CVE-2026-70456CWE-787

CVE-2026-70456

High · published August 13, 2026

CVSS v3.1
8.2
EPSS
0%
Percentile
32.6
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
8.2 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H
CVSS v4.0
Not supplied
EPSS
0.00396 · 32.6th percentile
Weakness
CWE-787 · Out-of-bounds Write
Published
2026-08-13T19:19Z
References (3)
https://github.com/RsyncProject/rsync/releases/tag/v3.5.0 · [email protected]https://github.com/RsyncProject/rsync/security/advisories/GHSA-78jc-79jv-v6rw · [email protected]https://www.vulncheck.com/advisories/rsync-heap-out-of-bounds-write-via-read-args · [email protected]
EPSS history
Timeline
  • 13 AUG 14:44Z
    rsync 3.0.1 < 3.5.0 Heap Out-of-Bounds Write via read_args()
    cvelistv5