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FIRESTARTER Backdoor Hit Federal Cisco Firepower Device, Survives Security Patches

The U.S. Cybersecurity and Infrastructure Security Agency (CISA) has revealed that an unnamed federal civilian agency's Cisco Firepower device running Adaptive Security Appliance (ASA) software was compromised in September 2025 with malware called FIRESTARTER.
FIRESTARTER, per CISA and the U.K.'s National Cyber Security Centre (NCSC), is assessed to be a backdoor designed for remote access and

6:10 pm, April 24, 2026

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https://thehackernews.com/2026/04/firestarter-backdoor-hit-federal-cisco.html

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https://thehackernews.com/2026/04/firestarter-backdoor-hit-federal-cisco.html

id: 795
uid: TWEL2
insdate: 2026-04-24 18:10:13
title: FIRESTARTER Backdoor Hit Federal Cisco Firepower Device, Survives Security Patches
additional: The U.S. Cybersecurity and Infrastructure Security Agency (CISA) has revealed that an unnamed federal civilian agency's Cisco Firepower device running Adaptive Security Appliance (ASA) software was compromised in September 2025 with malware called FIRESTARTER.
FIRESTARTER, per CISA and the U.K.'s National Cyber Security Centre (NCSC), is assessed to be a backdoor designed for remote access and
category: Cybersecurity
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guid: https://thehackernews.com/2026/04/firestarter-backdoor-hit-federal-cisco.html
source_url: https://thehackernews.com/2026/04/firestarter-backdoor-hit-federal-cisco.html
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