Integer overflow in Rsync - CVE-2026-70462
Published: August 13, 2026
Vulnerability identifier: #VU142276
CSH Severity: Medium
CVSS v4: 6.7 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-70462
CWE-ID: CWE-190
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to cause a denial of service.
The vulnerability exists due to integer overflow in MSG_IO_TIMEOUT handling when processing a peer-supplied MSG_IO_TIMEOUT message. A remote attacker can send a specially crafted timeout value to cause a denial of service.
User interaction is required because MSG_IO_TIMEOUT is accepted only by the connecting client.
Affected software
Rsync
How to mitigate CVE-2026-70462
Install security update from vendor's website.
Rsync - update to 3.5.0