Vulnerability · Published Dec 14, 2025 · Assigned by mitre
CVE-2025-67901
Medium 5.3
In plain English
A medium-severity security flaw in openrsync from kristapsdz. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 21% of all known vulnerabilities).
Severity (CVSS 3.1)5.3Medium
Exploit odds (30 days)0.3%top 79.1% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known
Official description
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 (as reported)
| Vendor | Product | Versions |
|---|---|---|
| kristapsdz | openrsync | 0 – through 0.5.0 |
Weakness: CWE-1284 · Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H