中文摘要：

为了更加有效地评估漏洞威胁，在原有的基于关联性漏洞评估方法的基础上，从漏洞的可利用性出发，分析了通用漏洞评估系统（CVSS）作为漏洞可利用性评价指标的缺点。在改进CVSS评价指标的基础上，提出了更为合理的漏洞可利用性评估体系，并改进了原有的漏洞评估方法。该方法能够有效地挖掘漏洞自身特点，科学地进行漏洞评估，并通过实验验证了该方法的合理性和有效性。

英文摘要：

For the purpose of assessing vulnerabilities more effectively, from the vulnerability availability, this paper analyzed the shortcomings of common vulnerability scoring system（CVSS） as the evaluation indicators based on the vulnerability correla- tion assessment method. Meanwhile, on the basis of the improved CVSS evaluation indicators, this paper put forward a more sensible vulnerability availability evaluation system and promoted the original vulnerability assessment method. This method al- so mines its own characteristics of vulnerability effectively, assesses vulnerability scientifically and verifies its rationality and validity by experiments.