private Sharing Communities
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Dynamic Malware Analysis (DMA)
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Clean documents from untrusted USB keys / sticks
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Database storing historical DNS records

Recent highlights

TR-98 - Security Advisory Ivanti Endpoint Manager Mobile (EPMM) (CVE-2026-1281 & CVE-2026-1340) - Active Exploitation - 9th February 2026

TR-97 - Supply Chain Compromise Propagating Through the npm Ecosystem (Shai-Hulud) - 28th October 2025

TR-96 - Multiple Vulnerabilities in F5 Devices and Products - Impact and Mitigation - 16th October 2025

TR-95 - Critical vulnerability - Deserialization of untrusted data in on-premises Microsoft SharePoint Server allows an unauthorized attacker to execute code over a network. CVE-2025-53770 - CVE-2025-53771 - 20th July 2025

CIRCL - Virtual Summer School (VSS) 2025 - 1st July 2025

Coordinated Vulnerability Disclosure (CVD) Policy - 18th June 2025

TR-93 - Financial transaction fraud after sytem compromise via Remote Management and Monitoring tools - 26th February 2025

TR-92 - Unused Domain Names and the Risks of Missing DNS SPF Records - 22nd January 2025

TR-88 - Motivation, procedure and rational for leaked credential notifications - 29th August 2024

Learning from the Recent Windows/Falcon Sensor Outage - Causes and Potential Improvement Strategies in Linux with Open Source - 23rd July 2024

TR-87 - CrowdStrike Agent causing BSOD loop on Windows - Faulty Update on Falcon Sensor - 19th July 2024

TR-86 - Check Point VPN Information Disclosure (CVE-2024-24919) - Actively Exploited - 31st May 2024

TR-85 - Three vulnerabilities in Cisco ASA software/applicance and FTD software being exploited - 25th April 2024

TR-84 - PAN-OS (Palo Alto Networks) OS Command Injection Vulnerability in GlobalProtect Gateway - CVE-2024-3400 - 12th April 2024

TR-82 - backdoor discovered in xz-utils - CVE-2024-3094 - 30th March 2024

Cybersecurity Unites Across Borders - FETTA Project Launched to Strengthen EU Cyber Threat Intelligence - 31st January 2024

TR-78 - CVE-2023-46805 (Authentication Bypass) & CVE-2024-21887 (Command Injection) for Ivanti Connect Secure and Ivanti Policy Secure Gateways - 11th January 2024

TR-77 - Spear phishing and voice call scams targeting corporate executives and their accounting department - 30th August 2023

TR-76 - Multiple high severity vulnerabilities in CODESYS V3 SDK could lead to RCE or DoS - 14th August 2023

TR-75 - Unauthenticated remote code execution vulnerability in NetScaler ADC (formerly Citrix ADC) and NetScaler Gateway (formerly Citrix Gateway) - CVE-2023-3519 - 21st July 2023

TR-74 - A heap-based buffer overflow vulnerability [CWE-122] in FortiOS - CVE-2023-27997 - 5th July 2023

TR-73 - Ransomware FAQ - 7th March 2023

TR-72 - Vulnerable Microsoft Exchange server metrics leading to alarming situation - 21st February 2023

TR-70 - Vulnerabilities in Microsoft Exchange CVE-2022-41040 - CVE-2022-41082 - 30th September 2022

New online service - Pandora Document and File Analysis - 7th March 2022

TR-68 - Best practices in times of tense geopolitical situations - 1st March 2022

TR-65 - Vulnerabilities and Exploitation of Log4j (Remote code injection in Log4j)

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