Vulnerabilities (CVE)

Filtered by vendor Samba Subscribe
Total 266 CVE
CVE Vendors Products Updated CVSS v2 CVSS v3
CVE-2026-70455 1 Samba 1 Rsync 2026-08-31 N/A 7.5 HIGH
rsync 3.4.2 before 3.5.0 contains a denial of service vulnerability that allows a remote sender to exhaust system resources by specifying the --zt short alias for --compress-threads, which bypasses the refuse options directive's string matching on long option names. Attackers can specify --zt=N with a large value to spawn an unbounded number of Zstandard worker threads on the receiver, exhausting available thread and memory resources.
CVE-2026-70457 1 Samba 1 Rsync 2026-08-31 N/A 6.5 MEDIUM
rsync 3.2.3 before 3.5.0 contains an out-of-bounds write in parse_size_arg() where the return value of snprintf() is used directly as an index into a .bss-segment array without bounds checking. When snprintf truncates the formatted size string, the return value equals the number of characters that would have been written including the truncated portion, and this value may exceed the array length. The subsequent indexed write targets memory outside the intended array bounds, corrupting .bss memory.
CVE-2026-70459 1 Samba 1 Rsync 2026-08-31 N/A 5.3 MEDIUM
rsync 3.0.0 before 3.5.0 contains a null pointer dereference vulnerability in the daemon child process that allows remote attackers to crash the daemon by sending a file list whose first entry is a dot entry not typed as a directory. The daemon dereferences the first file list entry as a directory structure pointer without verifying the entry type, resulting in an invalid or uninitialized pointer dereference that terminates the client connection.
CVE-2026-70461 1 Samba 1 Rsync 2026-08-31 N/A 8.2 HIGH
rsync 3.2.5 before 3.5.0 contains a heap out-of-bounds write vulnerability that allows remote unauthenticated attackers to write one attacker-controlled byte past the end of a heap allocation by supplying a crafted files-from entry. Attackers can trigger the vulnerability against a read-only rsync daemon module by providing a files-from entry containing both an interior and trailing backslash, causing the add_implied_include() function to under-count the trailing backslash when sizing the destination buffer.
CVE-2026-70463 1 Samba 1 Rsync 2026-08-31 N/A 8.1 HIGH
rsync 3.1.0 before 3.5.0 contains an authorization bypass in auth users directive parsing. The auth users parser uses comma-only tokenization when splitting the user list, which fails to correctly handle entries of the form @Group Name where the group name contains a space. The space within the group name causes the parser to split the entry at the space boundary, discarding the deny rule associated with the group. An authenticated user whose username or group membership would be denied by an @Group Name auth users entry can connect to a restricted module because the deny rule is silently discarded during parsing.
CVE-2026-58224 2 Redhat, Samba 2 Enterprise Linux, Samba 2026-08-31 N/A 6.5 MEDIUM
A flaw was found in Samba's CTDB, the clustered database service used by Samba. Insufficient integrity validation of received CTDB protocol packets allows malformed packets containing invalid field lengths, improperly terminated strings, or inconsistent packet sizes to be processed without adequate bounds checking. A remote attacker with access to the CTDB private network may trigger a denial of service through process crashes or excessive memory consumption and, in limited cases, disclose adjacent memory contents.
CVE-2025-0620 1 Samba 1 Samba 2026-08-31 N/A 4.9 MEDIUM
A flaw was found in Samba. The smbd service daemon does not pick up group membership changes when re-authenticating an expired SMB session. This issue can expose file shares until clients disconnect and then connect again.
CVE-2024-12086 8 Almalinux, Archlinux, Gentoo and 5 more 9 Almalinux, Arch Linux, Linux and 6 more 2026-08-21 N/A 6.1 MEDIUM
A flaw was found in rsync. It could allow a server to enumerate the contents of an arbitrary file from the client's machine. This issue occurs when files are being copied from a client to a server. During this process, the rsync server will send checksums of local data to the client to compare with in order to determine what data needs to be sent to the server. By sending specially constructed checksum values for arbitrary files, an attacker may be able to reconstruct the data of those files byte-by-byte based on the responses from the client.
CVE-2026-29518 1 Samba 1 Rsync 2026-08-19 N/A 7.0 HIGH
Rsync versions before 3.4.3 contain a time-of-check to time-of-use (TOCTOU) race condition in daemon file handling that allows attackers to redirect file writes outside intended directories by replacing parent directory components with symbolic links. Attackers with write access to a module path can exploit this race condition to create or overwrite arbitrary files, potentially modifying sensitive system files and achieving privilege escalation when the daemon runs with elevated privileges. This vulnerability can only be triggered if the chroot setting is false.
CVE-2022-38023 4 Fedoraproject, Microsoft, Netapp and 1 more 9 Fedora, Windows Server 2008, Windows Server 2012 and 6 more 2026-08-10 N/A 8.1 HIGH
Netlogon RPC Elevation of Privilege Vulnerability
CVE-2022-37967 4 Fedoraproject, Microsoft, Netapp and 1 more 9 Fedora, Windows Server 2008, Windows Server 2012 and 6 more 2026-08-10 N/A 7.2 HIGH
Windows Kerberos Elevation of Privilege Vulnerability
CVE-2022-37966 4 Fedoraproject, Microsoft, Netapp and 1 more 9 Fedora, Windows Server 2008, Windows Server 2012 and 6 more 2026-08-10 N/A 8.1 HIGH
Windows Kerberos RC4-HMAC Elevation of Privilege Vulnerability
CVE-2026-43620 1 Samba 1 Rsync 2026-07-24 N/A 6.5 MEDIUM
Rsync version 3.4.2 and prior contain a receiver-side out-of-bounds array read vulnerability in recv_files() in receiver.c that allows a malicious rsync server to crash the rsync client process. Attackers can exploit the vulnerability by setting CF_INC_RECURSE in compatibility flags and sending a specially crafted file list where the first sorted entry is not the leading dot directory, followed by a transfer record with ndx=0 and an iflag word without ITEM_TRANSFER, causing the receiver to read 8 bytes before the allocated pointer array and dereference an invalid pointer at an unmapped address, resulting in a deterministic SIGSEGV crash of the rsync client.
CVE-2026-43617 1 Samba 1 Rsync 2026-07-24 N/A 4.8 MEDIUM
Rsync version 3.4.2 and prior contain an authorization bypass vulnerability in the rsync daemon's hostname-based access control list enforcement when configured with chroot. Attackers can bypass hostname-based deny rules by controlling the PTR record for their source IP address, allowing connections from hostnames that administrators intended to deny when reverse DNS resolution fails and defaults to UNKNOWN.
CVE-2026-45232 1 Samba 1 Rsync 2026-07-24 N/A 3.1 LOW
Rsync versions before 3.4.3 contain an off-by-one out-of-bounds stack write vulnerability in the establish_proxy_connection() function in socket.c that allows network attackers to corrupt stack memory by sending a malformed HTTP proxy response. Attackers can exploit this by positioning themselves between the client and proxy or controlling the proxy server to send a response line of 1023 or more bytes without a newline terminator, causing a null byte to be written to an out-of-bounds stack address when the RSYNC_PROXY environment variable is set.
CVE-2026-43619 1 Samba 1 Rsync 2026-07-24 N/A 6.3 MEDIUM
Rsync version 3.4.2 and prior contain symlink race condition vulnerabilities in path-based system calls including chmod, lchown, utimes, rename, unlink, mkdir, symlink, mknod, link, rmdir, and lstat that allow local attackers to redirect operations to files outside the exported rsync module. Attackers with local filesystem access can exploit the timing window between path resolution and syscall execution by swapping symlinks to apply sender-supplied permissions, ownership, timestamps, or filenames to arbitrary files outside the intended module boundary on rsync daemons configured with 'use chroot = no'.
CVE-2024-12088 8 Almalinux, Archlinux, Gentoo and 5 more 20 Almalinux, Arch Linux, Linux and 17 more 2026-06-30 N/A 6.5 MEDIUM
A flaw was found in rsync. When using the `--safe-links` option, the rsync client fails to properly verify if a symbolic link destination sent from the server contains another symbolic link within it. This results in a path traversal vulnerability, which may lead to arbitrary file write outside the desired directory.
CVE-2024-12087 8 Almalinux, Archlinux, Gentoo and 5 more 18 Almalinux, Arch Linux, Linux and 15 more 2026-06-30 N/A 6.5 MEDIUM
A path traversal vulnerability exists in rsync. It stems from behavior enabled by the `--inc-recursive` option, a default-enabled option for many client options and can be enabled by the server even if not explicitly enabled by the client. When using the `--inc-recursive` option, a lack of proper symlink verification coupled with deduplication checks occurring on a per-file-list basis could allow a server to write files outside of the client's intended destination directory. A malicious server could write malicious files to arbitrary locations named after valid directories/paths on the client.
CVE-2024-12084 8 Almalinux, Archlinux, Gentoo and 5 more 8 Almalinux, Arch Linux, Linux and 5 more 2026-06-29 N/A 9.8 CRITICAL
A heap-based buffer overflow flaw was found in the rsync daemon. This issue is due to improper handling of attacker-controlled checksum lengths (s2length) in the code. When MAX_DIGEST_LEN exceeds the fixed SUM_LENGTH (16 bytes), an attacker can write out of bounds in the sum2 buffer.
CVE-2023-5568 1 Samba 1 Samba 2026-06-17 N/A 5.9 MEDIUM
A heap-based Buffer Overflow flaw was discovered in Samba. It could allow a remote, authenticated attacker to exploit this vulnerability to cause a denial of service.