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CVE-2024-20353CISA KEV

Cisco ASA and FTD Denial of Service Vulnerability

CISA lists this Cisco Adaptive Security Appliance (ASA) and Firepower Threat Defense (FTD) vulnerability as known exploited. The vendor's advisory has the fixed versions.

CISA KEVVendor advisoryNVD

CISA catalog record

Cisco Adaptive Security Appliance (ASA) and Firepower Threat Defense (FTD) contain an infinite loop vulnerability that can lead to remote denial of service condition.

Product
Adaptive Security Appliance (ASA) and Firepower Threat Defense (FTD)
Added to KEV
24 Apr 2024
Federal remediation due
1 May 2024
Known ransomware use
Not reported

What changed

First observed 14 Oct 2026

No field changes in the recorded history.

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ChangeIntel

An IT change radar: releases, security, known issues, retirements, documentation changes, and service status from public sources. Every item links to supporting evidence; dates and statuses can change after they are read.

Sources read 14 Oct 16:59 UTC · 254 of 255 readable · 253 fully read · documentation 0/409 current

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