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CVE-2005-2533

11
FAUCET Score

CVE-2005-2533 describes a denial-of-service vulnerability affecting OpenVPN versions prior to 2.0.1 when operating in "dev tap" Ethernet bridging mode. An authenticated remote client can exhaust system memory by flooding the server with packets containing numerous spoofed MAC addresses. This vulnerability has a low severity score (CVSS 2.1) and is rated as a low risk, with no known public exploits, Metasploit modules, or community discussion. It is not listed on the KEV catalog and has not received media coverage, indicating a low likelihood of active exploitation.

Impacted Technologies

VendorProductVersion(s)CPE
2.0CPE matchmatch criteria
cpe:2.3:a:openvpn:openvpn:2.0:*:*:*:*:*:*:*
2.0.1_rc1CPE matchmatch criteria
cpe:2.3:a:openvpn:openvpn:2.0.1_rc1:*:*:*:*:*:*:*
2.0.1_rc2CPE matchmatch criteria
cpe:2.3:a:openvpn:openvpn:2.0.1_rc2:*:*:*:*:*:*:*
2.0.1_rc3CPE matchmatch criteria
cpe:2.3:a:openvpn:openvpn:2.0.1_rc3:*:*:*:*:*:*:*
2.0.1_rc4CPE matchmatch criteria
cpe:2.3:a:openvpn:openvpn:2.0.1_rc4:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

2.1LOW

AV:L/AC:L/Au:N/C:N/I:N/A:P

Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
Access Vector
LOCAL
Access Complexity
LOW
Authentication
NONE
Exploitability Score
3.9
Impact Score
2.9
CvssVersion
2.0

Exploit Intelligence

EPSS Score
0.68%
Probability of exploitation in next 30 days
EPSS Percentile
48.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0068 is in the 83rd percentile among its peer group of 2,096 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.6 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

openvpn.net / changelog.html
secunia.com / advisories/16463
secunia.com / advisories/17103
debian.org / security/2005/dsa-851
mandriva.com / security/advisories
PatchVendor Advisory