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Cisco Adaptive Security Appliance and Firepower Threat Defense Unauthorized Access Vulnerability

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

CISA catalog record

Cisco Adaptive Security Appliance and Firepower Threat Defense contain an unauthorized access vulnerability that could allow an unauthenticated, remote attacker to conduct a brute force attack in an attempt to identify valid username and password combinations or establish a clientless SSL VPN session with an unauthorized user.

Product
Adaptive Security Appliance and Firepower Threat Defense
Added to KEV
13 Sep 2023
Federal remediation due
4 Oct 2023
Known ransomware use
Yes

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 18:00 UTC · 254 of 255 readable · 253 fully read · documentation 0/409 current