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CVE-2009-0780

15
FAUCET Score

CVE-2009-0780 describes a denial-of-service vulnerability in the bgpd daemon within OpenBSD versions 4.3 and 4.4. Specifically, the aspath_prepend function in rde_attr.c is susceptible to a crash when processing an Autonomous System (AS) advertisement containing an excessively long AS path. This vulnerability has a CVSS score of 5.0, indicating a medium severity with a network-based attack vector, low attack complexity, and potential for partial availability impact. There is no known active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
4.3CPE matchmatch criteria
cpe:2.3:o:openbsd:openbsd:4.3:*:*:*:*:*:*:*
4.4CPE matchmatch criteria
cpe:2.3:o:openbsd:openbsd:4.4:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

5.0MEDIUM

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

Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Exploitability Score
10.0
Impact Score
2.9
CvssVersion
2.0

Exploit Intelligence

EPSS Score
1.56%
Probability of exploitation in next 30 days
EPSS Percentile
72.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0156 is in the 56th percentile among its peer group of 23,725 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, 0.1 Bluesky, 0.0 Mastodon, and 0.4 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

openbsd.org / errata43.html
PatchVendor Advisory
openbsd.org / errata44.html
PatchVendor Advisory
osvdb.org / 52271
secunia.com / advisories/33975
Vendor Advisory
exchange.xforce.ibmcloud.com / vulnerabilities/48812
securityfocus.com / bid/33828
securitytracker.com / id