CVE-2012-0378: n/a vulnerability

CVE-2012-0378: Cisco Adaptive Security Appliances (ASA) 5500 series devices with software 8.0 through 8.4 allow remote att...

Cisco Adaptive Security Appliances (ASA) 5500 series devices with software 8.0 through 8.4 allow remote attackers to cause a denial of service (connection limit exceeded) by triggering a large number of stale connections that result in an incorrect value for an MPF connection count, aka Bug ID CSCtv19854.

UnknownCVSS not scoredNot KEV-listedUpdatedSep 16, 2024, 17:24 UTC (UTC+00:00)

Security readout for executives and security teams

This is a denial-of-service issue in Cisco ASA 5500 firewalls running ASA software 8.0 through 8.4. A remote attacker could trigger many stale connections, causing the device to think a connection limit was exceeded and disrupt service. Exposure is most likely in legacy Cisco ASA 5500 series deployments still running ASA software 8.0 through 8.4, especially edge firewalls processing untrusted traffic. Treat this as a legacy perimeter-firewall resilience risk. It is not confirmed as actively exploited, but affected edge devices can disrupt business connectivity if still in service. Mitigation focus: Inventory Cisco ASA 5500 appliances and record ASA software versions.; Prioritize replacement or vendor-supported upgrade for ASA 8.0 through 8.4 systems.; Check Cisco guidance for Bug ID CSCtv19854 and apply the recommended fixed release..

Prepared: Jun 24, 2026, 12:52 UTC (UTC+00:00)

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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Vulnerability profileCVE Program record

Severity: Unknown
CVSS: Not scored
Known Exploited: No
Published: May 3, 2012, 20:00 UTC (UTC+00:00)

Official CVE source material

CNA and ADP enrichment extracted from CVE v5

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1Source links

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Source materials

CVE List V5 sourceCVE List V5

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus

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Weakness

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