HOMEVULNERABILITIESCVE-2009-2346
HIGH

CVE-2009-2346

CWE-119Published: September 8, 2009· Updated: Jun 16, 2026

7.8
CVSS v3.1

Official 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.

NVD Source

Technical Analysis

CVE-2009-2346 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation requires some privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

From a weakness classification perspective (CWE-119): Buffer overflow vulnerabilities can lead to arbitrary code execution or denial of service by corrupting adjacent memory.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.
User Interaction
Scope
Impact
ConfidentialityNone
IntegrityNone
AvailabilityC
AV:N/AC:L/Au:N/C:N/I:N/A:C

Affected Vendors & Products

asterisk4 product(s)
asteriskopen sourceopensourceappliance s800i
sangoma1 product(s)
asterisk
Source: NVD CPE · 127 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

ADVISORYhttp://downloads.asterisk.org/pub/security/AST-2009-006.html
ADVISORYhttp://secunia.com/advisories/36593
ADVISORYhttp://downloads.asterisk.org/pub/security/AST-2009-006.html
ADVISORYhttp://secunia.com/advisories/36593

All References (10)

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

Quick Facts

CVE IDCVE-2009-2346
CVSS Score7.8 / 10
SeverityHIGH
WeaknessCWE-119
CISA KEVNo
Affected2 vendor(s)
PublishedSep 8, 2009

Related CVEs (CWE-119)

CVE-2009-3846
10.0
CVE-2009-0869
10.0
CVE-2009-1382
10.0
CVE-2009-3952
10.0
CVE-2009-0836
10.0
CVE-2009-4180
10.0

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2009-2346 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.
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