CVE catalog
CVE-2026-29518
Rsync versions before 3.4.3 contain a time-of-check to time-of-use (TOCTOU) race condition in daemon file handling that allows attackers to redirect file writes outside intended directories by replaci
- Severity
- High · CVSS 7.8
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H - Published
- Source
- [NVD] · [CVE record]
- EPSS
- 0.14% · Oct 23, 2026
Rsync versions before 3.4.3 contain a time-of-check to time-of-use (TOCTOU) race condition in daemon file handling that allows attackers to redirect file writes outside intended directories by replacing parent directory components with symbolic links. Attackers with write access to a module path can exploit this race condition to create or overwrite arbitrary files, potentially modifying sensitive system files and achieving privilege escalation when the daemon runs with elevated privileges. This vulnerability can only be triggered if the chroot setting is false.
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Debian | rsync | sid | 3.5.1+ds1-2 | fixed |
| Debian | rsync | forky | 3.5.1+ds1-2 | fixed |
| Debian | rsync | trixie | 3.4.1+ds1-5+deb13u4 | fixed |
| Debian | rsync | trixie-security | 3.5.0+ds1-0+deb13u1 | fixed |
| Debian | rsync | bookworm | 3.2.7-1+deb12u6 | fixed |
| Debian | rsync | bookworm-security | 3.2.7-1+deb12u5 | fixed |
| Cpe | rsync | Not reported | 3.2.7-1ubuntu1.4 | fixed |
| Cpe | rsync | Not reported | 3.4.3 | fixed |
| Cpe | rsync | Not reported | 3.2.7-1+deb12u5 | fixed |
| Cpe | rsync | Not reported | 3.4.3 | fixed |
| Alpine | rsync | 3.20 | 3.4.3-r0 | fixed |
| Alpine | rsync | 3.21 | 3.4.3-r0 | fixed |
| Alpine | rsync | 3.22 | 3.4.3-r0 | fixed |
| Alpine | rsync | 3.23 | 3.4.3-r0 | fixed |
| Alpine | rsync | 3.24 | 3.4.3-r0 | fixed |
| Suse | rsync | linux enterprise server 12 sp5-ltss | 3.1.3-3.46.1 | fixed |
| Suse | rsync | linux enterprise server ltss extended security 12 sp5 | 3.1.3-3.46.1 | fixed |
| Ubuntu | rsync | pro | 3.1.3-6 | vulnerable |
| Ubuntu | rsync | pro | 3.1.3-8 | vulnerable |
| Ubuntu | rsync | pro | 3.1.3-8ubuntu0.1 | vulnerable |
| Ubuntu | rsync | pro | 3.1.3-8ubuntu0.2 | vulnerable |
| Ubuntu | rsync | pro | 3.1.3-8ubuntu0.3 | vulnerable |
| Ubuntu | rsync | pro | 3.1.3-8ubuntu0.4 | vulnerable |
| Ubuntu | rsync | pro | 3.1.3-8ubuntu0.5 | vulnerable |
| Ubuntu | rsync | pro | 3.1.3-8ubuntu0.7 | vulnerable |
| Ubuntu | rsync | pro | 3.1.3-8ubuntu0.8 | vulnerable |
| Ubuntu | rsync | pro | 3.1.3-8ubuntu0.9 | vulnerable |
| Ubuntu | rsync | pro | 3.1.3-8ubuntu0.9+esm1 | fixed |
| Ubuntu | rsync | 22.04 | 3.2.3-4ubuntu1 | vulnerable |
| Ubuntu | rsync | 22.04 | 3.2.3-4ubuntu2 | vulnerable |
| Ubuntu | rsync | 22.04 | 3.2.3-8ubuntu1 | vulnerable |
| Ubuntu | rsync | 22.04 | 3.2.3-8ubuntu2 | vulnerable |
| Ubuntu | rsync | 22.04 | 3.2.3-8ubuntu3 | vulnerable |
| Ubuntu | rsync | 22.04 | 3.2.3-8ubuntu3.1 | vulnerable |
| Ubuntu | rsync | 22.04 | 3.2.7-0ubuntu0.22.04.2 | vulnerable |
| Ubuntu | rsync | 22.04 | 3.2.7-0ubuntu0.22.04.3 | vulnerable |
| Ubuntu | rsync | 22.04 | 3.2.7-0ubuntu0.22.04.4 | vulnerable |
| Ubuntu | rsync | 22.04 | 3.2.7-0ubuntu0.22.04.6 | fixed |
| Ubuntu | rsync | 24.04 | 3.2.7-1 | vulnerable |
| Ubuntu | rsync | 24.04 | 3.2.7-1build1 | vulnerable |
| Ubuntu | rsync | 24.04 | 3.2.7-1build2 | vulnerable |
| Ubuntu | rsync | 24.04 | 3.2.7-1ubuntu1 | vulnerable |
| Ubuntu | rsync | 24.04 | 3.2.7-1ubuntu1.1 | vulnerable |
| Ubuntu | rsync | 24.04 | 3.2.7-1ubuntu1.2 | vulnerable |
| Ubuntu | rsync | 24.04 | 3.2.7-1ubuntu1.4 | fixed |
| Ubuntu | rsync | 25.10 | 3.4.1+ds1-3 | vulnerable |
| Ubuntu | rsync | 25.10 | 3.4.1+ds1-4 | vulnerable |
| Ubuntu | rsync | 25.10 | 3.4.1+ds1-5 | vulnerable |
| Ubuntu | rsync | 25.10 | 3.4.1+ds1-5ubuntu1 | vulnerable |
| Ubuntu | rsync | 25.10 | 3.4.1+ds1-5ubuntu1.2 | fixed |
| Ubuntu | rsync | 26.04 | 3.4.1+ds1-5ubuntu1 | vulnerable |
| Ubuntu | rsync | 26.04 | 3.4.1+ds1-6 | vulnerable |
| Ubuntu | rsync | 26.04 | 3.4.1+ds1-7 | vulnerable |
| Ubuntu | rsync | 26.04 | 3.4.1+ds1-7ubuntu0.2 | fixed |
| Opensuse | rsync | tumbleweed | 3.4.3-1.1 | fixed |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | rsync | source | sid | 3.4.3+ds1-1 | not yet assigned | Not reported | Not reported |
| Debian | rsync | source | forky | 3.4.3+ds1-1 | not yet assigned | Not reported | Not reported |
| Debian | rsync | source | trixie | 3.4.1+ds1-5+deb13u3 | not yet assigned | Not reported | Not reported |
| Debian | rsync | source | bookworm | 3.2.7-1+deb12u5 | not yet assigned | Not reported | Not reported |
| Cpe | rsync | cpe | Not reported | 3.2.7-1ubuntu1.4 | Not reported | Not reported | Not reported |
| Cpe | rsync | cpe | Not reported | 3.4.3 | Not reported | Not reported | Not reported |
| Cpe | rsync | cpe | Not reported | 3.2.7-1+deb12u5 | Not reported | Not reported | Not reported |
| Cpe | rsync | cpe | Not reported | 3.4.3 | Not reported | NVD-CVE-2026-29518 | Not reported |
| Alpine | rsync | apk | 3.20 | 3.4.3-r0 | Not reported | ALPINE-CVE-2026-29518 | Not reported |
| Alpine | rsync | apk | 3.21 | 3.4.3-r0 | Not reported | ALPINE-CVE-2026-29518 | Not reported |
| Alpine | rsync | apk | 3.22 | 3.4.3-r0 | Not reported | ALPINE-CVE-2026-29518 | Not reported |
| Alpine | rsync | apk | 3.23 | 3.4.3-r0 | Not reported | ALPINE-CVE-2026-29518 | Not reported |
| Alpine | rsync | apk | 3.24 | 3.4.3-r0 | Not reported | ALPINE-CVE-2026-29518 | Not reported |
| Suse | rsync | rpm | linux enterprise server 12 sp5-ltss | 3.1.3-3.46.1 | Not reported | SUSE-SU-2026:3629-1 | Not reported |
| Suse | rsync | rpm | linux enterprise server ltss extended security 12 sp5 | 3.1.3-3.46.1 | Not reported | SUSE-SU-2026:3629-1 | Not reported |
| Ubuntu | rsync | deb | pro | 3.1.3-8ubuntu0.9+esm1 | Not reported | UBUNTU-CVE-2026-29518 | Not reported |
| Ubuntu | rsync | deb | 22.04 | 3.2.7-0ubuntu0.22.04.6 | Not reported | UBUNTU-CVE-2026-29518 | Not reported |
| Ubuntu | rsync | deb | 24.04 | 3.2.7-1ubuntu1.4 | Not reported | UBUNTU-CVE-2026-29518 | Not reported |
| Ubuntu | rsync | deb | 25.10 | 3.4.1+ds1-5ubuntu1.2 | Not reported | UBUNTU-CVE-2026-29518 | Not reported |
| Ubuntu | rsync | deb | 26.04 | 3.4.1+ds1-7ubuntu0.2 | Not reported | UBUNTU-CVE-2026-29518 | Not reported |
| Opensuse | rsync | rpm | tumbleweed | 3.4.3-1.1 | Not reported | OPENSUSE-SU-2026:10857-1 | Not reported |
OpenFactory catalog packages
[Debian 12 (Bookworm)]
- [rsync]Fixed
Details (4)
3.2.7-1+deb12u6· amd64 · bookwormFixed · Fixed:
3.2.7-1+deb12u5nvd · rsync · debian · bookworm; nvd · rsync · debian · 12
3.2.7-1+deb12u6· arm64 · bookwormFixed · Fixed:
3.2.7-1+deb12u5nvd · rsync · debian · bookworm; nvd · rsync · debian · 12
3.2.7-1+deb12u5· amd64 · bookworm-securityFixed · Fixed:
3.2.7-1+deb12u5nvd · rsync · debian · bookworm; nvd · rsync · debian · 12
3.2.7-1+deb12u5· arm64 · bookworm-securityFixed · Fixed:
3.2.7-1+deb12u5nvd · rsync · debian · bookworm; nvd · rsync · debian · 12
[Debian 13 (Trixie)]
- [rsync]Fixed
Details (5)
3.4.1+ds1-5+deb13u4· amd64 · trixieFixed · Fixed:
3.4.1+ds1-5+deb13u3nvd · rsync · debian · 13
3.4.1+ds1-5+deb13u4· arm64 · trixieFixed · Fixed:
3.4.1+ds1-5+deb13u3nvd · rsync · debian · 13
3.4.1+ds1-5+deb13u3· amd64 · trixie-security · Historical versionFixed · Fixed:
3.4.1+ds1-5+deb13u3nvd · rsync · debian · 13
3.4.1+ds1-5+deb13u3· arm64 · trixie-securityFixed · Fixed:
3.4.1+ds1-5+deb13u3nvd · rsync · debian · 13
3.5.0+ds1-0+deb13u1· amd64 · trixie-securityFixed · Fixed:
3.4.1+ds1-5+deb13u3nvd · rsync · debian · 13
[openSUSE Tumbleweed]
Observed:
References
- [https://access.redhat.com/errata/RHSA-2026:26408]
- [https://ftp.suse.com/pub/projects/security/]
- [https://nvd.nist.gov/vuln/detail/CVE-2026-29518]
- [https://osv.dev/vulnerability/ALPINE-CVE-2026-29518]
- [https://osv.dev/vulnerability/DEBIAN-CVE-2026-29518]
- [https://osv.dev/vulnerability/SUSE-SU-2026:3629-1]
- [https://osv.dev/vulnerability/UBUNTU-CVE-2026-29518]
- [https://osv.dev/vulnerability/openSUSE-SU-2026:10857-1]
- [https://security-tracker.debian.org/tracker/CVE-2026-29518]
- [https://ubuntu.com/security/notices/USN-8283-1]
- [https://wid.cert-bund.de/.well-known/csaf/white/2026/wid-sec-w-2026-2455.json]
[CERT-Bund public advisories] · [Debian Security Tracker] · [FIRST EPSS] · [National Vulnerability Database (NVD)] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX] · [SUSE security advisories and VEX] · [Ubuntu Security Notices (USN)]