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CVE-2026-53803

rsync < 3.5.0 Symlink Following Arbitrary File Overwrite PUBLISHED

Description (CNA)

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.

Affected (CNA)

Vendor / productVersions
RsyncProject / rsyncaffected 0 through 3.4.4; unaffected 3.5.0

CWE

CWE-59

References

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.