CISA: US agency breached through Cisco vulnerability, FIRESTARTER backdoor allowed access through March

By The Record from Recorded Future News April 23, 2026 · Edited April 23, 2026

CISA said the unnamed department was infected with malware called “FIRESTARTER” that allowed the hackers to return to the Cisco device in March without re-exploiting the original vulnerabilities.

CISA: US agency breached through Cisco vulnerability, FIRESTARTER backdoor allowed access through March

CISA said the unnamed department was infected with malware called “FIRESTARTER” that allowed the hackers to return to the Cisco device in March without re-exploiting the original vulnerabilities.

Reference: https://therecord.media/cisa-us-agency-breached-cisco-vulnerability-backdoor

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