Out-of-bounds write in Rsync - CVE-2026-70461
Published: August 13, 2026
Vulnerability identifier: #VU142275
CSH Severity: High
CVSS v4: 8.8 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-70461
CWE-ID: CWE-787
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 out-of-bounds write in add_implied_include() when processing transfer arguments sent by a peer. A remote attacker can send a specially crafted files-from entry to cause a denial of service.
The issue is reachable on a standard network rsync daemon with a read-only module, and no crafted protocol is required.
Affected software
Rsync
How to mitigate CVE-2026-70461
Install security update from vendor's website.
Rsync - update to 3.5.0