Security Vulnerabilities
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.
CVSS Score
8.6
EPSS Score
0.004
Published
2026-08-13
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.
CVSS Score
8.8
EPSS Score
0.006
Published
2026-08-13
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.
CVSS Score
8.7
EPSS Score
0.006
Published
2026-08-13
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.
CVSS Score
8.3
EPSS Score
0.004
Published
2026-08-13
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.
CVSS Score
6.9
EPSS Score
0.004
Published
2026-08-13
During an internal security assessment, an improperly protected key was discovered in Lenovo Dock Manager that could allow a local authenticated user to escalate privileges.
CVSS Score
7.0
EPSS Score
0.001
Published
2026-08-13
During an internal security assessment, a potential improper permissions vulnerability was discovered in Lenovo Dock Manager that could allow a local authenticated user to execute arbitrary code with elevated privileges.
CVSS Score
8.5
EPSS Score
0.001
Published
2026-08-13
During an internal security assessment, a potential vulnerability was discovered in Lenovo Dock Manager that could allow an authenticated local user to perform an arbitrary file deletion with elevated privileges.
CVSS Score
6.9
EPSS Score
0.001
Published
2026-08-13
rsync before 3.5.0 contains a symlink following vulnerability that allows local attackers to overwrite arbitrary files by placing a symlink at a predictable output path such as --log-file, --write-batch, or daemon-mode log and statistics paths. Attackers can exploit rsync's failure to reject symlinks during ancillary file writes to redirect output to arbitrary filesystem locations, achieving local privilege escalation on installations where rsync runs with elevated privileges such as setuid or privileged daemon configurations.
CVSS Score
8.5
EPSS Score
0.002
Published
2026-08-13
rsync before 3.5.0 contains a symlink race condition vulnerability that allows local attackers to cause rsync to apply arbitrary ACLs or extended attributes to unintended files by substituting a symlink at a predictable destination path between the file write and the subsequent acl_set_file() or lsetxattr() call. Attackers can exploit this timing window to redirect ACL and xattr application through a crafted symlink to files outside the intended destination tree, potentially granting elevated permissions and enabling local privilege escalation.
CVSS Score
7.2
EPSS Score
0.001
Published
2026-08-13