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CVE-2026-45254

Estado: AnalizadaMedia (6.5)—

In the case of the cap_net service, when a key present in the old limit was omitted from the new limit, the missing key was treated as "allow any" instead of being rejected.

In certain scenarios, an application that had previously restricted a subset of network operations could ask for a new limit that extended the permissions of the process.

CVSS

Probabilidad de explotación (EPSS)

EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).

Tecnologías afectadas (1)

Freebsd — Freebsd

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-2026-45254",
  "cveTags": [],
  "metrics": {
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          "role": "CISA Coordinator",
          "options": [
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              "exploitation": "none"
            },
            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2026-05-21T14:35:55.800907Z"
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          "baseSeverity": "MEDIUM",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N",
          "integrityImpact": "LOW",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "NONE",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "LOW"
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        "impactScore": 2.5,
        "exploitabilityScore": 3.9
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  "affected": [
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      "source": "secteam@freebsd.org",
      "affectedData": [
        {
          "vendor": "FreeBSD",
          "modules": [
            "libcap_net"
          ],
          "product": "FreeBSD",
          "versions": [
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              "version": "15.0-RELEASE",
              "lessThan": "p9",
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  "published": "2026-05-21T10:16:26.380",
  "references": [
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      "url": "https://security.freebsd.org/advisories/FreeBSD-SA-26:24.cap_net.asc",
      "tags": [
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      "source": "secteam@freebsd.org"
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    },
    {
      "lang": "es",
      "value": "En el caso del servicio cap_net, cuando una clave presente en el límite antiguo se omitía del nuevo límite, la clave faltante se trataba como 'permitir cualquiera' en lugar de ser rechazada.\n\nEn ciertos escenarios, una aplicación que había restringido previamente un subconjunto de operaciones de red podría solicitar un nuevo límite que extendía los permisos del proceso."
    }
  ],
  "lastModified": "2026-07-23T16:10:00.137",
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}