Vulnerabilities (CVE)

Filtered by vendor Openbsd Subscribe
Total 367 CVE
CVE Vendors Products Updated CVSS v2 CVSS v3
CVE-2025-30334 1 Openbsd 1 Openbsd 2026-06-17 N/A 6.5 MEDIUM
In OpenBSD 7.6 before errata 006 and OpenBSD 7.5 before errata 015, traffic sent over wg(4) could result in kernel crash.
CVE-2024-29937 2 Freebsd, Openbsd 2 Freebsd, Openbsd 2026-06-17 N/A 9.8 CRITICAL
NFS in a BSD derived codebase, as used in OpenBSD through 7.4 and FreeBSD through 14.0-RELEASE, allows remote attackers to execute arbitrary code via a bug that is unrelated to memory corruption.
CVE-2024-11149 1 Openbsd 1 Openbsd 2026-06-17 N/A 7.9 HIGH
In OpenBSD 7.4 before errata 014, vmm(4) did not restore GDTR limits properly on Intel (VMX) CPUs.
CVE-2024-11148 1 Openbsd 1 Openbsd 2026-06-17 N/A 7.5 HIGH
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.
CVE-2024-10934 1 Openbsd 1 Openbsd 2026-06-17 N/A 9.8 CRITICAL
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.
CVE-2024-10933 1 Openbsd 1 Openbsd 2026-06-17 N/A 5.0 MEDIUM
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.
CVE-2023-52558 1 Openbsd 1 Openbsd 2026-06-17 N/A 7.5 HIGH
In OpenBSD 7.4 before errata 002 and OpenBSD 7.3 before errata 019, a network buffer that had to be split at certain length that could crash the kernel after receiving specially crafted escape sequences.
CVE-2023-52557 1 Openbsd 1 Openbsd 2026-06-17 N/A 7.5 HIGH
In OpenBSD 7.3 before errata 016, npppd(8) could crash by a l2tp message which has an AVP (Attribute-Value Pair) with wrong length.
CVE-2023-52556 1 Openbsd 1 Openbsd 2026-06-17 N/A 6.2 MEDIUM
In OpenBSD 7.4 before errata 009, a race condition between pf(4)'s processing of packets and expiration of packet states may cause a kernel panic.
CVE-2023-40216 1 Openbsd 1 Openbsd 2026-06-17 N/A 5.5 MEDIUM
OpenBSD 7.3 before errata 014 is missing an argument-count bounds check in console terminal emulation. This could cause incorrect memory access and a kernel crash after receiving crafted DCS or CSI terminal escape sequences.
CVE-2023-38283 2 Openbgpd, Openbsd 2 Openbgpd, Openbsd 2026-06-17 N/A 5.3 MEDIUM
In OpenBGPD before 8.1, incorrect handling of BGP update data (length of path attributes) set by a potentially distant remote actor may cause the system to incorrectly reset a session. This is fixed in OpenBSD 7.3 errata 006.
CVE-2023-35784 1 Openbsd 2 Libressl, Openbsd 2026-06-17 N/A 9.8 CRITICAL
A double free or use after free could occur after SSL_clear in OpenBSD 7.2 before errata 026 and 7.3 before errata 004, and in LibreSSL before 3.6.3 and 3.7.x before 3.7.3. NOTE: OpenSSL is not affected.
CVE-2023-29323 2 Openbsd, Opensmtpd 2 Openbsd, Opensmtpd 2026-06-17 N/A 7.8 HIGH
ascii_load_sockaddr in smtpd in OpenBSD before 7.1 errata 024 and 7.2 before errata 020, and OpenSMTPD Portable before 7.0.0-portable commit f748277, can abort upon a connection from a local, scoped IPv6 address.
CVE-2023-27567 1 Openbsd 1 Openbsd 2026-06-17 N/A 7.5 HIGH
In OpenBSD 7.2, a TCP packet with destination port 0 that matches a pf divert-to rule can crash the kernel.
CVE-2022-48437 1 Openbsd 2 Libressl, Openbsd 2026-06-17 N/A 5.3 MEDIUM
An issue was discovered in x509/x509_verify.c in LibreSSL before 3.6.1, and in OpenBSD before 7.2 errata 001. x509_verify_ctx_add_chain does not store errors that occur during leaf certificate verification, and therefore an incorrect error is returned. This behavior occurs when there is an installed verification callback that instructs the verifier to continue upon detecting an invalid certificate.
CVE-2022-27882 1 Openbsd 1 Openbsd 2026-06-17 5.0 MEDIUM 7.5 HIGH
slaacd in OpenBSD 6.9 and 7.0 before 2022-03-22 has an integer signedness error and resultant heap-based buffer overflow triggerable by a crafted IPv6 router advertisement. NOTE: privilege separation and pledge can prevent exploitation.
CVE-2022-27881 1 Openbsd 1 Openbsd 2026-06-17 5.0 MEDIUM 7.5 HIGH
engine.c in slaacd in OpenBSD 6.9 and 7.0 before 2022-02-21 has a buffer overflow triggerable by an IPv6 router advertisement with more than seven nameservers. NOTE: privilege separation and pledge can prevent exploitation.
CVE-2021-46880 1 Openbsd 2 Libressl, Openbsd 2026-06-17 N/A 9.8 CRITICAL
x509/x509_verify.c in LibreSSL before 3.4.2, and OpenBSD before 7.0 errata 006, allows authentication bypass because an error for an unverified certificate chain is sometimes discarded.
CVE-2021-41581 1 Openbsd 1 Libressl 2026-06-17 4.3 MEDIUM 5.5 MEDIUM
x509_constraints_parse_mailbox in lib/libcrypto/x509/x509_constraints.c in LibreSSL through 3.4.0 has a stack-based buffer over-read. When the input exceeds DOMAIN_PART_MAX_LEN, the buffer lacks '\0' termination.
CVE-2021-36368 2 Debian, Openbsd 2 Debian Linux, Openssh 2026-06-17 2.6 LOW 3.7 LOW
An issue was discovered in OpenSSH before 8.9. If a client is using public-key authentication with agent forwarding but without -oLogLevel=verbose, and an attacker has silently modified the server to support the None authentication option, then the user cannot determine whether FIDO authentication is going to confirm that the user wishes to connect to that server, or that the user wishes to allow that server to connect to a different server on the user's behalf. NOTE: the vendor's position is "this is not an authentication bypass, since nothing is being bypassed.