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33 vulnerabilities found for by openbsd
CVE-2026-73283 (GCVE-0-2026-73283)
Vulnerability from cvelistv5
Published
2026-08-11 19:15
Modified
2026-08-11 20:16
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-670 - Always-Incorrect Control Flow Implementation
Summary
In sshd in OpenSSH before 10.5, the restrict keyword (in authorized_keys) was supposed to be applicable to tunnel forwarding but was not.
References
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CVE-2026-73282 (GCVE-0-2026-73282)
Vulnerability from cvelistv5
Published
2026-08-11 19:12
Modified
2026-08-11 20:17
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-416 - Use After Free
Summary
In ssh in OpenSSH before 10.5, a use-after-free for realloc data can occur if a certain pair of remote-forwarding operations are concurrent.
References
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CVE-2026-73281 (GCVE-0-2026-73281)
Vulnerability from cvelistv5
Published
2026-08-11 19:10
Modified
2026-08-11 20:16
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-669 - Incorrect Resource Transfer Between Spheres
Summary
In ssh-agent in OpenSSH before 10.5, some operations can occur remotely but were intended to occur only locally, including operations that add tokens or use keys. This is caused by misinteraction between agent locking and the session-bind@openssh.com extension.
References
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CVE-2026-60002 (GCVE-0-2026-60002)
Vulnerability from cvelistv5
Published
2026-07-08 00:17
Modified
2026-07-08 13:02
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-416 - Use After Free
Summary
ssh in OpenSSH before 10.4 can have a use-after-free when a server changes its host key during a key re-exchange. (This outcome occurs only on the client side.)
References
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CVE-2026-60001 (GCVE-0-2026-60001)
Vulnerability from cvelistv5
Published
2026-07-08 00:16
Modified
2026-07-08 13:03
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-770 - Allocation of Resources Without Limits or Throttling
Summary
sshd in OpenSSH before 10.4 does not always honor the minimum authentication delay.
References
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CVE-2026-60000 (GCVE-0-2026-60000)
Vulnerability from cvelistv5
Published
2026-07-08 00:14
Modified
2026-07-08 13:06
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-770 - Allocation of Resources Without Limits or Throttling
Summary
sshd in OpenSSH before 10.4 allows remote attackers to cause a denial of service (resource consumption from excessive authentication attempts) because MaxAuthTries was mishandled for GSSAPIAuthentication.
References
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CVE-2026-59999 (GCVE-0-2026-59999)
Vulnerability from cvelistv5
Published
2026-07-08 00:13
Modified
2026-07-08 13:07
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-348 - Use of Less Trusted Source
Summary
In sshd in OpenSSH before 10.4, DisableForwarding=yes was supposed to take precedence over PermitTunnel=yes, but did not.
References
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CVE-2026-59998 (GCVE-0-2026-59998)
Vulnerability from cvelistv5
Published
2026-07-08 00:11
Modified
2026-07-08 13:48
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-573 - Improper Following of Specification by Caller
Summary
sshd in OpenSSH before 10.4 has an undocumented security-relevant behavior: GSSAPIStrictAcceptorCheck has no value if the server is in Windows Active Directory.
References
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CVE-2026-59997 (GCVE-0-2026-59997)
Vulnerability from cvelistv5
Published
2026-07-08 00:09
Modified
2026-07-08 12:52
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-1284 - Improper Validation of Specified Quantity in Input
Summary
internal-sftp in sshd in OpenSSH before 10.4 recognizes only the first 9 command-line arguments, which can be important if a later command-line argument would have helped to ensure the intended security properties of an SFTP connection.
References
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CVE-2026-59996 (GCVE-0-2026-59996)
Vulnerability from cvelistv5
Published
2026-07-08 00:07
Modified
2026-07-08 13:03
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-23 - Relative Path Traversal
Summary
scp in OpenSSH before 10.4 may place a file in the parent directory of an intended directory when the copy occurs between two remote destinations.
References
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CVE-2026-59995 (GCVE-0-2026-59995)
Vulnerability from cvelistv5
Published
2026-07-08 00:04
Modified
2026-07-08 12:52
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-23 - Relative Path Traversal
Summary
sftp in OpenSSH before 10.4 does not properly constrain the location of downloaded files when "sftp server:/path ." is used with an attacker-controlled server.
References
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CVE-2026-57589 (GCVE-0-2026-57589)
Vulnerability from cvelistv5
Published
2026-06-25 00:33
Modified
2026-06-26 03:55
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-416 - Use After Free
Summary
sys/kern/sysv_sem.c in OpenBSD through 7.9 has a use-after-free allowing local privilege escalation to root. This is a context switch use-after-free after tsleep in sys_semget().
References
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CVE-2026-56099 (GCVE-0-2026-56099)
Vulnerability from cvelistv5
Published
2026-06-18 19:29
Modified
2026-07-14 21:33
Severity ?
6.9 (Medium) - CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N
5.3 (Medium) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
5.3 (Medium) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
VLAI Severity ?
EPSS score ?
CWE
- CWE-125 - Out-of-bounds Read
Summary
OpenBSD before commit 6a23123 (2026-06-18) contains an out-of-bounds read vulnerability in the mpls_do_error function within sys/netmpls/mpls_input.c that allows remote attackers to disclose kernel stack memory by sending crafted MPLS frames with 16 labels and no Bottom-of-Stack bit set.
References
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CVE-2026-55706 (GCVE-0-2026-55706)
Vulnerability from cvelistv5
Published
2026-06-17 00:53
Modified
2026-06-17 14:33
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-1284 - Improper Validation of Specified Quantity in Input
Summary
sppp_pap_input in sys/net/if_spppsubr.c in OpenBSD before 076e2b1 allows authentication bypass via certain zero values for lengths.
References
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CVE-2026-41285 (GCVE-0-2026-41285)
Vulnerability from cvelistv5
Published
2026-04-20 00:00
Modified
2026-04-21 13:27
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-1284 - Improper Validation of Specified Quantity in Input
Summary
In OpenBSD through 7.8, the slaacd and rad daemons have an infinite loop when they receive a crafted ICMPv6 Neighbor Discovery (ND) option (over a local network) with length zero, because of an "nd_opt_len * 8 - 2" expression with no preceding check for whether nd_opt_len is zero.
References
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CVE-2026-35414 (GCVE-0-2026-35414)
Vulnerability from cvelistv5
Published
2026-04-02 17:08
Modified
2026-04-02 18:17
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-670 - Always-Incorrect Control Flow Implementation
Summary
OpenSSH before 10.3 mishandles the authorized_keys principals option in uncommon scenarios involving a principals list in conjunction with a Certificate Authority that makes certain use of comma characters.
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CVE-2026-35388 (GCVE-0-2026-35388)
Vulnerability from cvelistv5
Published
2026-04-02 16:57
Modified
2026-04-02 18:16
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-420 - Unprotected Alternate Channel
Summary
OpenSSH before 10.3 omits connection multiplexing confirmation for proxy-mode multiplexing sessions.
References
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CVE-2026-35387 (GCVE-0-2026-35387)
Vulnerability from cvelistv5
Published
2026-04-02 16:52
Modified
2026-04-03 13:07
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-670 - Always-Incorrect Control Flow Implementation
Summary
OpenSSH before 10.3 can use unintended ECDSA algorithms. Listing of any ECDSA algorithm in PubkeyAcceptedAlgorithms or HostbasedAcceptedAlgorithms is misinterpreted to mean all ECDSA algorithms.
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CVE-2026-35386 (GCVE-0-2026-35386)
Vulnerability from cvelistv5
Published
2026-04-02 16:44
Modified
2026-04-03 03:55
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-696 - Incorrect Behavior Order
Summary
In OpenSSH before 10.3, command execution can occur via shell metacharacters in a username within a command line. This requires a scenario where the username on the command line is untrusted, and also requires a non-default configurations of % in ssh_config.
References
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CVE-2026-35385 (GCVE-0-2026-35385)
Vulnerability from cvelistv5
Published
2026-04-02 16:30
Modified
2026-08-25 12:05
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-281 - Improper Preservation of Permissions
Summary
In OpenSSH before 10.3, a file downloaded by scp may be installed setuid or setgid, an outcome contrary to some users' expectations, if the download is performed as root with -O (legacy scp protocol) and without -p (preserve mode).
References
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CVE-2025-61985 (GCVE-0-2025-61985)
Vulnerability from cvelistv5
Published
2025-10-06 00:00
Modified
2026-07-14 12:43
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-158 - Improper Neutralization of Null Byte or NUL Character
Summary
ssh in OpenSSH before 10.1 allows the '\0' character in an ssh:// URI, potentially leading to code execution when a ProxyCommand is used.
References
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CVE-2025-61984 (GCVE-0-2025-61984)
Vulnerability from cvelistv5
Published
2025-10-06 00:00
Modified
2026-07-14 12:43
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-159 - Improper Handling of Invalid Use of Special Elements
Summary
ssh in OpenSSH before 10.1 allows control characters in usernames that originate from certain possibly untrusted sources, potentially leading to code execution when a ProxyCommand is used. The untrusted sources are the command line and %-sequence expansion of a configuration file. (A configuration file that provides a complete literal username is not categorized as an untrusted source.)
References
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CVE-2025-32728 (GCVE-0-2025-32728)
Vulnerability from cvelistv5
Published
2025-04-10 00:00
Modified
2025-05-08 13:11
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-440 - Expected Behavior Violation
Summary
In sshd in OpenSSH before 10.0, the DisableForwarding directive does not adhere to the documentation stating that it disables X11 and agent forwarding.
References
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CVE-2025-30334 (GCVE-0-2025-30334)
Vulnerability from cvelistv5
Published
2025-03-20 20:39
Modified
2025-03-21 15:22
Severity ?
6.5 (Medium) - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
7.1 (High) - CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
7.1 (High) - CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
VLAI Severity ?
EPSS score ?
CWE
- CWE-131 - Incorrect Calculation of Buffer Size
Summary
In OpenBSD 7.6 before errata 006 and OpenBSD 7.5 before errata 015, traffic sent over wg(4) could result in kernel crash.
References
Impacted products
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CVE-2024-11149 (GCVE-0-2024-11149)
Vulnerability from cvelistv5
Published
2024-12-06 01:56
Modified
2024-12-06 16:41
Severity ?
6.2 (Medium) - CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:N/SC:L/SI:L/SA:H/AU:N
7.9 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:H
7.9 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:H
VLAI Severity ?
EPSS score ?
Summary
In OpenBSD 7.4 before errata 014, vmm(4) did not restore GDTR limits properly on Intel (VMX) CPUs.
References
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CVE-2024-10933 (GCVE-0-2024-10933)
Vulnerability from cvelistv5
Published
2024-12-05 20:06
Modified
2024-12-05 20:40
Severity ?
4.1 (Medium) - CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:A/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
5.0 (Medium) - CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:N/A:N
5.0 (Medium) - CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:N/A:N
VLAI Severity ?
EPSS score ?
CWE
- CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
Summary
In OpenBSD 7.5 before errata 009 and OpenBSD 7.4 before errata 022, exclude any '/' in readdir name validation to avoid unexpected directory traversal on untrusted file systems.
References
Impacted products
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CVE-2024-11148 (GCVE-0-2024-11148)
Vulnerability from cvelistv5
Published
2024-12-05 19:50
Modified
2024-12-06 18:58
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-476 - NULL Pointer Dereference
Summary
In OpenBSD 7.4 before errata 006 and OpenBSD 7.3 before errata 020, httpd(8) is vulnerable to a NULL dereference when handling a malformed fastcgi request.
References
Impacted products
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CVE-2024-10934 (GCVE-0-2024-10934)
Vulnerability from cvelistv5
Published
2024-11-15 19:20
Modified
2025-10-02 14:09
Severity ?
9.8 (Critical) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
9.2 (Critical) - CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/AU:Y
9.2 (Critical) - CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/AU:Y
VLAI Severity ?
EPSS score ?
Summary
In OpenBSD 7.5 before errata 008 and OpenBSD 7.4 before errata 021,
avoid possible mbuf double free in NFS client and server implementation, do not use uninitialized variable in error handling of NFS server.
References
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CVE-2021-35000 (GCVE-0-2021-35000)
Vulnerability from cvelistv5
Published
2024-05-07 22:54
Modified
2024-09-18 18:27
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-908 - Use of Uninitialized Resource
Summary
OpenBSD Kernel Multicast Routing Uninitialized Memory Information Disclosure Vulnerability. This vulnerability allows local attackers to disclose sensitive information on affected installations of OpenBSD Kernel. An attacker must first obtain the ability to execute low-privileged code on the target system in order to exploit this vulnerability.
The specific flaw exists within the implementation of multicast routing. The issue results from the lack of proper initialization of memory prior to accessing it. An attacker can leverage this in conjunction with other vulnerabilities to escalate privileges and execute arbitrary code in the context of the kernel.
. Was ZDI-CAN-16112.
References
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CVE-2021-34999 (GCVE-0-2021-34999)
Vulnerability from cvelistv5
Published
2024-05-07 22:54
Modified
2024-09-18 18:19
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-908 - Use of Uninitialized Resource
Summary
OpenBSD Kernel Multicast Routing Uninitialized Memory Information Disclosure Vulnerability. This vulnerability allows local attackers to disclose sensitive information on affected installations of OpenBSD Kernel. An attacker must first obtain the ability to execute low-privileged code on the target system in order to exploit this vulnerability.
The specific flaw exists within the implementation of multicast routing. The issue results from the lack of proper initialization of memory prior to accessing it. An attacker can leverage this in conjunction with other vulnerabilities to escalate privileges and execute arbitrary code in the context of the kernel.
. Was ZDI-CAN-14540.
References
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"dateUpdated": "2024-08-21T21:11:13.017Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"defaultStatus": "unknown",
"product": "Kernel",
"vendor": "OpenBSD",
"versions": [
{
"status": "affected",
"version": "OpenBSD 6.9"
}
]
}
],
"dateAssigned": "2021-06-30T13:56:51.762Z",
"datePublic": "2022-01-13T13:45:04.504Z",
"descriptions": [
{
"lang": "en",
"value": "OpenBSD Kernel Multicast Routing Uninitialized Memory Information Disclosure Vulnerability. This vulnerability allows local attackers to disclose sensitive information on affected installations of OpenBSD Kernel. An attacker must first obtain the ability to execute low-privileged code on the target system in order to exploit this vulnerability.\n\nThe specific flaw exists within the implementation of multicast routing. The issue results from the lack of proper initialization of memory prior to accessing it. An attacker can leverage this in conjunction with other vulnerabilities to escalate privileges and execute arbitrary code in the context of the kernel.\n. Was ZDI-CAN-14540."
}
],
"metrics": [
{
"cvssV3_0": {
"baseScore": 3.8,
"baseSeverity": "LOW",
"vectorString": "CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:N",
"version": "3.0"
},
"format": "CVSS"
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-908",
"description": "CWE-908: Use of Uninitialized Resource",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2024-09-18T18:19:31.677Z",
"orgId": "99f1926a-a320-47d8-bbb5-42feb611262e",
"shortName": "zdi"
},
"references": [
{
"name": "ZDI-22-073",
"tags": [
"x_research-advisory"
],
"url": "https://www.zerodayinitiative.com/advisories/ZDI-22-073/"
}
],
"source": {
"lang": "en",
"value": "Reno Robert of Trend Micro Zero Day Initiative"
},
"title": "OpenBSD Kernel Multicast Routing Uninitialized Memory Information Disclosure Vulnerability"
}
},
"cveMetadata": {
"assignerOrgId": "99f1926a-a320-47d8-bbb5-42feb611262e",
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"cveId": "CVE-2021-34999",
"datePublished": "2024-05-07T22:54:51.785Z",
"dateReserved": "2021-06-17T19:27:05.669Z",
"dateUpdated": "2024-09-18T18:19:31.677Z",
"state": "PUBLISHED"
},
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}