CVE-2025-67901: Kristapsdz Openrsync

Medium severity, CVSS 5.3. EPSS: 0.3% chance of exploitation in the next 30 days.

openrsync through 0.5.0, as used in OpenBSD through 7.8 and on other platforms, allows a client to cause a server SIGSEGV by specifying a length of zero for block data, because the relationship between p->rem and p->len is not checked.

Affected products

• Kristapsdz Openrsync: up to and including 0.5.0

Published 2025-12-15. Last modified 2026-10-07.