charon/sa/ike_sa.c in the charon daemon in strongSWAN before 4.3.1 allows remote attackers to cause a denial of service (NULL pointer dereference and crash) via an invalid IKE_SA_INIT request that triggers "an incomplete state," followed by a CREATE_CHILD_SA request.
CVE-2009-1957 is a security vulnerability that . Impacting 1 product from strongswan 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.
2009-06-08T01:00:00.733
2025-04-09T00:30:58.490
Deferred
CVSSv2: 5.0 (MEDIUM)
AV:N/AC:L/Au:N/C:N/I:N/A:P
10.0
2.9
| Type | Vendor | Product | Version/Range | Vulnerable? |
|---|---|---|---|---|
| Application | strongswan | strongswan | ≤ 4.3.0 | Yes |
| Application | strongswan | strongswan | 2.0.0 | Yes |
| Application | strongswan | strongswan | 2.0.1 | Yes |
| Application | strongswan | strongswan | 2.0.2 | Yes |
| Application | strongswan | strongswan | 2.1.0 | Yes |
| Application | strongswan | strongswan | 2.1.1 | Yes |
| Application | strongswan | strongswan | 2.1.2 | Yes |
| Application | strongswan | strongswan | 2.1.3 | Yes |
| Application | strongswan | strongswan | 2.1.4 | Yes |
| Application | strongswan | strongswan | 2.1.5 | Yes |
| Application | strongswan | strongswan | 2.2.0 | Yes |
| Application | strongswan | strongswan | 2.2.1 | Yes |
| Application | strongswan | strongswan | 2.2.2 | Yes |
| Application | strongswan | strongswan | 2.3.0 | Yes |
| Application | strongswan | strongswan | 2.3.1 | Yes |
| Application | strongswan | strongswan | 2.3.2 | Yes |
| Application | strongswan | strongswan | 2.4.0 | Yes |
| Application | strongswan | strongswan | 2.4.0a | Yes |
| Application | strongswan | strongswan | 2.4.1 | Yes |
| Application | strongswan | strongswan | 2.4.2 | Yes |
| Application | strongswan | strongswan | 2.4.3 | Yes |
| Application | strongswan | strongswan | 2.4.4 | Yes |
| Application | strongswan | strongswan | 2.5.0 | Yes |
| Application | strongswan | strongswan | 2.5.1 | Yes |
| Application | strongswan | strongswan | 2.5.2 | Yes |
| Application | strongswan | strongswan | 2.5.3 | Yes |
| Application | strongswan | strongswan | 2.5.4 | Yes |
| Application | strongswan | strongswan | 2.5.5 | Yes |
| Application | strongswan | strongswan | 2.5.6 | Yes |
| Application | strongswan | strongswan | 2.5.7 | Yes |
| Application | strongswan | strongswan | 2.6.0 | Yes |
| Application | strongswan | strongswan | 2.6.1 | Yes |
| Application | strongswan | strongswan | 2.6.2 | Yes |
| Application | strongswan | strongswan | 2.6.3 | Yes |
| Application | strongswan | strongswan | 2.6.4 | Yes |
| Application | strongswan | strongswan | 2.6.16 | Yes |
| Application | strongswan | strongswan | 2.6.20 | Yes |
| Application | strongswan | strongswan | 2.7.0 | Yes |
| Application | strongswan | strongswan | 2.8.0 | Yes |
| Application | strongswan | strongswan | 2.8.1 | Yes |
| Application | strongswan | strongswan | 2.8.2 | Yes |
| Application | strongswan | strongswan | 2.8.3 | Yes |
| Application | strongswan | strongswan | 2.8.4 | Yes |
| Application | strongswan | strongswan | 2.8.5 | Yes |
| Application | strongswan | strongswan | 2.8.6 | Yes |
| Application | strongswan | strongswan | 2.8.7 | Yes |
| Application | strongswan | strongswan | 2.8.8 | Yes |
| Application | strongswan | strongswan | 4.0.0 | Yes |
| Application | strongswan | strongswan | 4.0.1 | Yes |
| Application | strongswan | strongswan | 4.0.2 | Yes |
| Application | strongswan | strongswan | 4.0.3 | Yes |
| Application | strongswan | strongswan | 4.0.4 | Yes |
| Application | strongswan | strongswan | 4.0.5 | Yes |
| Application | strongswan | strongswan | 4.0.6 | Yes |
| Application | strongswan | strongswan | 4.0.7 | Yes |
| Application | strongswan | strongswan | 4.1.0 | Yes |
| Application | strongswan | strongswan | 4.1.1 | Yes |
| Application | strongswan | strongswan | 4.1.2 | Yes |
| Application | strongswan | strongswan | 4.1.3 | Yes |
| Application | strongswan | strongswan | 4.1.4 | Yes |
| Application | strongswan | strongswan | 4.1.5 | Yes |
| Application | strongswan | strongswan | 4.1.6 | Yes |
| Application | strongswan | strongswan | 4.1.7 | Yes |
| Application | strongswan | strongswan | 4.1.8 | Yes |
| Application | strongswan | strongswan | 4.1.9 | Yes |
| Application | strongswan | strongswan | 4.1.10 | Yes |
| Application | strongswan | strongswan | 4.1.11 | Yes |
| Application | strongswan | strongswan | 4.2.0 | Yes |
| Application | strongswan | strongswan | 4.2.1 | Yes |
| Application | strongswan | strongswan | 4.2.10 | 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 strongswan'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.