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CISA Warns of Actively Exploited F5 BIG-IP Vulnerability in Ongoing Attacks

ID: ecd5dbd9-42fe-5293-9318-6d5c9eb75ddc

STIX ID: report--ecd5dbd9-42fe-5293-9318-6d5c9eb75ddc

Feed Name: GBHackers

Threat Score
90/100

Date Published: 2026-03-30

Date Updated: 2026-04-22

Author: Divya

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CISA has issued an urgent advisory for an actively exploited unauthenticated RCE in F5 BIG-IP AMP (CVE-2025-53521), added to the Known Exploited Vulnerabilities catalog; federal agencies must patch or mitigate by March 30, 2026 under BOD 22-01 and all organizations are strongly urged to immediately apply vendor fixes or disconnect affected appliances to prevent full system compromise and network pivoting.

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