CVE-2026-33583
Exposure of the QKEY (used as input into the ‘OTA-Quantum’ device registration process) and internal system keys via an unauthenticated and unencrypted HTTP GET method in the Arqit Symmetric Key Agreement Platform.
This issue affects Symmetric Key Agreement Platform: before 26.03.
CVSS
- Versión: 3.1
- Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:N
- Puntuación base: 8.7
Probabilidad de explotación (EPSS)
- Probabilidad de explotación en los próximos 30 días: 0.34%
- Percentil entre todas las CVEs puntuadas: 25
- Fecha de la puntuación: 6/10/2026
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.
- Explotación
T1190Exploit Public-Facing Applicationinitial access90 % - Impacto principal
T1552.007Container APIcredential access85 % - Impacto secundario
T1005Data from Local Systemcollection75 %
AV:N/PR:N indica aplicación web expuesta sin autenticación (T1190). HTTP GET sin cifrado y sin autenticación expone QKEY y claves del sistema (T1552.007: credenciales en repositorios públicos/accesibles; T1005: acceso a datos del sistema).
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
Tecnologías afectadas (1)
⚠ Inferidas por IA a partir de la descripción — NVD aún no ha analizado esta CVE; no son CPE verificados.
CWE
- CWE-749
Referencias
JSON original (NVD)
Mostrar
{
"id": "CVE-2026-33583",
"cveTags": [],
"metrics": {
"ssvcV203": [
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"ssvcData": {
"id": "CVE-2026-33583",
"role": "CISA Coordinator",
"options": [
{
"exploitation": "none"
},
{
"automatable": "no"
},
{
"technicalImpact": "total"
}
],
"version": "2.0.3",
"timestamp": "2026-05-13T18:57:23.168695Z"
}
}
],
"cvssMetricV31": [
{
"type": "Secondary",
"source": "a6d3dc9e-0591-4a13-bce7-0f5b31ff6158",
"cvssData": {
"scope": "CHANGED",
"version": "3.1",
"baseScore": 8.7,
"attackVector": "NETWORK",
"baseSeverity": "HIGH",
"vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:N",
"integrityImpact": "HIGH",
"userInteraction": "NONE",
"attackComplexity": "HIGH",
"availabilityImpact": "NONE",
"privilegesRequired": "NONE",
"confidentialityImpact": "HIGH"
},
"impactScore": 5.8,
"exploitabilityScore": 2.2
}
]
},
"affected": [
{
"source": "a6d3dc9e-0591-4a13-bce7-0f5b31ff6158",
"affectedData": [
{
"vendor": "Arqit",
"product": "Symmetric Key Agreement Platform",
"versions": [
{
"status": "affected",
"version": "0",
"lessThan": "26.03",
"versionType": "semver"
}
],
"defaultStatus": "unaffected"
}
]
}
],
"published": "2026-05-13T19:17:06.873",
"references": [
{
"url": "https://www.cvcn.gov.it/cvcn/cve/CVE-2026-33583",
"source": "a6d3dc9e-0591-4a13-bce7-0f5b31ff6158"
}
],
"vulnStatus": "Deferred",
"weaknesses": [
{
"type": "Secondary",
"source": "a6d3dc9e-0591-4a13-bce7-0f5b31ff6158",
"description": [
{
"lang": "en",
"value": "CWE-749"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "Exposure of the QKEY (used as \ninput into the ‘OTA-Quantum’ device registration process) and internal \nsystem keys via an unauthenticated and unencrypted HTTP GET method in the Arqit Symmetric Key Agreement Platform.\n\nThis issue affects Symmetric Key Agreement Platform: before 26.03."
}
],
"lastModified": "2026-06-17T10:37:44.687",
"sourceIdentifier": "a6d3dc9e-0591-4a13-bce7-0f5b31ff6158"
}