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CVE-2025-54350

Status: ModifiedMedium (5.3)—

In iperf before 3.19.1, iperf_auth.c has a Base64Decode assertion failure and application exit upon a malformed authentication attempt.

CVSS

Exploitation probability (EPSS)

EPSS (Exploit Prediction Scoring System, FIRST) estimates how likely a vulnerability is to be exploited in the wild within 30 days. It complements CVSS (impact) and CISA KEV (confirmed exploitation).

Affected technologies (1)

ES — Iperf3

CWEs

References

Raw JSON (NVD)

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{
  "id": "CVE-2025-54350",
  "cveTags": [],
  "metrics": {
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      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2025-54350",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2025-08-04T20:13:25.013308Z"
        }
      }
    ],
    "cvssMetricV31": [
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        "type": "Secondary",
        "source": "cve@mitre.org",
        "cvssData": {
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          "baseScore": 3.7,
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          "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L",
          "integrityImpact": "NONE",
          "userInteraction": "NONE",
          "attackComplexity": "HIGH",
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          "privilegesRequired": "NONE",
          "confidentialityImpact": "NONE"
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          "integrityImpact": "NONE",
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          "confidentialityImpact": "NONE"
        },
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  "affected": [
    {
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        {
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          "versions": [
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  "published": "2025-08-03T02:15:37.193",
  "references": [
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      "tags": [
        "Patch"
      ],
      "source": "cve@mitre.org"
    },
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      "url": "https://github.com/esnet/iperf/releases/tag/3.19.1",
      "tags": [
        "Release Notes"
      ],
      "source": "cve@mitre.org"
    },
    {
      "url": "https://lists.debian.org/debian-lts-announce/2025/08/msg00020.html",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
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      "source": "cve@mitre.org",
      "description": [
        {
          "lang": "en",
          "value": "CWE-617"
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  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "In iperf before 3.19.1, iperf_auth.c has a Base64Decode assertion failure and application exit upon a malformed authentication attempt."
    },
    {
      "lang": "es",
      "value": "En iperf anterior a 3.19.1, iperf_auth.c tiene una falla de afirmación Base64Decode y la aplicación sale tras un intento de autenticación mal formado."
    }
  ],
  "lastModified": "2026-06-17T09:39:55.040",
  "configurations": [
    {
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        {
          "negate": false,
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          ],
          "operator": "OR"
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  "sourceIdentifier": "cve@mitre.org"
}