What is CVE-2026-70458?

CVE-2026-70458 is a high-severity vulnerability in Rsyncproject Rsync, classified under Out-of-bounds Write. CVSS score: 8.2/10. Published 2026-08-13.

How severe is CVE-2026-70458?

High severity. CVSS v3 base score is 8.2 out of 10.

Buffer overflow in Rsyncproject Rsync

CVE-2026-70458

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 in…

Vulnerability class: Buffer Overflow

CVSS v3 metric

CVSS v3 base score 8.2 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H.

Affected products

Rsyncproject Rsync — versions 3.0.0, 3.5.0

Weakness classification (CWE)

CWE-787 — Out-of-bounds Write

References

disclosure@vulncheck.com (release-notes)
disclosure@vulncheck.com (vendor-advisory)
disclosure@vulncheck.com (third-party-advisory)

Frequently asked questions

What is CVE-2026-70458?: CVE-2026-70458 is a high-severity vulnerability in Rsyncproject Rsync, classified under Out-of-bounds Write. CVSS score: 8.2/10. Published 2026-08-13.
How severe is CVE-2026-70458?: High severity. CVSS v3 base score is 8.2 out of 10.