CVE-2026-79783

LOW 3.6

rclone before 1.74.4 Privilege Escalation via setuid Metadata

CVSS Score

3.6

EPSS Score

0.0%

EPSS Percentile

0th

rclone before 1.74.4 fails to mask special permission bits when applying source-supplied mode metadata in the local backend, allowing attackers to set setuid/setgid bits on attacker-controlled files. When copying with metadata preservation from an untrusted remote, attackers can plant a setuid binary that escalates privileges to root if rclone runs as root, or to the service account user otherwise.

CWE	CWE-732
Vendor	rclone
Product	rclone
Published	Aug 25, 2026
Last Updated	Aug 25, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N

Attack Vector

Local

Attack Complexity

High

Privileges Required

None

User Interaction

Required

Scope

Unchanged

Confidentiality

Low

Integrity

Low

Availability

None

Affected Versions

rclone / rclone

0 < 1.74.4

References

NVD ↗ CVE.org ↗ EPSS Data ↗

github.com: https://github.com/rclone/rclone/security/advisories/GHSA-945v-v9p3-v5xw vulncheck.com: https://www.vulncheck.com/advisories/rclone-before-privilege-escalation-via-setuid-metadata

Credits

🔍 vnth4nhnt ncw