CVE-2026-71218
MEDIUM
MEDIUM
Priority: 0.02
BB Relevance:
71/100
Published: 2026-08-11
Modified: 2026-11-05
First seen: 2026-11-05
Status: active
Attack Surface
Network
Low Complexity
No Auth
No Interaction
CVSS Vector Breakdown
AV:
Network
AC:
Low
PR:
None
UI:
None
S:
Unchanged
C:
None
I:
None
A:
Low
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 (1)
References & Advisories (3)
vdb-entry
x_refsource_REDHAT
issue-tracking
x_refsource_REDHAT