CVE-2005-2533

CVE-2005-2533 is a low-severity vulnerability in Openvpn with a CVSS 2.0 base score of 2.1. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Description

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.

Frequently asked questions

What is CVE-2005-2533?
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.
How severe is CVE-2005-2533?
CVE-2005-2533 has a CVSS 2.0 base score of 2.1, rated low severity.
Is CVE-2005-2533 being actively exploited?
It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (48th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2005-2533?
CVE-2005-2533 primarily affects Openvpn. In total, 74 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2005-2533?
Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2005-2533 published?
CVE-2005-2533 was published on 2005-08-24 and last updated on 2026-06-16.

References

Affected products (74)

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