CVE-2006-5873 json
Buffer overflow in the cluster_process_heartbeat function in cluster.c in layer 2 tunneling protocol network server (l2tpns) before 2.1.21…
published 2006-12-12 19 y ago modified 2026-06-16 4 mo ago also EUVD-2006-5857
- cvss
- 7.8
- version 2.0, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 2.3%
- EPSS 2.3% chance of exploitation in 30 days, percentile 83%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
- l2tpns Debian 14, Debian 13, Debian 12 2.1.21-1
debian advisories DEBIAN-CVE-2006-5873
Exploit prediction
2.31% chance of exploitation in the next 30 days, higher than 83% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 2.0 | 7.8 | AV:N/AC:L/Au:N/C:N/I:N/A:C |
References
-
debian.org
/security/2006/dsa-1230
vendor-advisory, patch
-
secunia.com
/advisories/23333
third-party-advisory, patch, vendor-advisory
-
secunia.com
/advisories/23230
third-party-advisory, patch, vendor-advisory
-
l2tpns.cvs.sourceforge.net
/l2tpns/l2tpns/cluster.c?r1=1.53&r2=1.54
patch
-
sourceforge.net
/project/shownotes.php?group_id=97282&release_id=468202
vendor-advisory
-
securityfocus.com
/bid/21443
vdb-entry, vendor-advisory
-
exchange.xforce.ibmcloud.com
/vulnerabilities/30732
vdb-entry
-
vupen.com
/english/advisories/2006/4860
vdb-entry
Sources
- CVE List CVE-2006-5873
- NVD CVE-2006-5873
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.