FKIE_CVE-2025-30403

Vulnerability from fkie_nvd - Published: 2025-07-11 19:15 - Updated: 2026-06-17 09:08
Severity
8.1 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H
Summary
A heap-buffer-overflow vulnerability is possible in mvfst via a specially crafted message during a QUIC session. This issue affects mvfst versions prior to v2025.07.07.00.
References
cve-assign@fb.comhttps://github.com/facebook/mvfst/commit/65b297332191de6e867c4a3139a233fc84c0e7e0
cve-assign@fb.comhttps://www.facebook.com/security/advisories/cve-2025-30403
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "mvfst",
          "vendor": "Facebook",
          "versions": [
            {
              "lessThan": "v2025.07.07.00",
              "status": "affected",
              "version": "v2025.03.24.00",
              "versionType": "semver"
            }
          ]
        }
      ],
      "source": "cve-assign@fb.com"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "A heap-buffer-overflow vulnerability is possible in mvfst via a specially crafted message during a QUIC session. This issue affects mvfst versions prior to v2025.07.07.00."
    },
    {
      "lang": "es",
      "value": "Es posible que mvfst presente una vulnerabilidad de desbordamiento del b\u00fafer de pila mediante un mensaje especialmente manipulado durante una sesi\u00f3n QUIC. Este problema afecta a las versiones de mvfst anteriores a la v2025.07.07.00."
    }
  ],
  "id": "CVE-2025-30403",
  "lastModified": "2026-06-17T09:08:39.710",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 8.1,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "NONE",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "REQUIRED",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 2.8,
        "impactScore": 5.2,
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2025-30403",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2025-07-11T19:22:21.366810Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2025-07-11T19:15:23.327",
  "references": [
    {
      "source": "cve-assign@fb.com",
      "url": "https://github.com/facebook/mvfst/commit/65b297332191de6e867c4a3139a233fc84c0e7e0"
    },
    {
      "source": "cve-assign@fb.com",
      "url": "https://www.facebook.com/security/advisories/cve-2025-30403"
    }
  ],
  "sourceIdentifier": "cve-assign@fb.com",
  "vulnStatus": "Deferred"
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.


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Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.