CVE-2006-5873
HIGH · CVSS 7.8EPSS 2.3%EU EUVD
Buffer overflow in the cluster_process_heartbeat function in cluster.c in layer 2 tunneling protocol network server (l2tpns) before 2.1.21 allows remote attackers to cause a denial of service via a large heartbeat packet.
Key facts
- CVSS score
- 7.8 (v2.0)
- Severity
- HIGH
- CVSS vector
AV:N/AC:L/Au:N/C:N/I:N/A:C- EPSS score
- 2.3% (83th percentile)
- In CISA KEV
- No
- In EU EUVD
- Yes (EUVD-2006-5857)
- Published
- December 12, 2006
- NVD last modified
- June 16, 2026
- Status
- Modified
EU Vulnerability Database (EUVD)
This vulnerability is also tracked by ENISA as EUVD-2006-5857 in the EU Vulnerability Database. Last updated in EUVD on August 7, 2024.
View on the EU Vulnerability DatabaseAffected products
- debian / debian linux
- l2tpns / l2tpns
- l2tpns / l2tpns
- l2tpns / l2tpns
References
- http://l2tpns.cvs.sourceforge.net/l2tpns/l2tpns/cluster.c?r1=1.53&r2=1.54(Patch)
- http://secunia.com/advisories/23230(Patch, Vendor Advisory)
- http://secunia.com/advisories/23333(Patch, Vendor Advisory)
- http://sourceforge.net/project/shownotes.php?group_id=97282&release_id=468202(Vendor Advisory)
- http://www.debian.org/security/2006/dsa-1230(Patch, Vendor Advisory)
- http://www.securityfocus.com/bid/21443(Vendor Advisory)
- http://www.vupen.com/english/advisories/2006/4860
- https://exchange.xforce.ibmcloud.com/vulnerabilities/30732
Last updated September 17, 2026 · Source: NVD, CISA KEV, FIRST.org EPSS
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