CVE-2026-70458: rsync 3.0.0 through 3.4.4

CVE-2026-70458. CVSS 3.1 base score 8.2 (HIGH, Vendor/CNA). EPSS 0.00396 (percentile 0.32589), scored 22-Oct-2026.

Affected technology

rsync · 3.0.0 through 3.4.4
RsyncProject

Description’s affected range: before 3.5.0

Component: Not specified by the source

Attack conditions (Vendor/CNA, CVSS 4.0): Network (remote) · No privileges required · No user interaction required

What an attacker can do

Attackers can exploit the missing F_SUM field in the file_struct layout to access memory past the end of the allocated structure, corrupting adjacent heap or stack data. Vendor/CNA’s CVSS 4.0 assessment (base score 8.8/10) rates confidentiality impact as none; integrity impact as low; availability impact as high.

Published 24-Oct-2026 01:43 UTC

CWE: CWE-787
CCR priority: 32.9 /100 (P4)
CVSS 3.1: 8.2 /10 · CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H · Vendor/CNA
EPSS: 0.00396 · percentile 0.32589 · 2026-10-22
KEV: no

Provenance

NVD CVE API 2.0 · Source record · observed 2026-10-24 01:40:49.068977+00:00 UTC

Stable permalink: https://cybercodered.org/item/cve-cve-2026-70458.html