Red Hat Security Advisory: iperf3 security update
Description
A security vulnerability in iperf3 allows the server to accept unbounded peer-controlled JSON parameters, which can lead to remote denial of service via resource exhaustion. This issue is tracked as CVE-2026-71217 and affects Red Hat Enterprise Linux 9 and its variants. Red Hat has issued a security advisory and provided updated packages to address this vulnerability.
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-71217 is a vulnerability in iperf3 where the server accepts unbounded JSON parameters controlled by a peer. This flaw enables a remote attacker to cause a denial of service by exhausting server resources. The vulnerability is classified under CWE-20 (Improper Input Validation). Red Hat has released updated iperf3 packages for Red Hat Enterprise Linux 9 and its extended update support versions to fix this issue.
Potential Impact
The vulnerability allows remote attackers to cause a denial of service condition on affected systems by sending specially crafted JSON parameters that exhaust server resources. There is no indication of code execution or data compromise. No known exploits in the wild have been reported.
Mitigation Recommendations
Red Hat has released updated iperf3 packages for Red Hat Enterprise Linux 9 and its extended update support versions. Users should apply these official updates as described in Red Hat advisory RHSA-2026:61389 to remediate the vulnerability. Patch status is confirmed as an official fix available from Red Hat.
Technical Details
- Gcve Source
- db.gcve.eu
- Csaf Category
- csaf_security_advisory
- Csaf Version
- 2.0
- Publisher
- Red Hat Product Security
- Advisory Id
- RHSA-2026:61389
- Cve Count
- 1
- State
- PUBLISHED
Threat ID: 6a95a0ddacd9273b4947deb3
Added to database: 08/31/2026, 15:42:21 UTC
Last enriched: 09/08/2026, 00:22:58 UTC
Last updated: 10/15/2026, 18:48:22 UTC
Views: 43
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