12 results · Feed
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Critical 9.2
iperf3 3.20–3.21 (esnet/iperf) has a pre-auth heap buffer overflow in decrypt_rsa_message(): a 256-byte RSA buffer is B…
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Critical 9.2
iperf3 3.21 (esnet/iperf) contains a remote, unauthenticated heap use-after-free: the server's per-test watchdog server…
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High 7.5CVE-2026-102253 Public exploit
iperf3 < 3.22 UDP Receive Worker Infinite Loop DoS
iperf3 versions prior to 3.22 contains a denial of service vulnerability that allows unauthenticated remote attackers to crash-loop the server's UDP receive worker into an unrecoverable infinite loop by sending a single crafted control-channel parameter messa…
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Medium 5.3
Iperf3: unbounded peer-controlled allocation in iperf3 json_read() allows unauthenticated remote memory exhaustion
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 …
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High 7.5CVE-2026-71217 Public exploit
Iperf3: iperf3 server accepts unbounded peer-controlled json parameters enabling remote denial of service via resource exhaustion
A flaw was found in iperf3. A remote attacker can exploit this vulnerability by sending crafted control-channel JSON with oversized numeric parameters, such as `parallel` and `len`, which are not properly validated by the server. This improper input validatio…
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Medium 6.5
In iperf before 3.19.1, iperf_auth.c has an off-by-one error and resultant heap-based buffer overflow.
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Low 3.7
In iperf before 3.19.1, iperf_auth.c has a Base64Decode assertion failure and application exit upon a malformed authent…
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High 7.5
iperf v3.17.1 was discovered to contain a segmentation violation via the iperf_exchange_parameters() function.
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Medium 5.9
iPerf3 before 3.17, when used with OpenSSL before 3.2.0 as a server with RSA authentication, allows a timing side chann…
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Medium 5.3
Iperf3: possible denial of service
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 to the iperf server, which can cause the server to hang indefinitely waiting for…
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Unscored —
iperf3 before 3.14 allows peers to cause an integer overflow and heap corruption via a crafted length field.
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Unscored —
The parse_string function in cjson.c in the cJSON library mishandles UTF8/16 strings, which allows remote attackers to …