CVE-2026-70459 rsync 3.0.0 < 3.5.0 Daemon Crash via Malformed File List Entry
Remote attackers can crash the rsync daemon by sending a malformed file list, causing a denial of service.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-70459?
CVE-2026-70459 is a medium-severity vulnerability in RsyncProject rsync, published on 13 Aug 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
rsync 3.0.0 before 3.5.0 contains a null pointer dereference vulnerability in the daemon child process that allows remote attackers to crash the daemon by sending a file list whose first entry is a dot entry not typed as a directory. The daemon dereferences the first file list entry as a directory structure pointer without verifying the entry type, resulting in an invalid or uninitialized pointer dereference that terminates the client connection.
Weakness: CWE-908
Which versions are affected by CVE-2026-70459?
It affects 1 product.
Products include Samba Rsync.
How do I fix CVE-2026-70459?
Upgrade to a fixed version.
Is CVE-2026-70459 being exploited?
There is no known exploitation of CVE-2026-70459 in the wild and no public exploit code.
Other vulnerabilities in RsyncProject rsync
- CVE-2017-15994 Security feature bypass in n/a
- CVE-2026-53791 rsync < 3.5.0 Daemon IP Spoofing via PROXY Protocol Header
- CVE-2026-70461 rsync 3.2.5 < 3.5.0 Heap Out-of-Bounds Write via files-from Entry
- CVE-2026-70455 rsync 3.4.2 < 3.5.0 DoS via --zt Zstandard Compression Thread Exhaustion
- CVE-2026-70463 rsync 3.1.0 < 3.5.0 Authorization Bypass via auth users Directive Parsing
Sources
Also known as ALPINE-CVE-2026-70459, AZL-95831, BELL-CVE-2026-70459, DEBIAN-CVE-2026-70459, ECHO-6d1c-53b2-c07c, GHSA-p4v4-qxw9-q72m and 1 more.