CVE-1999-1520 : Detail

The EPSS model produces a probability score between 0 and 1 (0 and 100%). The higher the score, the greater the probability that a vulnerability will be exploited.

Date	EPSS V0	EPSS V1	EPSS V2 (> 2022-02-04)	EPSS V3 (> 2025-03-07)	EPSS V4 (> 2025-03-17)
2022-02-06	–	–	14.72%	–	–
2022-04-03	–	–	14.72%	–	–
2023-03-12	–	–	–	0.76%	–
2023-06-11	–	–	–	0.76%	–
2023-08-13	–	–	–	0.72%	–
2024-01-21	–	–	–	0.72%	–
2024-02-11	–	–	–	0.72%	–
2024-06-02	–	–	–	0.72%	–
2024-12-22	–	–	–	0.6%	–
2025-02-02	–	–	–	0.6%	–
2025-02-16	–	–	–	0.46%	–
2025-03-02	–	–	–	0.46%	–
2025-01-19	–	–	–	0.6%	–
2025-02-02	–	–	–	0.6%	–
2025-02-16	–	–	–	0.46%	–
2025-03-09	–	–	–	0.46%	–
2025-03-18	–	–	–	–	36.68%
2025-03-30	–	–	–	–	39.98%
2025-03-30	–	–	–	–	39.98,%

The percentile is used to rank CVE according to their EPSS score. For example, a CVE in the 95th percentile according to its EPSS score is more likely to be exploited than 95% of other CVE. Thus, the percentile is used to compare the EPSS score of a CVE with that of other CVE.

Date	Percentile
2022-02-06	91%
2022-04-03	96%
2023-03-12	78%
2023-06-11	79%
2023-08-13	78%
2024-01-21	79%
2024-02-11	8%
2024-06-02	81%
2024-12-22	78%
2025-02-02	79%
2025-02-16	75%
2025-03-02	76%
2025-01-19	78%
2025-02-02	79%
2025-02-16	75%
2025-03-09	76%
2025-03-18	97%
2025-03-30	97%
2025-03-30	97%

source: https://www.securityfocus.com/bid/256/info A vulnerability in Microsoft Site Server's Ad Server Sample directory allows the retrieval of a site's configuration file (SITE.CSC) which contains sensitive information pertaining to an SQL database. The AdSamples directory is a part of the Ad Server component of Site Server which can be installed optionally. If the sample directory is installed and access controls are not applied, any user can read the site's SITE.CSC file. This file can may contain the DSN, username and password to access the Site Server's SQL database. The URL below contains the syntax to view the SITE.CSC file in a default installation: http://sitename/adsamples/config/site.csc A text editor may be used to view the contents of the SITE.CSC file. This file may contain the DSN, username, and password used to access the related SQL database.