OpenSSL 0.9.7 before 0.9.7l, 0.9.8 before 0.9.8d, and earlier versions allows attackers to cause a denial of service (CPU consumption) via parasitic public keys with large (1) "public exponent" or (2) "public modulus" values in X.509 certificates that require extra time to process when using RSA signature verification.
CVE-2006-2940 is a security vulnerability that . Impacting 1 product from openssl organizations running these solutions should prioritize assessment and patching.
Originally identified in 2006, 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.
2006-09-28T18:07:00.000
2026-06-16T22:26:05.187
Modified
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 | openssl | openssl | 0.9.1c | Yes |
| Application | openssl | openssl | 0.9.2b | Yes |
| Application | openssl | openssl | 0.9.3 | Yes |
| Application | openssl | openssl | 0.9.3a | Yes |
| Application | openssl | openssl | 0.9.4 | Yes |
| Application | openssl | openssl | 0.9.5 | Yes |
| Application | openssl | openssl | 0.9.5 | Yes |
| Application | openssl | openssl | 0.9.5 | Yes |
| Application | openssl | openssl | 0.9.5a | Yes |
| Application | openssl | openssl | 0.9.5a | Yes |
| Application | openssl | openssl | 0.9.5a | Yes |
| Application | openssl | openssl | 0.9.6 | Yes |
| Application | openssl | openssl | 0.9.6 | Yes |
| Application | openssl | openssl | 0.9.6 | Yes |
| Application | openssl | openssl | 0.9.6 | Yes |
| Application | openssl | openssl | 0.9.6a | Yes |
| Application | openssl | openssl | 0.9.6a | Yes |
| Application | openssl | openssl | 0.9.6a | Yes |
| Application | openssl | openssl | 0.9.6a | Yes |
| Application | openssl | openssl | 0.9.6b | Yes |
| Application | openssl | openssl | 0.9.6c | Yes |
| Application | openssl | openssl | 0.9.6d | Yes |
| Application | openssl | openssl | 0.9.6e | Yes |
| Application | openssl | openssl | 0.9.6f | Yes |
| Application | openssl | openssl | 0.9.6g | Yes |
| Application | openssl | openssl | 0.9.6h | Yes |
| Application | openssl | openssl | 0.9.6i | Yes |
| Application | openssl | openssl | 0.9.6j | Yes |
| Application | openssl | openssl | 0.9.6k | Yes |
| Application | openssl | openssl | 0.9.6l | Yes |
| Application | openssl | openssl | 0.9.6m | Yes |
| Application | openssl | openssl | 0.9.7 | Yes |
| Application | openssl | openssl | 0.9.7a | Yes |
| Application | openssl | openssl | 0.9.7b | Yes |
| Application | openssl | openssl | 0.9.7c | Yes |
| Application | openssl | openssl | 0.9.7d | Yes |
| Application | openssl | openssl | 0.9.7e | Yes |
| Application | openssl | openssl | 0.9.7f | Yes |
| Application | openssl | openssl | 0.9.7g | Yes |
| Application | openssl | openssl | 0.9.7h | Yes |
| Application | openssl | openssl | 0.9.7i | Yes |
| Application | openssl | openssl | 0.9.7j | Yes |
| Application | openssl | openssl | 0.9.7k | Yes |
| Application | openssl | openssl | 0.9.8 | Yes |
| Application | openssl | openssl | 0.9.8a | Yes |
| Application | openssl | openssl | 0.9.8b | Yes |
| Application | openssl | openssl | 0.9.8c | 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 openssl'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.