Out-of-bounds Write Affecting rsync package, versions <3.5.0+ds1-0+deb13u1


Severity

Recommended
0.0
high
0
10

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Threat Intelligence

EPSS
0.4% (32nd percentile)

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  • Snyk IDSNYK-ECHOLATEST-RSYNC-18751786
  • published13 Aug 2026
  • disclosed13 Aug 2026

Introduced: 13 Aug 2026

CVE-2026-70456  (opens in a new tab)
CWE-787  (opens in a new tab)

How to fix?

Upgrade Echo:latest rsync to version 3.5.0+ds1-0+deb13u1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream rsync package and not the rsync package as distributed by Echo. See How to fix? for Echo:latest relevant fixed versions and status.

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.

CVSS Base Scores

version 3.1