CVE-2026-16406 (GCVE-0-2026-16406)

Vulnerability from cvelistv5 – Published: 2026-07-21 12:38 – Updated: 2026-07-21 12:38
VLAI
Title
Mitigation bypass in the Networking component
Summary
Mitigation bypass in the Networking component. This vulnerability was fixed in Firefox 153.
Severity
No CVSS data available.
Assigner
Impacted products
Vendor Product Version
Mozilla Firefox Unaffected: 153 , ≤ * (rpm)
Create a notification for this product.
Credits
Rintaro Kawasugi
Show details on NVD website

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    "cna": {
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        {
          "product": "Firefox",
          "vendor": "Mozilla",
          "versions": [
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "153",
              "versionType": "rpm"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "value": "Rintaro Kawasugi"
        }
      ],
      "descriptions": [
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          "supportingMedia": [
            {
              "base64": false,
              "type": "text/html",
              "value": "Mitigation bypass in the Networking component. This vulnerability was fixed in Firefox 153."
            }
          ],
          "value": "Mitigation bypass in the Networking component. This vulnerability was fixed in Firefox 153."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-07-21T12:38:18.255Z",
        "orgId": "f16b083a-5664-49f3-a51e-8d479e5ed7fe",
        "shortName": "mozilla"
      },
      "references": [
        {
          "url": "https://bugzilla.mozilla.org/show_bug.cgi?id=2040382"
        },
        {
          "url": "https://www.mozilla.org/security/advisories/mfsa2026-68/"
        }
      ],
      "title": "Mitigation bypass in the Networking component"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "f16b083a-5664-49f3-a51e-8d479e5ed7fe",
    "assignerShortName": "mozilla",
    "cveId": "CVE-2026-16406",
    "datePublished": "2026-07-21T12:38:18.255Z",
    "dateReserved": "2026-07-20T21:57:43.911Z",
    "dateUpdated": "2026-07-21T12:38:18.255Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2026-16406\",\"sourceIdentifier\":\"security@mozilla.org\",\"published\":\"2026-07-21T13:17:16.013\",\"lastModified\":\"2026-07-21T18:31:51.680\",\"vulnStatus\":\"Awaiting Analysis\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"Mitigation bypass in the Networking component. This vulnerability was fixed in Firefox 153.\"}],\"affected\":[{\"source\":\"security@mozilla.org\",\"affectedData\":[{\"vendor\":\"Mozilla\",\"product\":\"Firefox\",\"versions\":[{\"version\":\"153\",\"lessThanOrEqual\":\"*\",\"versionType\":\"rpm\",\"status\":\"unaffected\"}]}]}],\"metrics\":{},\"references\":[{\"url\":\"https://bugzilla.mozilla.org/show_bug.cgi?id=2040382\",\"source\":\"security@mozilla.org\"},{\"url\":\"https://www.mozilla.org/security/advisories/mfsa2026-68/\",\"source\":\"security@mozilla.org\"}]}}"
  }
}



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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.

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