OP
Product
OpenBSD
by OpenBSD · last CVE Sep 30, 2026
203
CVEs
0
On KEV
9.8
Max CVSS
1
New 30D
Severity mix
Critical 11High 23Medium 23Low 1
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Add OpenBSD to your stack to get only the CVEs that touch what you run.

CVECVSSEPSSPublishedSummary · affected versions
CVE-2002-0572
–
2%
Jul 3
FreeBSD 4.5 and earlier, and possibly other BSD-based operating systems, allows local users to write to or read from restricted files by closing the file descriptors 0 (standard…
Affected: 2.0; 2.1; 2.2; 2.3
CVE-2002-0557
–
1%
Jul 3
Vulnerability in OpenBSD 3.0, when using YP with netgroups in the password database, causes (1) rexec or (2) rsh to run another user's shell, or (3) atrun to change to a different…
Affected: 3.0
CVE-2002-0542
–
2%
Jul 3
mail in OpenBSD 2.9 and 3.0 processes a tilde (~) escape character in a message even when it is not in interactive mode, which could allow local users to gain root privileges via…
Affected: 2.9; 3.0
CVE-2002-0381
–
2%
Jun 25
The TCP implementation in various BSD operating systems (tcp_input.c) does not properly block connections to broadcast addresses, which could allow remote attackers to bypass…
Affected: All versions, or not specified
CVE-2001-1415
–
0%
Nov 13
vi.recover in OpenBSD before 3.1 allows local users to remove arbitrary zero-byte files such as device nodes
Affected: 2.9; 3.0
CVE-2001-0670
–
7%
Oct 3
Buffer overflow in BSD line printer daemon (in.lpd or lpd) in various BSD-based operating systems allows remote attackers to execute arbitrary code via an incomplete print job…
Affected: All versions, or not specified
CVE-2001-1145
–
0%
Aug 17
fts routines in FreeBSD 4.3 and earlier, NetBSD before 1.5.2, and OpenBSD 2.9 and earlier can be forced to change (chdir) into a different directory than intended when the…
Affected: through 2.9
CVE-2001-0554
–
39%
Aug 14
Buffer overflow in BSD-based telnetd telnet daemon on various operating systems allows remote attackers to execute arbitrary commands via a set of options including AYT (Are You…
Affected: 2.0; 2.1; 2.2; 2.3; 2.4; 2.5; +3 more
CVE-2001-1244
–
22%
Jul 7
Multiple TCP implementations could allow remote attackers to cause a denial of service (bandwidth and CPU exhaustion) by setting the maximum segment size (MSS) to a very small…
Affected: 2.8; 2.9
CVE-2001-0378
–
0%
Jun 27
readline prior to 4.1, in OpenBSD 2.8 and earlier, creates history files with insecure permissions, which allows a local attacker to recover potentially sensitive information via…
Affected: through 2.8
CVE-2001-0402
–
2%
Jun 18
IPFilter 3.4.16 and earlier does not include sufficient session information in its cache, which allows remote attackers to bypass access restrictions by sending fragmented packets…
Affected: 2.8
CVE-2001-0247
–
19%
Jun 18
Buffer overflows in BSD-based FTP servers allows remote attackers to execute arbitrary commands via a long pattern string containing a {} sequence, as seen in (1) g_opendir, (2)…
Affected: 2.3; 2.4; 2.5; 2.6; 2.7; 2.8
CVE-2001-1047
–
0%
Jun 2
Race condition in OpenBSD VFS allows local users to cause a denial of service (kernel panic) by (1) creating a pipe in one thread and causing another thread to set one of the file…
Affected: 2.6; 2.7; 2.8; 2.9
CVE-2001-0284
–
3%
May 3
Buffer overflow in IPSEC authentication mechanism for OpenBSD 2.8 and earlier allows remote attackers to cause a denial of service and possibly execute arbitrary commands via a…
Affected: through 2.8
CVE-2001-0268
–
1%
May 3
The i386_set_ldt system call in NetBSD 1.5 and earlier, and OpenBSD 2.8 and earlier, when the USER_LDT kernel option is enabled, does not validate a call gate target, which allows…
Affected: through 2.8
CVE-2000-0313
–
0%
Mar 12
Vulnerability in OpenBSD 2.6 allows a local user to change interface media configurations
Affected: 2.6
CVE-2000-0312
–
1%
Mar 12
cron in OpenBSD 2.5 allows local users to gain root privileges via an argv[] that is not NULL terminated, which is passed to cron's fake popen function
Affected: 2.5
CVE-2000-0310
–
1%
Mar 12
IP fragment assembly in OpenBSD 2.4 allows a remote attacker to cause a denial of service by sending a large number of fragmented packets
Affected: 2.4
CVE-2000-0309
–
0%
Mar 12
The i386 trace-trap handling in OpenBSD 2.4 with DDB enabled allows a local user to cause a denial of service
Affected: 2.4
CVE-2001-0053
–
18%
Feb 12
One-byte buffer overflow in replydirname function in BSD-based ftpd allows remote attackers to gain root privileges
Affected: 2.4; 2.5; 2.6; 2.7; 2.8
CVE-2000-0997
–
1%
Dec 19
Format string vulnerabilities in eeprom program in OpenBSD, NetBSD, and possibly other operating systems allows local attackers to gain root privileges
Affected: 2.3; 2.4; 2.5; 2.6; 2.7
CVE-2000-0996
–
1%
Dec 19
Format string vulnerability in OpenBSD su program (and possibly other BSD-based operating systems) allows local attackers to gain root privileges via a malformed shell
Affected: All versions, or not specified
CVE-2000-0995
–
1%
Dec 19
Format string vulnerability in OpenBSD yp_passwd program (and possibly other BSD-based operating systems) allows attackers to gain root privileges a malformed name
Affected: All versions, or not specified
CVE-2000-0994
–
1%
Dec 19
Format string vulnerability in OpenBSD fstat program (and possibly other BSD-based operating systems) allows local users to gain root privileges via the PWD environmental variable
Affected: 2.3; 2.4; 2.5; 2.6; 2.7
CVE-2000-0993
–
2%
Dec 19
Format string vulnerability in pw_error function in BSD libutil library allows local users to gain root privileges via a malformed password in commands such as chpass or passwd
Affected: 2.3; 2.4; 2.5; 2.6; 2.7
CVE-2000-0962
–
2%
Dec 19
The IPSEC implementation in OpenBSD 2.7 does not properly handle empty AH/ESP packets, which allows remote attackers to cause a denial of service
Affected: 2.7
CVE-2000-0914
–
3%
Dec 19
OpenBSD 2.6 and earlier allows remote attackers to cause a denial of service by flooding the server with ARP requests
Affected: 2.0; 2.1; 2.2; 2.3; 2.4; 2.5; +1 more
CVE-2000-1010
–
5%
Dec 11
Format string vulnerability in talkd in OpenBSD and possibly other BSD-based OSes allows remote attackers to execute arbitrary commands via a user name that contains format…
Affected: 2.3; 2.4; 2.5; 2.6; 2.7
CVE-2000-1004
–
0%
Dec 11
Format string vulnerability in OpenBSD photurisd allows local users to execute arbitrary commands via a configuration file directory name that contains formatting characters
Affected: 2.3; 2.4; 2.5; 2.6; 2.7
CVE-2000-0751
–
4%
Oct 20
mopd (Maintenance Operations Protocol loader daemon) does not properly cleanse user-injected format strings, which allows remote attackers to execute arbitrary commands
Affected: 2.4; 2.5; 2.6; 2.7
CVE-2000-0750
–
2%
Oct 20
Buffer overflow in mopd (Maintenance Operations Protocol loader daemon) allows remote attackers to execute arbitrary commands via a long file name
Affected: 2.4; 2.5; 2.6; 2.7
CVE-2000-0092
–
0%
Jan 19
The BSD make program allows local users to modify files via a symlink attack when the -j option is being used
Affected: 2.6
CVE-1999-0001
–
5%
Dec 30
ip_input.c in BSD-derived TCP/IP implementations allows remote attackers to cause a denial of service (crash or hang) via crafted packets
Affected: 2.3; 2.4
CVE-2000-0489
–
1%
Sep 5
FreeBSD, NetBSD, and OpenBSD allow an attacker to cause a denial of service by creating a large number of socket pairs using the socketpair function, setting a large buffer size…
Affected: 2.5; 2.6; 2.7
CVE-1999-0724
–
0%
Aug 12
Buffer overflow in OpenBSD procfs and fdescfs file systems via uio_offset in the readdir() function
Affected: 2.5
CVE-1999-0674
–
1%
Aug 9
The BSD profil system call allows a local user to modify the internal data space of a program via profiling and execve
Affected: 2.0; 2.1; 2.2; 2.3; 2.4; 2.5
CVE-1999-0727
–
1%
Aug 6
A kernel leak in the OpenBSD kernel allows IPsec packets to be sent unencrypted
Affected: 2.5
CVE-1999-0703
–
0%
Aug 3
OpenBSD, BSDI, and other Unix operating systems allow users to set chflags and fchflags on character and block devices
Affected: 2.5
CVE-1999-0481
–
1%
Mar 22
Denial of service in "poll" in OpenBSD
Affected: 2.4
CVE-1999-0482
–
1%
Mar 21
OpenBSD kernel crash through TSS handling, as caused by the crashme program
Affected: All versions, or not specified
CVE-1999-0483
–
0%
Feb 25
OpenBSD crash using nlink value in FFS and EXT2FS filesystems
Affected: All versions, or not specified
CVE-1999-0484
–
0%
Feb 23
Buffer overflow in OpenBSD ping
Affected: All versions, or not specified
CVE-1999-0485
–
1%
Feb 19
Remote attackers can cause a system crash through ipintr() in ipq in OpenBSD
Affected: 2.4
CVE-1999-0396
–
1%
Feb 17
A race condition between the select() and accept() calls in NetBSD TCP servers allows remote attackers to cause a denial of service
Affected: 2.4
CVE-1999-0798
–
2%
Dec 4
Buffer overflow in bootpd on OpenBSD, FreeBSD, and Linux systems via a malformed header type
Affected: 2.3; 2.4
CVE-1999-0062
–
1%
Aug 3
The chpass command in OpenBSD allows a local user to gain root access through file descriptor leakage
Affected: 2.3
CVE-1999-0303
–
0%
May 21
Buffer overflow in BNU UUCP daemon (uucpd) through long hostnames
Affected: 2.1; 2.2
CVE-1999-0323
–
1%
Feb 20
FreeBSD mmap function allows users to modify append-only or immutable files
Affected: 2.2
CVE-1999-0305
–
1%
Feb 1
The system configuration control (sysctl) facility in BSD based operating systems OpenBSD 2.2 and earlier, and FreeBSD 2.2.5 and earlier, does not properly restrict source routed…
Affected: 2.0; 2.1; 2.2
CVE-1999-0304
–
0%
Feb 1
mmap function in BSD allows local attackers in the kmem group to modify memory through devices
Affected: 2.2
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