The SIP channel driver in Asterisk Open Source 1.2.x before 1.2.34, 1.4.x before 1.4.26.1, 1.6.0.x before 1.6.0.12, and 1.6.1.x before 1.6.1.4; Asterisk Business Edition A.x.x, B.x.x before B.2.5.9, C.2.x before C.2.4.1, and C.3.x before C.3.1; and Asterisk Appliance s800i 1.2.x before 1.3.0.3 does not use a maximum width when invoking sscanf style functions, which allows remote attackers to cause a denial of service (stack memory consumption) via SIP packets containing large sequences of ASCII decimal characters, as demonstrated via vectors related to (1) the CSeq value in a SIP header, (2) large Content-Length value, and (3) SDP.
CVE-2009-2726 is a security vulnerability that . Impacting 3 products from digium, from digium, from digium organizations running these solutions should prioritize assessment and patching.
Originally identified in 2009, this vulnerability predates many modern security frameworks and practices. The vulnerability landscape of that era was characterized by different threat models and less mature defense mechanisms compared to contemporary standards.
2009-08-12T10:30:01.110
2025-04-09T00:30:58.490
Deferred
CVSSv2: 7.8 (HIGH)
AV:N/AC:L/Au:N/C:N/I:N/A:C
10.0
6.9
| Type | Vendor | Product | Version/Range | Vulnerable? |
|---|---|---|---|---|
| Application | digium | asterisk | < b.2.5.9 | Yes |
| Application | digium | asterisk | ≤ c.2.4.1 | Yes |
| Application | digium | asterisk | < c.3.1 | Yes |
| Operating System | digium | s800i_firmware | < 1.3.0.3 | Yes |
| Hardware | digium | s800i | - | No |
| Application | digium | asterisk | < 1.2.34 | Yes |
| Application | digium | asterisk | < 1.4.26.1 | Yes |
| Application | digium | asterisk | < 1.6.0.12 | Yes |
| Application | digium | asterisk | < 1.6.1.4 | Yes |
SecUtils normalizes and enriches National Vulnerability Database (NVD) records by standardizing vendor and product identifiers, aggregating vulnerability metadata from both NVD and MITRE sources, and providing structured context for security teams. For digium's affected products, we extract Common Platform Enumeration (CPE) data, Common Weakness Enumeration (CWE) classifications, CVSS severity metrics, and reference data to enable rapid vulnerability prioritization and asset correlation. This record contains no exploit code, proof-of-concept instructions, or attack methodologies—only defensive intelligence necessary for patch management, risk assessment, and security operations.