Vulnerability Details CVE-2026-53803
rsync before 3.5.0 contains a symlink following vulnerability that allows local attackers to overwrite arbitrary files by placing a symlink at a predictable output path such as --log-file, --write-batch, or daemon-mode log and statistics paths. Attackers can exploit rsync's failure to reject symlinks during ancillary file writes to redirect output to arbitrary filesystem locations, achieving local privilege escalation on installations where rsync runs with elevated privileges such as setuid or privileged daemon configurations.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.002
EPSS Ranking 13.6%
CVSS Severity
CVSS v3 Score 7.8
References
Products affected by CVE-2026-53803
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cpe:2.3:a:samba:rsync:1.6.4
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cpe:2.3:a:samba:rsync:1.6.5
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cpe:2.3:a:samba:rsync:1.6.6
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cpe:2.3:a:samba:rsync:1.6.7
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cpe:2.3:a:samba:rsync:1.6.8
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cpe:2.3:a:samba:rsync:1.6.9
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cpe:2.3:a:samba:rsync:1.7.0
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cpe:2.3:a:samba:rsync:1.7.1
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cpe:2.3:a:samba:rsync:1.7.2
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cpe:2.3:a:samba:rsync:1.7.3
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cpe:2.3:a:samba:rsync:1.7.4
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cpe:2.3:a:samba:rsync:2.0.0
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cpe:2.3:a:samba:rsync:2.0.1
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cpe:2.3:a:samba:rsync:2.0.10
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cpe:2.3:a:samba:rsync:2.0.11
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cpe:2.3:a:samba:rsync:2.0.12
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cpe:2.3:a:samba:rsync:2.0.13
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cpe:2.3:a:samba:rsync:2.0.14
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cpe:2.3:a:samba:rsync:2.0.15
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cpe:2.3:a:samba:rsync:2.0.16
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cpe:2.3:a:samba:rsync:2.0.17
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cpe:2.3:a:samba:rsync:2.0.18
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cpe:2.3:a:samba:rsync:2.0.19
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cpe:2.3:a:samba:rsync:2.0.2
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cpe:2.3:a:samba:rsync:2.0.3
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cpe:2.3:a:samba:rsync:2.0.4
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cpe:2.3:a:samba:rsync:2.0.5
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cpe:2.3:a:samba:rsync:2.0.6
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cpe:2.3:a:samba:rsync:2.0.7
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cpe:2.3:a:samba:rsync:2.0.8
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cpe:2.3:a:samba:rsync:2.0.9
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cpe:2.3:a:samba:rsync:2.1.0
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cpe:2.3:a:samba:rsync:2.1.1
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cpe:2.3:a:samba:rsync:2.2.0
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cpe:2.3:a:samba:rsync:2.2.1
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cpe:2.3:a:samba:rsync:2.3.0
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cpe:2.3:a:samba:rsync:2.3.1
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cpe:2.3:a:samba:rsync:2.3.2
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cpe:2.3:a:samba:rsync:2.3.3
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cpe:2.3:a:samba:rsync:2.4.0
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cpe:2.3:a:samba:rsync:2.4.1
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cpe:2.3:a:samba:rsync:2.4.2
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cpe:2.3:a:samba:rsync:2.4.3
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cpe:2.3:a:samba:rsync:2.4.4
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cpe:2.3:a:samba:rsync:2.4.5
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cpe:2.3:a:samba:rsync:2.4.6
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cpe:2.3:a:samba:rsync:2.4.7
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cpe:2.3:a:samba:rsync:2.4.8
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cpe:2.3:a:samba:rsync:2.5.0
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cpe:2.3:a:samba:rsync:2.5.1
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cpe:2.3:a:samba:rsync:2.5.2
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cpe:2.3:a:samba:rsync:2.5.3
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cpe:2.3:a:samba:rsync:2.5.4
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cpe:2.3:a:samba:rsync:2.5.5
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cpe:2.3:a:samba:rsync:2.5.6
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cpe:2.3:a:samba:rsync:2.5.7
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cpe:2.3:a:samba:rsync:2.6.0
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cpe:2.3:a:samba:rsync:2.6.1
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cpe:2.3:a:samba:rsync:2.6.2
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cpe:2.3:a:samba:rsync:2.6.3
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cpe:2.3:a:samba:rsync:2.6.4
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cpe:2.3:a:samba:rsync:2.6.5
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cpe:2.3:a:samba:rsync:2.6.6
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cpe:2.3:a:samba:rsync:2.6.7
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cpe:2.3:a:samba:rsync:2.6.8
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cpe:2.3:a:samba:rsync:2.6.9
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cpe:2.3:a:samba:rsync:3.0.0
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cpe:2.3:a:samba:rsync:3.0.1
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cpe:2.3:a:samba:rsync:3.0.2
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cpe:2.3:a:samba:rsync:3.0.3
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cpe:2.3:a:samba:rsync:3.0.4
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cpe:2.3:a:samba:rsync:3.0.5
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cpe:2.3:a:samba:rsync:3.0.6
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cpe:2.3:a:samba:rsync:3.0.7
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cpe:2.3:a:samba:rsync:3.0.8
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cpe:2.3:a:samba:rsync:3.0.9
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cpe:2.3:a:samba:rsync:3.1.0
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cpe:2.3:a:samba:rsync:3.1.1
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cpe:2.3:a:samba:rsync:3.1.2
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cpe:2.3:a:samba:rsync:3.1.3
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cpe:2.3:a:samba:rsync:3.2.0
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cpe:2.3:a:samba:rsync:3.2.1
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cpe:2.3:a:samba:rsync:3.2.2
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cpe:2.3:a:samba:rsync:3.2.3
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cpe:2.3:a:samba:rsync:3.2.4
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cpe:2.3:a:samba:rsync:3.2.5
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cpe:2.3:a:samba:rsync:3.2.6
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cpe:2.3:a:samba:rsync:3.2.7
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cpe:2.3:a:samba:rsync:3.3.0
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cpe:2.3:a:samba:rsync:3.4.0
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cpe:2.3:a:samba:rsync:3.4.1
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cpe:2.3:a:samba:rsync:3.4.2
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cpe:2.3:a:samba:rsync:3.4.3
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cpe:2.3:a:samba:rsync:3.4.4