Iperf3
CVE-2025-54350
LOW
Vulnerability Assessment
| Weakness |
CWE
OWASP Top 10:2025
A06:2021 - Vulnerable and Outdated Components
ASVS 5.0
V16 - Security Logging and Error Handling Reachable assertion handling
|
| Impact | CVSS score of 3.7 (LOW). Attack characteristics: network attack vector, high complexity, no privileges required, no user interaction not required. EPSS exploitation probability: 0.03%. |
| Exploit ScenarioDerived | This vulnerability can be exploited remotely over the network. Successful exploitation could compromise the low-severity affected system. |
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Alert meAnalysisAIv1 – Mar 28, 2026
In iperf before 3.19.1, iperf_auth.c has a Base64Decode assertion failure and application exit upon a malformed authentication attempt. Rated low severity (CVSS 3.7), this vulnerability is remotely exploitable, no authentication required.
RemediationAI
A vendor patch is available. Apply the latest security update as soon as possible. Apply vendor patches when available. Implement network segmentation and monitoring as interim mitigations.
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Technical ContextAI · show details
This vulnerability is classified under CWE-617. In iperf before 3.19.1, iperf_auth.c has a Base64Decode assertion failure and application exit upon a malformed authentication attempt. Affected products include: Es Iperf3. Version information: before 3.19.1.
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- Exploit and PoC references, threat intelligence from 22 sources
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Severity by source
AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L
Primary rating from NVD · only source for this CVE.
CVSS VectorNVD
Lifecycle Timeline
2DescriptionCVE.org
In iperf before 3.19.1, iperf_auth.c has a Base64Decode assertion failure and application exit upon a malformed authentication attempt.
Executive ViewAI
CVE-2025-54350 is a low-severity vulnerability in iperf (CVSS 3.7). The limited severity suggests constrained impact, typically requiring specific conditions or local access for exploitation. A patch is available and can be applied during standard maintenance windows.
Apply vendor patch during routine maintenance. Standard security controls provide adequate interim protection.
Threat Intelligence Overview
How this decision was reached
The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.
What every action level means
SSVC AssessmentENISA
Priority Score
Attack Technique
Denial of Service attacks render applications or systems unavailable by overwhelming resources or triggering failure conditions.
Affected Products (CPE)CVE.org
The parse_string function in cjson.c in the cJSON library mishandles UTF8/16 strings, which allows remote attackers to c
iperf v3.17.1 was discovered to contain a segmentation violation via the iperf_exchange_parameters() function. Rated hig
Remote unauthenticated heap use-after-free in iperf3 3.21 can let an attacker crash or potentially execute code on an ex
Heap-based buffer overflow in iperf3 3.20 and 3.21 allows an unauthenticated remote client to overrun a 256-byte RSA buf
Denial of service in iperf3 prior to 3.22 allows unauthenticated remote attackers to permanently pin a UDP receive worke
iperf3 before 3.14 allows peers to cause an integer overflow and heap corruption via a crafted length field. Rated high
iPerf3 before 3.17, when used with OpenSSL before 3.2.0 as a server with RSA authentication, allows a timing side channe
In iperf before 3.19.1, net.c has a buffer overflow when --skip-rx-copy is used (for MSG_TRUNC in recv). Rated high seve
In iperf before 3.19.1, iperf_auth.c has an off-by-one error and resultant heap-based buffer overflow. Rated medium seve
GitHub PoC
Exploit-DB