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Vulnerability record · CVE-2009-2346 · published 8 September 2009

CVE-2009-2346: Asterisk memory buffer overflow vulnerability

Asterisk · Asterisk

The IAX2 protocol implementation in Asterisk Open Source 1.2.x before 1.2.35, 1.4.x before 1.4.26.2, 1.6.0.x before 1.6.0.15, and 1.6.1.x before 1.6.1.6; Business Edition B.x.x before B.2.5.10, C.2.x before C.2.4.3, and C.3.x before C.3.1.1; and s800i 1.3.x before 1.3.0.3 allows remote attackers to cause a denial of service (call-number exhaustion) by initiating many IAX2 message exchanges, a related issue to CVE-2008-3263.

7.8 CVSS 2.0 High EPSS 2.6% · top 15.4% CWE-119 · Memory buffer overflow
7.8CVSS 2.0 base score
2.6%EPSS exploitation probability, 30 days
NoNot in CISA KEV
5Affected product versions listed by NVD
10References
16 Jun 2026Last modified by NVD

Description

The IAX2 protocol implementation in Asterisk Open Source 1.2.x before 1.2.35, 1.4.x before 1.4.26.2, 1.6.0.x before 1.6.0.15, and 1.6.1.x before 1.6.1.6; Business Edition B.x.x before B.2.5.10, C.2.x before C.2.4.3, and C.3.x before C.3.1.1; and s800i 1.3.x before 1.3.0.3 allows remote attackers to cause a denial of service (call-number exhaustion) by initiating many IAX2 message exchanges, a related issue to CVE-2008-3263.

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

Affected products

5 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://downloads.asterisk.org/pub/security/AST-2009-006.html Vendor Advisory
http://secunia.com/advisories/36593 Vendor Advisory
http://securitytracker.com/id?1022819
http://www.securityfocus.com/archive/1/506257/100/0/threaded
http://www.securityfocus.com/bid/36275
http://downloads.asterisk.org/pub/security/AST-2009-006.html Vendor Advisory
http://secunia.com/advisories/36593 Vendor Advisory
http://securitytracker.com/id?1022819
http://www.securityfocus.com/archive/1/506257/100/0/threaded
http://www.securityfocus.com/bid/36275

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2009-2346), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.