CVE-2026-53795: rsync < 3.5.0 Arbitrary File Write via --temp-dir/--link-dest

highCVSS 8.1CVE-2026-53795

CSIRTS triage

vendor: rsync product: rsyncOtheraffected: < 3.5.0

What: Arbitrary file write via --temp-dir and --link-dest options allows overwriting files on the system.
Who is affected: rsync versions below 3.5.0 are affected when using vulnerable options.
Urgency: High urgency with CVSS 8.1; arbitrary file write is a critical vulnerability requiring immediate remediation.
Action: Upgrade rsync to version 3.5.0 or later.

AI-assisted analysis generated from the source advisory — verify against the original.

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Details

Source: Microsoft Security Response Center (INTL · vendor-psirt · site)
Severity: high — CVSS 8.1
Published: 2026-08-11
Exploitation: Not in CISA KEV at last sync

Original advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-53795

Exploitation outlook

EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.

Low exploitation riskCVE-2026-537950.41% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 34% of all EPSS-scored CVEs.

Referenced CVEs

CVE	CSIRTS overview	External
CVE-2026-53795	coverage & exploitation status	NVD · CVE.org

Same CVEs, other sources

How other CERTs, PSIRTs and databases cover the vulnerabilities in this advisory.

Recent advisories for rsync <

A cluster of recent advisories against the same product widens the attack surface — attackers routinely chain freshly published CVEs on one product, so review these together.

high[NEW] [high] Rsync: Multiple vulnerabilitiescert-bund · 2026-08-21
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