CVEvulnerability
CVE-2026-71218
5.3 MEDIUM
Official page ↗
- Status
- Awaiting Analysis
- Published
- 2026-08-11
- Last modified
- 2026-08-14
- Assigner
- [email protected]
- CVSS 3.1 ([email protected])
- 5.3 MEDIUM — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
- Weaknesses
- CWE-789
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.
Related
Weakness · CWE (1)
- CWE-789 Memory Allocation with Excessive Size Value weakness
References
- https://access.redhat.com/security/cve/CVE-2026-71218 access.redhat.com
- https://bugzilla.redhat.com/show_bug.cgi?id=2463003 bugzilla.redhat.com
- https://github.com/esnet/iperf/commit/0128d0357b7e8916fe39e980e455729bc0e5fd4e github.com