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Cisco ASA and FTD Denial-of-Service Vulnerability

Cisco Adaptive Security Appliance ASA and Firepower Threat Defense FTD contain a missing release of resource after effective lifetime vulnerability that co

Security · HIGH
Source: CISA Known Exploited VulnerabilitiesMay 2, 2026, 4:51 PMSecurityhigh

Full content

Cisco Adaptive Security Appliance (ASA) and Firepower Threat Defense (FTD) contain a missing release of resource after effective lifetime vulnerability that could allow an unauthenticated, remote attacker to cause a denial-of-service (DoS) of the RAVPN service.

Vendor: Cisco

Product: Adaptive Security Appliance (ASA) and Firepower Threat Defense (FTD)

Due date: 2024-11-14

Known ransomware use: Unknown

Why it matters

Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

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