Vulnerability Description
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
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Samba | Rsync | >= 3.2.5, < 3.5.0 |
Related Weaknesses (CWE)
References
- https://github.com/RsyncProject/rsync/releases/tag/v3.5.0ProductRelease Notes
- https://github.com/RsyncProject/rsync/security/advisories/GHSA-jhxm-j4mq-3fj4Vendor Advisory
- https://www.vulncheck.com/advisories/rsync-heap-out-of-bounds-write-via-files-frRelease NotesThird Party Advisory
FAQ
What is CVE-2026-70461?
CVE-2026-70461 is a vulnerability with a CVSS score of 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 suppl...
How severe is CVE-2026-70461?
CVE-2026-70461 has been rated HIGH with a CVSS base score of 8.2/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-70461?
Check the references section above for vendor advisories and patch information. Affected products include: Samba Rsync.