CVE-2006-5873

Name: CVE-2006-5873
Creator: NVD / NIST
Published: 2006-12-12T00:28:00+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 2.22%

Last modified Jun 16, 2026

CVE-2006-5873 is a vulnerability of currently unknown severity. 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.. EPSS estimates a 2.22% chance of exploitation in the next 30 days.

Description

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.

Metrics

EPSS Probability

2.22%

80.5th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

Vendor	Product	Versions
L2tpns	L2tpns	1.1
L2tpns	L2tpns	2.0.13
L2tpns	L2tpns	2.1
Debian	Debian Linux	3.1

References

http://l2tpns.cvs.sourceforge.net/l2tpns/l2tpns/cluster.c?r1=1.53&r2=1.54Patch
http://secunia.com/advisories/23230Patch, Vendor Advisory
http://secunia.com/advisories/23333Patch, Vendor Advisory
http://sourceforge.net/project/shownotes.php?group_id=97282&release_id=468202Vendor Advisory
http://www.debian.org/security/2006/dsa-1230Patch, Vendor Advisory
http://www.securityfocus.com/bid/21443Vendor Advisory
http://www.vupen.com/english/advisories/2006/4860
https://exchange.xforce.ibmcloud.com/vulnerabilities/30732
http://l2tpns.cvs.sourceforge.net/l2tpns/l2tpns/cluster.c?r1=1.53&r2=1.54Patch
http://secunia.com/advisories/23230Patch, Vendor Advisory
http://secunia.com/advisories/23333Patch, Vendor Advisory
http://sourceforge.net/project/shownotes.php?group_id=97282&release_id=468202Vendor Advisory
http://www.debian.org/security/2006/dsa-1230Patch, Vendor Advisory
http://www.securityfocus.com/bid/21443Vendor Advisory
http://www.vupen.com/english/advisories/2006/4860
https://exchange.xforce.ibmcloud.com/vulnerabilities/30732

Timeline

Published: Dec 12, 2006
Last Modified: Jun 16, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2006-5873?

How severe is CVE-2006-5873?

Severity scoring for CVE-2006-5873 is pending analysis. The EPSS model estimates a 2.22% probability of exploitation in the next 30 days.

How do I fix CVE-2006-5873?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2006-5873?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST