彙總 OpenBSD 相關全部產品的 CVE 與安全漏洞情報，包括 CVSS、EPSS、公開時間與漏洞情報資料。
常見弱點模式包括 緩衝區溢位、記憶體損壞、輸入驗證問題與路徑處理缺陷，在 軟體部署與生產負載 使用場景中可能帶來 應用程式崩潰、記憶體損壞與異常行為 等風險。
相關漏洞資料主要來源於公開漏洞披露與安全公告，可用於評估歷史漏洞暴露面與修補優先順序。
| CVE | 摘要 | 來源 | 最高 CVSS | EPSS % | 公開時間 | 更新時間 |
|---|---|---|---|---|---|---|
| CVE-2026-57589 | 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(). | [email protected] | 7.4 | 0.12% | 2026-06-24 | 2026-06-26 |
| CVE-2026-55655 | A flaw was found in OpenSSH. A local unprivileged attacker on a Linux client host can hijack client-side X11 forwarding connections. This is possible by pre-binding the preferred abstract X socket name when X11 forwarding is enabled and a local UNIX-domain X socket is used. A successful attack can compromise the confidentiality of forwarded X11 traffic, including sensitive window contents and input, and may allow some manipulation of the forwarded session. | [email protected] | 5.0 | 0.09% | 2026-06-23 | 2026-06-25 |
| CVE-2026-55654 | A flaw was found in OpenSSH. This vulnerability, a heap out-of-bounds read, occurs during the cleanup of GSSAPI (Generic Security Service Application Programming Interface) indicators when a trailing NULL termination is missing in the auth-indicators array. A remote attacker, under specific configurations involving GSSAPI authentication and a Kerberos environment, could exploit this to cause the SSH authentication path to crash or abort. This leads to a denial of service (DoS), impacting the ava | [email protected] | 3.7 | 0.33% | 2026-06-23 | 2026-06-25 |
| CVE-2026-55653 | A flaw was found in OpenSSH. A malicious SSH server can exploit a double free vulnerability in the Diffie-Hellman Group Exchange (DH-GEX) client path. This occurs during FIPS (Federal Information Processing Standards) mode known-group validation when the client processes attacker-controlled DH-GEX group parameters. Successful exploitation leads to client-side process termination, resulting in a Denial of Service (DoS). | [email protected] | 4.3 | 0.20% | 2026-06-23 | 2026-06-25 |
| CVE-2026-56099 | 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. | [email protected] | 6.9 | 0.36% | 2026-06-18 | 2026-06-27 |
| CVE-2026-55706 | sppp_pap_input in sys/net/if_spppsubr.c in OpenBSD before 076e2b1 allows authentication bypass via certain zero values for lengths. | [email protected] | 5.8 | 0.21% | 2026-06-17 | 2026-06-17 |
| CVE-2026-41285 | 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. | [email protected] | 4.3 | 0.21% | 2026-04-20 | 2026-06-17 |
| CVE-2026-35414 | 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. | [email protected] | 4.2 | 0.18% | 2026-04-02 | 2026-06-17 |
| CVE-2026-35388 | OpenSSH before 10.3 omits connection multiplexing confirmation for proxy-mode multiplexing sessions. | [email protected] | 2.5 | 0.13% | 2026-04-02 | 2026-06-17 |
| CVE-2026-35387 | 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. | [email protected] | 3.1 | 0.24% | 2026-04-02 | 2026-06-17 |
| CVE-2026-35386 | 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. | [email protected] | 3.6 | 0.25% | 2026-04-02 | 2026-06-17 |
| CVE-2026-35385 | 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). | [email protected] | 7.5 | 0.42% | 2026-04-02 | 2026-07-02 |
| CVE-2026-3497 | Vulnerability in the OpenSSH GSSAPI delta included in various Linux distributions. This vulnerability affects the GSSAPI patches added by various Linux distributions and does not affect the OpenSSH upstream project itself. The usage of sshpkt_disconnect() on an error, which does not terminate the process, allows an attacker to send an unexpected GSSAPI message type during the GSSAPI key exchange to the server, which will call the underlying function and continue the execution of the program with | [email protected] | 6.9 | 2.18% | 2026-03-12 | 2026-06-29 |
| CVE-2025-61985 | ssh in OpenSSH before 10.1 allows the '\0' character in an ssh:// URI, potentially leading to code execution when a ProxyCommand is used. | [email protected] | 3.6 | 0.06% | 2025-10-06 | 2026-06-17 |
| CVE-2025-61984 | 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.) | [email protected] | 3.6 | 0.22% | 2025-10-06 | 2026-06-17 |
| CVE-2025-32728 | In sshd in OpenSSH before 10.0, the DisableForwarding directive does not adhere to the documentation stating that it disables X11 and agent forwarding. | [email protected] | 4.3 | 0.16% | 2025-04-09 | 2026-06-17 |
| CVE-2025-30334 | In OpenBSD 7.6 before errata 006 and OpenBSD 7.5 before errata 015, traffic sent over wg(4) could result in kernel crash. | 9119a7d8-5eab-497f-8521-727c672e3725 | 7.1 | 0.37% | 2025-03-20 | 2026-06-17 |
| CVE-2025-26466 | A flaw was found in the OpenSSH package. For each ping packet the SSH server receives, a pong packet is allocated in a memory buffer and stored in a queue of packages. It is only freed when the server/client key exchange has finished. A malicious client may keep sending such packages, leading to an uncontrolled increase in memory consumption on the server side. Consequently, the server may become unavailable, resulting in a denial of service attack. | [email protected] | 5.9 | 38.47% | 2025-02-28 | 2026-06-29 |
| CVE-2025-26465 | A vulnerability was found in OpenSSH when the VerifyHostKeyDNS option is enabled. A machine-in-the-middle attack can be performed by a malicious machine impersonating a legit server. This issue occurs due to how OpenSSH mishandles error codes in specific conditions when verifying the host key. For an attack to be considered successful, the attacker needs to manage to exhaust the client's memory resource first, turning the attack complexity high. | [email protected] | 6.8 | 7.00% | 2025-02-18 | 2026-06-17 |
| CVE-2024-11149 | In OpenBSD 7.4 before errata 014, vmm(4) did not restore GDTR limits properly on Intel (VMX) CPUs. | 9119a7d8-5eab-497f-8521-727c672e3725 | 6.2 | 0.12% | 2024-12-05 | 2026-06-17 |