High 8.2Published Aug 13, 2026

CVE-2026-70458rsync 3.0.0 < 3.5.0 Out-of-Bounds Write via FLAG_HLINKED Handling

Updated under an hour ago (2026-10-19 09:40 UTC)

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It affects RsyncProject rsync. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Every CVE for RsyncProject rsync

Exploited in the last 30 days

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.

CVSS: 8.2 HIGH (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H
Weakness (CWE): CWE-787
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: VulnCheck
NVD analysis: Awaiting Analysis
Record last updated: Aug 14, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

RsyncProject rsync rsyncproject:rsync (from the name)	from 3.0.0 through 3.4.4; 3.5.0 not affected	CNA record

References

https://github.com/RsyncProject/rsync/security/advisories/GHSA-gg3m-4m9m-268hvendor-advisory
https://github.com/RsyncProject/rsync/releases/tag/v3.5.0release-notes
https://www.vulncheck.com/advisories/rsync-out-of-bounds-write-via-flag-hlinked-handlingthird-party-advisory

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.