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CVE-2026-90778

Estado: AplazadaAlta (8.7)—

SIPp through 3.7.7 contains a buffer overflow vulnerability in get_peer_tag() function when processing SIP To headers with tag parameters of 2049 bytes or more. Unauthenticated remote attackers can send crafted SIP messages with oversized tag parameters to overflow the static buffer and crash 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).

🎯 Técnicas ATT&CK

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

Buffer overflow en aplicación expuesta SIPp mediante mensajes SIP crafted (AV:N/PR:N). Overflow causa crash del proceso (negación de servicio).

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

Filter Network TrafficVulnerability ScanningPrivileged Account ManagementNetwork SegmentationLimit Access to Resource Over NetworkApplication Isolation and Sandboxing

Tecnologías afectadas (1)

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

Sipp — SippAI

CWE

Referencias

JSON original (NVD)

Mostrar
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  "id": "CVE-2026-90778",
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          "id": "CVE-2026-90778",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
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            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "partial"
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          "version": "2.0.3",
          "timestamp": "2026-09-14T17:06:10.559977Z"
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          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
          "integrityImpact": "NONE",
          "userInteraction": "NONE",
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          "availabilityImpact": "HIGH",
          "privilegesRequired": "NONE",
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      }
    ],
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        "cvssData": {
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          "Automatable": "NOT_DEFINED",
          "attackVector": "NETWORK",
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          "valueDensity": "NOT_DEFINED",
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          "vulnIntegrityImpact": "NONE",
          "integrityRequirement": "NOT_DEFINED",
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          "modifiedAttackRequirements": "NOT_DEFINED",
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          "modifiedVulnIntegrityImpact": "NOT_DEFINED",
          "vulnerabilityResponseEffort": "NOT_DEFINED",
          "modifiedSubAvailabilityImpact": "NOT_DEFINED",
          "modifiedVulnAvailabilityImpact": "NOT_DEFINED",
          "modifiedSubConfidentialityImpact": "NOT_DEFINED",
          "modifiedVulnConfidentialityImpact": "NOT_DEFINED"
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      "affectedData": [
        {
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          "vendor": "SIPp",
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          "versions": [
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              "status": "affected",
              "version": "0",
              "versionType": "semver",
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  "published": "2026-09-13T12:17:16.837",
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      "url": "https://github.com/SIPp/sipp",
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    {
      "url": "https://github.com/SIPp/sipp/blob/v3.7.7/src/sip_parser.cpp#L76-L113",
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      "url": "https://www.vulncheck.com/advisories/sipp-through-3.7.7-buffer-overflow-via-sip-to-header-tag",
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      "lang": "en",
      "value": "SIPp through 3.7.7 contains a buffer overflow vulnerability in get_peer_tag() function when processing SIP To headers with tag parameters of 2049 bytes or more. Unauthenticated remote attackers can send crafted SIP messages with oversized tag parameters to overflow the static buffer and crash the process."
    }
  ],
  "lastModified": "2026-09-23T17:17:47.527",
  "sourceIdentifier": "disclosure@vulncheck.com"
}