CVE-2005-2533: n/a vulnerability

CVE-2005-2533: OpenVPN before 2.0.1, when running in "dev tap" Ethernet bridging mode, allows remote authenticated clients...

OpenVPN before 2.0.1, when running in "dev tap" Ethernet bridging mode, allows remote authenticated clients to cause a denial of service (memory exhaustion) via a flood of packets with a large number of spoofed MAC addresses.

UnknownCVSS not scoredNot KEV-listedUpdatedAug 7, 2024, 22:30 UTC (UTC+00:00)

Security readout for executives and security teams

This is an old OpenVPN denial-of-service issue. If a server runs a pre-2.0.1 OpenVPN release in TAP Ethernet bridging mode, an authenticated VPN client could exhaust server memory and disrupt availability. Likely exposure is limited to OpenVPN deployments older than 2.0.1 using TAP Ethernet bridging mode. The bundle does not identify other affected products. Exposure also requires a remote authenticated client. Prioritize if any legacy OpenVPN bridge-mode servers remain in production. Modern, patched, or non-TAP deployments are less likely to be affected based on the provided sources. Mitigation focus: Upgrade OpenVPN to 2.0.1 or later where applicable.; Apply vendor distribution updates referenced by Debian or Mandriva advisories.; Check vendor guidance before relying on configuration-only mitigations..

Prepared: Jun 29, 2026, 18:15 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: Aug 24, 2005, 04:00 UTC (UTC+00:00)

Official CVE source material

CNA and ADP enrichment extracted from CVE v5

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0CVSS vectors

0Timeline events

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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

n/an/an/aListed

Weakness

CWE details

No CWE listed

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