CVE catalog
CVE-2026-70456
rsync 3.0.1 before 3.5.0 contains an out-of-bounds write vulnerability in the read_args() function that allows a malicious sender to corrupt adjacent heap memory by sending a crafted argument list. Wh
- Severity
- High · CVSS 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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X - Published
- Source
- [NVD] · [CVE record]
- EPSS
- 0.40% · Oct 25, 2026
rsync 3.0.1 before 3.5.0 contains an out-of-bounds write vulnerability in the read_args() function that allows a malicious sender to corrupt adjacent heap memory by sending a crafted argument list. When the argument count causes the argv allocation to be exactly full, the trailing NULL terminator is written one slot beyond the allocation boundary, corrupting adjacent heap memory.
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 | vulnerable |
| Debian | rsync | trixie-security | 3.5.0+ds1-0+deb13u1 | fixed |
| Debian | rsync | bookworm | 3.2.7-1+deb12u6 | vulnerable |
| Debian | rsync | bookworm-security | 3.2.7-1+deb12u5 | vulnerable |
| Alpine | rsync | 3.21 | 3.5.0-r0 | fixed |
| Alpine | rsync | 3.22 | 3.5.0-r0 | fixed |
| Alpine | rsync | 3.23 | 3.5.0-r0 | fixed |
| Alpine | rsync | 3.24 | 3.5.0-r0 | fixed |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | rsync | source | sid | 3.5.0+ds1-1 | not yet assigned | Not reported | Not reported |
| Debian | rsync | source | forky | 3.5.0+ds1-1 | not yet assigned | Not reported | Not reported |
| Debian | rsync | source | trixie | 3.5.0+ds1-0+deb13u1 | not yet assigned | Not reported | Not reported |
| Debian | rsync | source | bookworm | (unfixed) | not yet assigned | Not reported | Not reported |
| Alpine | rsync | apk | 3.21 | 3.5.0-r0 | Not reported | ALPINE-CVE-2026-70456 | Not reported |
| Alpine | rsync | apk | 3.22 | 3.5.0-r0 | Not reported | ALPINE-CVE-2026-70456 | Not reported |
| Alpine | rsync | apk | 3.23 | 3.5.0-r0 | Not reported | ALPINE-CVE-2026-70456 | Not reported |
| Alpine | rsync | apk | 3.24 | 3.5.0-r0 | Not reported | ALPINE-CVE-2026-70456 | Not reported |
OpenFactory catalog packages
[Debian 12 (Bookworm)]
- [rsync]Affected
Details (4)
3.2.7-1+deb12u6· amd64 · bookwormAffected
nvd · rsync · debian · bookworm; nvd · rsync · debian · 12
3.2.7-1+deb12u6· arm64 · bookwormAffected
nvd · rsync · debian · bookworm; nvd · rsync · debian · 12
3.2.7-1+deb12u5· amd64 · bookworm-securityAffected
nvd · rsync · debian · bookworm; nvd · rsync · debian · 12
3.2.7-1+deb12u5· arm64 · bookworm-securityAffected
nvd · rsync · debian · bookworm; nvd · rsync · debian · 12
[Debian 13 (Trixie)]
- [rsync]Affected
Details (5)
3.4.1+ds1-5+deb13u4· amd64 · trixieAffected · Fixed:
3.5.0+ds1-0+deb13u1nvd · rsync · debian · 13
3.4.1+ds1-5+deb13u4· arm64 · trixieAffected · Fixed:
3.5.0+ds1-0+deb13u1nvd · rsync · debian · 13
3.4.1+ds1-5+deb13u3· amd64 · trixie-security · Historical versionAffected · Fixed:
3.5.0+ds1-0+deb13u1nvd · rsync · debian · 13
3.4.1+ds1-5+deb13u3· arm64 · trixie-securityAffected · Fixed:
3.5.0+ds1-0+deb13u1nvd · rsync · debian · 13
3.5.0+ds1-0+deb13u1· amd64 · trixie-securityFixed · Fixed:
3.5.0+ds1-0+deb13u1nvd · rsync · debian · 13
Observed:
References
- [https://ftp.suse.com/pub/projects/security/csaf/suse-su-2026_3634-1.json]
- [https://github.com/RsyncProject/rsync/releases/tag/v3.5.0]
- [https://github.com/RsyncProject/rsync/security/advisories/GHSA-78jc-79jv-v6rw]
- [https://nvd.nist.gov/vuln/detail/CVE-2026-70456]
- [https://osv.dev/vulnerability/ALPINE-CVE-2026-70456]
- [https://osv.dev/vulnerability/DEBIAN-CVE-2026-70456]
- [https://security-tracker.debian.org/tracker/CVE-2026-70456]
- [https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-70456.json]
- [https://wid.cert-bund.de/.well-known/csaf/white/2026/wid-sec-w-2026-2817.json]
- [https://www.vulncheck.com/advisories/rsync-heap-out-of-bounds-write-via-read-args]
[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]