Es maintains iperf3, a widely used network performance measurement tool deployed across research, infrastructure validation, and telecommunications environments. Vulnerabilities affecting this vendor skew strongly toward critical-severity outcomes and cluster around memory-safety and integer-handling issues—classic buffer overflows, integer overflows, off-by-one errors, and NULL-pointer dereferences—that are characteristic of measurement utilities handling untrusted network input. Defenders should apply updates promptly given the severity profile, and current exploitation and exposure counts are shown alongside this summary.
The number and severity of CVEs published that impact products developed by Es over time
Signals from CVEs in this vendor scope (8 CVEs).
8 CVEs · Highest risk first
| CVE | Published | CVSS | Risk | KEV | Exploit |
|---|---|---|---|---|---|
CVE-2025-54351CRITICAL In iperf before 3.19.1, net.c has a buffer overflow when --skip-rx-copy is used (for MSG_TRUNC in recv). | Aug 3, 2025 | 10.0 | 35 | NO | NO |
CVE-2016-4303CRITICAL The parse_string function in cjson.c in the cJSON library mishandles UTF8/16 strings, which allows remote attackers to cause a denial of service (crash) or execute arbitrary code v | Sep 26, 2016 | 9.8 | 34 | NO | NO |
CVE-2025-54349CRITICAL In iperf before 3.19.1, iperf_auth.c has an off-by-one error and resultant heap-based buffer overflow. | Aug 3, 2025 | 10.0 | 32 | NO | NO |
CVE-2023-38403HIGH iperf3 before 3.14 allows peers to cause an integer overflow and heap corruption via a crafted length field. | Jul 17, 2023 | 7.5 | 24 | NO | NO |
CVE-2025-54350MEDIUM In iperf before 3.19.1, iperf_auth.c has a Base64Decode assertion failure and application exit upon a malformed authentication attempt. | Aug 3, 2025 | 5.3 | 21 | NO | NO |
CVE-2024-53580HIGH iperf v3.17.1 was discovered to contain a segmentation violation via the iperf_exchange_parameters() function. | Dec 18, 2024 | 7.5 | 21 | NO | NO |
CVE-2024-26306MEDIUM iPerf3 before 3.17, when used with OpenSSL before 3.2.0 as a server with RSA authentication, allows a timing side channel in RSA decryption operations. This side channel could be s | May 14, 2024 | 5.9 | 20 | NO | NO |
CVE-2023-7250MEDIUM A flaw was found in iperf, a utility for testing network performance using TCP, UDP, and SCTP. A malicious or malfunctioning client can send less than the expected amount of data t | Mar 18, 2024 | 5.3 | 19 | NO | NO |
Signals from CVEs in this vendor scope (8 CVEs).
An overview of all social media posts that mention a CVE ID that affects a product developed by Es.
Media articles that mention a CVE ID that affects a product developed by Es — matched by CVE ID, not by vendor name.