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CVE-2026-101279

Estado: AplazadaMedia (5.5)—

A security vulnerability has been detected in Trusted Domain Project OpenDMARC up to 1.4.2. This impacts an unknown function of the file libopendmarc/opendmarc_policy.c of the component DMARC Parser. The manipulation of the argument pct leads to integer overflow. Remote exploitation of the attack is possible. The exploit has been disclosed publicly and may be used. The vendor was contacted early about this disclosure but did not respond in any way.

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).

🎯 Técnicas ATT&CK

Cómo se explota esta vulnerabilidad y qué consigue el atacante, en el lenguaje de MITRE ATT&CK.

Vector AV:N/PR:N sin UI sugiere explotación remota T1190. Integer overflow en parser DMARC puede permitir ejecución, pero impacto no explícito: baja confianza.

Inferido por nuestro agente de análisis a partir de la descripción oficial, el vector CVSS y la CWE, y comprobado por un supervisor. Puede contener errores.

🛡️ Mitigaciones ATT&CK que cubren estas técnicas

Privileged Account ManagementVulnerability ScanningRestrict Web-Based ContentNetwork SegmentationLimit Software InstallationLimit Access to Resource Over Network

Tecnologías afectadas (1)

⚠ Inferidas por IA a partir de la descripción — NVD aún no ha analizado esta CVE; no son CPE verificados.

Trusteddomain — OpendmarcAI

CWE

Referencias

JSON original (NVD)

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  "id": "CVE-2026-101279",
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          "role": "CISA Coordinator",
          "options": [
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              "automatable": "yes"
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          "version": "2.0.3",
          "timestamp": "2026-09-29T10:47:57.171616Z"
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          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:L/Au:N/C:N/I:P/A:P",
          "authentication": "NONE",
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          "availabilityImpact": "PARTIAL",
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    "cvssMetricV31": [
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          "scope": "UNCHANGED",
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          "Automatable": "NOT_DEFINED",
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          "valueDensity": "NOT_DEFINED",
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          "exploitMaturity": "PROOF_OF_CONCEPT",
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  },
  "affected": [
    {
      "source": "cna@vuldb.com",
      "affectedData": [
        {
          "cpes": [
            "cpe:2.3:a:trusted_domain_project:opendmarc:*:*:*:*:*:*:*:*"
          ],
          "vendor": "Trusted Domain Project",
          "modules": [
            "DMARC Parser"
          ],
          "product": "OpenDMARC",
          "versions": [
            {
              "status": "affected",
              "version": "1.4.0"
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              "version": "1.4.1"
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  "published": "2026-09-29T01:16:43.997",
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    {
      "url": "https://vuldb.com/cve/CVE-2026-101279",
      "source": "cna@vuldb.com"
    },
    {
      "url": "https://vuldb.com/submit/918280",
      "source": "cna@vuldb.com"
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      "url": "https://vuldb.com/vuln/411036",
      "source": "cna@vuldb.com"
    },
    {
      "url": "https://vuldb.com/vuln/411036/cti",
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      "url": "https://xuyongzhe-vt.github.io/share/dmarc-pct-integer-handling.html",
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          "value": "CWE-189"
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          "value": "CWE-190"
        }
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  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "A security vulnerability has been detected in Trusted Domain Project OpenDMARC up to 1.4.2. This impacts an unknown function of the file libopendmarc/opendmarc_policy.c of the component DMARC Parser. The manipulation of the argument pct leads to integer overflow. Remote exploitation of the attack is possible. The exploit has been disclosed publicly and may be used. The vendor was contacted early about this disclosure but did not respond in any way."
    }
  ],
  "lastModified": "2026-09-29T18:57:24.350",
  "sourceIdentifier": "cna@vuldb.com"
}