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CVE Record

CVE-2018-0240: Multiple vulnerabilities in the Application Layer Protocol Inspection feature of Cisco Adaptive Security Ap...

Multiple vulnerabilities in the Application Layer Protocol Inspection feature of Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to trigger a reload of an affected device, resulting in a denial of service (DoS) condition. The vulnerabilities are due to logical errors during traffic inspection. An attacker could exploit these vulnerabilities by sending a high volume of malicious traffic across an affected device. An exploit could allow the attacker to cause a deadlock condition, resulting in a reload of an affected device. These vulnerabilities affect Cisco ASA Software and Cisco FTD Software configured for Application Layer Protocol Inspection running on the following Cisco products: 3000 Series Industrial Security Appliance (ISA), ASA 5500 Series Adaptive Security Appliances, ASA 5500-X Series Next-Generation Firewalls, ASA Services Module for Cisco Catalyst 6500 Series Switches and Cisco 7600 Series Routers, Adaptive Security Virtual Appliance (ASAv), Firepower 2100 Series Security Appliance, Firepower 4100 Series Security Appliance, Firepower 9300 ASA Security Module, FTD Virtual (FTDv). Cisco Bug IDs: CSCve61540, CSCvh23085, CSCvh95456.

UnknownCVSS not scoredNot KEV-listedUpdated
Glexia's TakeAutomated analysis

Security readout for executives and security teams

This flaw can make affected Cisco ASA or Firepower firewalls reload, briefly taking security enforcement and network connectivity down. The risk is operational disruption, especially where these devices sit at internet, VPN, industrial, or data-center chokepoints. The source bundle does not provide a CVSS score. Exposure is likely where listed Cisco ASA or FTD products run affected software and have Application Layer Protocol Inspection configured. Devices at perimeter, VPN, industrial-security, or inter-segment inspection points carry higher business impact because a reload can interrupt traffic flow and security controls. Prioritize remediation for devices whose reload would disrupt business connectivity, VPN access, industrial segmentation, or perimeter protection. This is a denial-of-service issue, not a data-theft issue based on the bundle, but the operational blast radius can be significant. Mitigation focus: Identify ASA and FTD devices using Application Layer Protocol Inspection.; Review Cisco advisory cisco-sa-20180418-asa_inspect for affected and fixed releases.; Upgrade affected devices according to Cisco guidance and change-control requirements..

Prepared

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

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CWE-399: Exact CWE lookup

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cve · low confidence lookup

CVE-2018-0240 mapping review

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Vulnerability profileCVE Program record
Severity
Unknown
CVSS
Not scored
Known Exploited
No
Published
Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

0CVSS vectors
0Timeline events
0ADP providers
3Source links

CVSS and timeline data

No CVSS vectors or timeline events were available in the normalized CVE source material.

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
n/aCisco Adaptive Security ApplianceCisco Adaptive Security ApplianceListed
Weakness

CWE details

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CWE-399 · source CWE mapping

Resource Management Errors

Resource Management Errors represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.