CVE-2009-2346

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.

Published: 2009-09-08 Last update: 2026-04-23 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2009-2346 is rated Moderate Risk (62/100): CVSS High severity, with medium exploitation likelihood (EPSS 2.58%). EPSS rose +1.74% over the last day, indicating growing attacker interest. Review affected assets and schedule remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2009-2346

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 0.84% 2.58% +1.74%
2 2025-03-30 1.08% 0.84% -0.24%
3 2025-03-29 — 1.08% —

Full EPSS history (10 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2009-2346

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
7.8 2.0 HIGH
AV:N/AC:L/Au:N/C:N/I:N/A:C Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:N)
No confidentiality impact.
Integrity impact (I:N)
No integrity impact.
Availability impact (A:C)
Complete availability impact.
 10.0 6.9 [email protected]

Weakness enumeration for CVE-2009-2346

OS Trackers for CVE-2009-2346

vendor priority summary link
debian not yet assigned CVE-2009-2346 not yet assigned priority: Debian including 1 source packages (asterisk), 2 status rows across 2 suites (bullseye, sid): resolved 2. https://security-tracker.debian.org/tracker/CVE-2009-2346
gentoo normal CVE-2009-2346: 1 GLSA(s) (201006-20), 1 atom(s) (net-misc/asterisk); latest impact normal. https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2009-2346
redhat high — https://access.redhat.com/security/cve/CVE-2009-2346
ubuntu low CVE-2009-2346 low priority: Ubuntu including 1 source packages (asterisk), 9 status rows across 9 suites (dapper, hardy, intrepid, jaunty, karmic, lucid, maverick, natty, upstream): ignored 4, not-affected 4, released 1. https://ubuntu.com/security/CVE-2009-2346

Affected software / configurations for CVE-2009-2346

Vendor Product Version Raw CPE
asterisk asterisk b.1.3.2 cpe:2.3:a:asterisk:asterisk:b.1.3.2:*:business:*:*:*:*:*
asterisk asterisk b.1.3.3 cpe:2.3:a:asterisk:asterisk:b.1.3.3:*:business:*:*:*:*:*
asterisk asterisk b.2.2.0 cpe:2.3:a:asterisk:asterisk:b.2.2.0:*:business:*:*:*:*:*
asterisk asterisk b.2.2.1 cpe:2.3:a:asterisk:asterisk:b.2.2.1:*:business:*:*:*:*:*
asterisk asterisk b.2.3.1 cpe:2.3:a:asterisk:asterisk:b.2.3.1:*:business:*:*:*:*:*
asterisk asterisk b.2.3.2 cpe:2.3:a:asterisk:asterisk:b.2.3.2:*:business:*:*:*:*:*
asterisk asterisk b.2.3.3 cpe:2.3:a:asterisk:asterisk:b.2.3.3:*:business:*:*:*:*:*
asterisk asterisk b.2.3.4 cpe:2.3:a:asterisk:asterisk:b.2.3.4:*:business:*:*:*:*:*
asterisk asterisk b.2.3.5 cpe:2.3:a:asterisk:asterisk:b.2.3.5:*:business:*:*:*:*:*
asterisk asterisk b.2.3.6 cpe:2.3:a:asterisk:asterisk:b.2.3.6:*:business:*:*:*:*:*
asterisk asterisk b.2.5.1 cpe:2.3:a:asterisk:asterisk:b.2.5.1:*:business:*:*:*:*:*
asterisk asterisk b.2.5.3 cpe:2.3:a:asterisk:asterisk:b.2.5.3:*:business:*:*:*:*:*
asterisk asterisk b.2.5.4 cpe:2.3:a:asterisk:asterisk:b.2.5.4:*:business:*:*:*:*:*
asterisk asterisk b.2.5.5 cpe:2.3:a:asterisk:asterisk:b.2.5.5:*:business:*:*:*:*:*
asterisk asterisk b.2.5.6 cpe:2.3:a:asterisk:asterisk:b.2.5.6:*:business:*:*:*:*:*
asterisk asterisk b.2.5.8 cpe:2.3:a:asterisk:asterisk:b.2.5.8:*:business:*:*:*:*:*
asterisk asterisk b.2.5.9 cpe:2.3:a:asterisk:asterisk:b.2.5.9:*:business:*:*:*:*:*
asterisk asterisk c.1.0_beta7 cpe:2.3:a:asterisk:asterisk:c.1.0_beta7:*:business:*:*:*:*:*
asterisk asterisk c.1.0_beta8 cpe:2.3:a:asterisk:asterisk:c.1.0_beta8:*:business:*:*:*:*:*
asterisk asterisk c.1.6 cpe:2.3:a:asterisk:asterisk:c.1.6:*:business:*:*:*:*:*
asterisk asterisk c.1.6.1 cpe:2.3:a:asterisk:asterisk:c.1.6.1:*:business:*:*:*:*:*
asterisk asterisk c.1.6.2 cpe:2.3:a:asterisk:asterisk:c.1.6.2:*:business:*:*:*:*:*
asterisk asterisk c.1.8.1 cpe:2.3:a:asterisk:asterisk:c.1.8.1:*:business:*:*:*:*:*
asterisk asterisk c.1.10.3 cpe:2.3:a:asterisk:asterisk:c.1.10.3:*:business:*:*:*:*:*
asterisk asterisk c.1.10.4 cpe:2.3:a:asterisk:asterisk:c.1.10.4:*:business:*:*:*:*:*
asterisk asterisk c.1.10.5 cpe:2.3:a:asterisk:asterisk:c.1.10.5:*:business:*:*:*:*:*
asterisk asterisk c.2.1.2.1 cpe:2.3:a:asterisk:asterisk:c.2.1.2.1:*:business:*:*:*:*:*
asterisk asterisk c.2.3 cpe:2.3:a:asterisk:asterisk:c.2.3:*:business:*:*:*:*:*
asterisk asterisk c.2.3.3 cpe:2.3:a:asterisk:asterisk:c.2.3.3:*:business:*:*:*:*:*
asterisk asterisk c.2.4.2 cpe:2.3:a:asterisk:asterisk:c.2.4.2:*:business:*:*:*:*:*
asterisk asterisk c.3.1.0 cpe:2.3:a:asterisk:asterisk:c.3.1.0:*:business:*:*:*:*:*
asterisk open_source 1.2.0 cpe:2.3:a:asterisk:open_source:1.2.0:*:*:*:*:*:*:*
asterisk open_source 1.2.0 cpe:2.3:a:asterisk:open_source:1.2.0:beta1:*:*:*:*:*:*
asterisk open_source 1.2.0 cpe:2.3:a:asterisk:open_source:1.2.0:beta2:*:*:*:*:*:*
asterisk open_source 1.2.0 cpe:2.3:a:asterisk:open_source:1.2.0:rc1:*:*:*:*:*:*
asterisk open_source 1.2.0 cpe:2.3:a:asterisk:open_source:1.2.0:rc2:*:*:*:*:*:*
asterisk open_source 1.2.1 cpe:2.3:a:asterisk:open_source:1.2.1:*:*:*:*:*:*:*
asterisk open_source 1.2.2 cpe:2.3:a:asterisk:open_source:1.2.2:*:*:*:*:*:*:*
asterisk open_source 1.2.2 cpe:2.3:a:asterisk:open_source:1.2.2:netsec:*:*:*:*:*:*
asterisk open_source 1.2.3 cpe:2.3:a:asterisk:open_source:1.2.3:*:*:*:*:*:*:*
asterisk open_source 1.2.3 cpe:2.3:a:asterisk:open_source:1.2.3:netsec:*:*:*:*:*:*
asterisk open_source 1.2.4 cpe:2.3:a:asterisk:open_source:1.2.4:*:*:*:*:*:*:*
asterisk open_source 1.2.4 cpe:2.3:a:asterisk:open_source:1.2.4:netsec:*:*:*:*:*:*
asterisk open_source 1.2.5 cpe:2.3:a:asterisk:open_source:1.2.5:*:*:*:*:*:*:*
asterisk open_source 1.2.5 cpe:2.3:a:asterisk:open_source:1.2.5:netsec:*:*:*:*:*:*
asterisk open_source 1.2.6 cpe:2.3:a:asterisk:open_source:1.2.6:*:*:*:*:*:*:*
asterisk open_source 1.2.6 cpe:2.3:a:asterisk:open_source:1.2.6:netsec:*:*:*:*:*:*
asterisk open_source 1.2.7 cpe:2.3:a:asterisk:open_source:1.2.7:*:*:*:*:*:*:*
asterisk open_source 1.2.7 cpe:2.3:a:asterisk:open_source:1.2.7:netsec:*:*:*:*:*:*
asterisk open_source 1.2.7.1 cpe:2.3:a:asterisk:open_source:1.2.7.1:*:*:*:*:*:*:*
asterisk open_source 1.2.7.1 cpe:2.3:a:asterisk:open_source:1.2.7.1:netsec:*:*:*:*:*:*
asterisk open_source 1.2.8 cpe:2.3:a:asterisk:open_source:1.2.8:*:*:*:*:*:*:*
asterisk open_source 1.2.8 cpe:2.3:a:asterisk:open_source:1.2.8:netsec:*:*:*:*:*:*
asterisk open_source 1.2.9 cpe:2.3:a:asterisk:open_source:1.2.9:*:*:*:*:*:*:*
asterisk open_source 1.2.9.1 cpe:2.3:a:asterisk:open_source:1.2.9.1:*:*:*:*:*:*:*
asterisk open_source 1.2.9.1 cpe:2.3:a:asterisk:open_source:1.2.9.1:netsec:*:*:*:*:*:*
asterisk open_source 1.2.10 cpe:2.3:a:asterisk:open_source:1.2.10:*:*:*:*:*:*:*
asterisk open_source 1.2.10 cpe:2.3:a:asterisk:open_source:1.2.10:netsec:*:*:*:*:*:*
asterisk open_source 1.2.11 cpe:2.3:a:asterisk:open_source:1.2.11:*:*:*:*:*:*:*
asterisk open_source 1.2.11 cpe:2.3:a:asterisk:open_source:1.2.11:netsec:*:*:*:*:*:*
asterisk open_source 1.2.12 cpe:2.3:a:asterisk:open_source:1.2.12:*:*:*:*:*:*:*
asterisk open_source 1.2.12 cpe:2.3:a:asterisk:open_source:1.2.12:netsec:*:*:*:*:*:*
asterisk open_source 1.2.12.1 cpe:2.3:a:asterisk:open_source:1.2.12.1:*:*:*:*:*:*:*
asterisk open_source 1.2.12.1 cpe:2.3:a:asterisk:open_source:1.2.12.1:netsec:*:*:*:*:*:*
asterisk open_source 1.2.13 cpe:2.3:a:asterisk:open_source:1.2.13:*:*:*:*:*:*:*
asterisk open_source 1.2.13 cpe:2.3:a:asterisk:open_source:1.2.13:netsec:*:*:*:*:*:*
asterisk open_source 1.2.14 cpe:2.3:a:asterisk:open_source:1.2.14:*:*:*:*:*:*:*
asterisk open_source 1.2.14 cpe:2.3:a:asterisk:open_source:1.2.14:netsec:*:*:*:*:*:*
asterisk open_source 1.2.15 cpe:2.3:a:asterisk:open_source:1.2.15:*:*:*:*:*:*:*
asterisk open_source 1.2.15 cpe:2.3:a:asterisk:open_source:1.2.15:netsec:*:*:*:*:*:*
asterisk open_source 1.2.16 cpe:2.3:a:asterisk:open_source:1.2.16:*:*:*:*:*:*:*
asterisk open_source 1.2.16 cpe:2.3:a:asterisk:open_source:1.2.16:netsec:*:*:*:*:*:*
asterisk open_source 1.2.17 cpe:2.3:a:asterisk:open_source:1.2.17:*:*:*:*:*:*:*
asterisk open_source 1.2.17 cpe:2.3:a:asterisk:open_source:1.2.17:netsec:*:*:*:*:*:*
asterisk open_source 1.2.18 cpe:2.3:a:asterisk:open_source:1.2.18:*:*:*:*:*:*:*
asterisk open_source 1.2.18 cpe:2.3:a:asterisk:open_source:1.2.18:netsec:*:*:*:*:*:*
asterisk open_source 1.2.19 cpe:2.3:a:asterisk:open_source:1.2.19:*:*:*:*:*:*:*
asterisk open_source 1.2.19 cpe:2.3:a:asterisk:open_source:1.2.19:netsec:*:*:*:*:*:*
asterisk open_source 1.2.20 cpe:2.3:a:asterisk:open_source:1.2.20:*:*:*:*:*:*:*
asterisk open_source 1.2.20 cpe:2.3:a:asterisk:open_source:1.2.20:netsec:*:*:*:*:*:*

References for CVE-2009-2346

cvelogic Threat Intelligence