CVE-2026-70458
rsync 3.0.0 < 3.5.0 Out-of-Bounds Write via FLAG_HLINKED Handling
CVSS Score
8.2
EPSS Score
0.0%
EPSS Percentile
0th
rsync 3.0.0 before 3.5.0 contains an out-of-bounds write vulnerability that allows attackers to corrupt memory by triggering HLINK_BUMP processing on file entries with the FLAG_HLINKED flag set while the hard-link preservation option is inactive. Attackers can exploit the missing F_SUM field in the file_struct layout to access memory past the end of the allocated structure, corrupting adjacent heap or stack data.
| CWE | CWE-787 |
| Vendor | rsyncproject |
| Product | rsync |
| Published | Aug 13, 2026 |
| Last Updated | Aug 13, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
Low
Availability
High
Affected Versions
RsyncProject / rsync
3.0.0 ≤ 3.4.4
References
Credits
gregkh