VULNERABILITY INTELLIGENCE
CVE-2026-71218
CVSS score5.3 MEDIUM
EPSS probability0.38%
CISA KEVNot currently listed
Published2026-08-11
Last modified2026-08-14
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Description
A flaw was found in iperf3. A remote unauthenticated attacker can exploit a vulnerability in the `JSON_read()` function, which accepts a peer-controlled message length and allocates memory without an upper bound. This allows the attacker to trigger excessive memory consumption, leading to a Denial of Service (DoS) through memory exhaustion, severe slowdown, or termination of the iperf3 service.
Weakness classification
- secalert@redhat.com: CWE-789