Vulnerability Description
rsync 3.1.0 before 3.5.0 contains a signed integer overflow vulnerability in the I/O timeout implementation that allows attackers to permanently disable connection timeouts by injecting MSG_IO_TIMEOUT messages carrying non-positive (zero or negative) values. Attackers can craft malicious MSG_IO_TIMEOUT messages that cause the timeout variable to wrap to a non-positive value, preventing the timeout check from firing and enabling idle or stalled connections to hold daemon slots indefinitely, leading to resource exhaustion.
CVSS Score
MEDIUM
Related Weaknesses (CWE)
References
- https://github.com/RsyncProject/rsync/releases/tag/v3.5.0
- https://github.com/RsyncProject/rsync/security/advisories/GHSA-j9wh-5jmp-2m64
- https://www.vulncheck.com/advisories/rsync-signed-integer-overflow-via-msg-io-ti
FAQ
What is CVE-2026-70462?
CVE-2026-70462 is a vulnerability with a CVSS score of 6.5 (MEDIUM). rsync 3.1.0 before 3.5.0 contains a signed integer overflow vulnerability in the I/O timeout implementation that allows attackers to permanently disable connection timeouts by injecting MSG_IO_TIMEOUT...
How severe is CVE-2026-70462?
CVE-2026-70462 has been rated MEDIUM with a CVSS base score of 6.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-70462?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.