CVE-2021-27211
Estado: ModificadaAlta (7.5)—PoC
Gravedad7.5Alta · CVSS 3.1
Probabilidad de explotación3.25 %mayor que el 88 % de las CVE
Explotación activaNono figura en el catálogo de CISA
Exploit públicoDisponiblePrueba de concepto en GitHub (no verificada)
steghide versión 0.5.1, se basa en un cierto valor de seed de 32 bits, lo que facilita a atacantes la detección de datos ocultos
CVSS
- Puntuación base
- 7.5
- Versión
- 3.1
- Vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Probabilidad de explotación (EPSS)
- Probabilidad de explotación en los próximos 30 días
- 3.25 %
- Percentil entre todas las CVEs puntuadas
- 88
- Fecha de la puntuación
- 21/10/2026
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).
Exploits públicos
Hay código de explotación o plantillas de detección públicos. No es lo mismo que explotación activa confirmada (KEV), pero aumenta el riesgo: parchee con prioridad.
- Prueba de concepto en GitHub (no verificada) · Lista de pruebas de concepto en GitHub
⚠️ Las pruebas de concepto de GitHub no están verificadas: algunas son falsas o contienen malware. No las ejecute nunca fuera de un laboratorio aislado.
Tecnologías afectadas (1)
CWE
- CWE-335
Referencias
Mostrar las 8 referencias
- http://packetstormsecurity.com/files/165199/Steghide-Hidden-Data-Extraction.html
- https://github.com/StefanoDeVuono/steghide
- https://github.com/b4shfire/stegcrack
- https://sourceforge.net/projects/steghide/files/steghide/0.5.1/
- http://packetstormsecurity.com/files/165199/Steghide-Hidden-Data-Extraction.html
- https://github.com/StefanoDeVuono/steghide
- https://github.com/b4shfire/stegcrack
- https://sourceforge.net/projects/steghide/files/steghide/0.5.1/
JSON original (NVD)
Mostrar
{
"id": "CVE-2021-27211",
"cveTags": [],
"metrics": {
"cvssMetricV2": [
{
"type": "Primary",
"source": "nvd@nist.gov",
"cvssData": {
"version": "2.0",
"baseScore": 5,
"accessVector": "NETWORK",
"vectorString": "AV:N/AC:L/Au:N/C:P/I:N/A:N",
"authentication": "NONE",
"integrityImpact": "NONE",
"accessComplexity": "LOW",
"availabilityImpact": "NONE",
"confidentialityImpact": "PARTIAL"
},
"acInsufInfo": false,
"impactScore": 2.9,
"baseSeverity": "MEDIUM",
"obtainAllPrivilege": false,
"exploitabilityScore": 10,
"obtainUserPrivilege": false,
"obtainOtherPrivilege": false,
"userInteractionRequired": false
}
],
"cvssMetricV31": [
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"baseSeverity": "HIGH",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
"integrityImpact": "NONE",
"userInteraction": "NONE",
"attackComplexity": "LOW",
"availabilityImpact": "NONE",
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},
"impactScore": 3.6,
"exploitabilityScore": 3.9
}
]
},
"affected": [
{
"source": "cve@mitre.org",
"affectedData": [
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"versions": [
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],
"published": "2021-02-15T19:15:13.207",
"references": [
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"url": "http://packetstormsecurity.com/files/165199/Steghide-Hidden-Data-Extraction.html",
"tags": [
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"source": "cve@mitre.org"
},
{
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"tags": [
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"source": "cve@mitre.org"
},
{
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{
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},
{
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"tags": [
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"source": "af854a3a-2127-422b-91ae-364da2661108"
},
{
"url": "https://github.com/StefanoDeVuono/steghide",
"tags": [
"Product"
],
"source": "af854a3a-2127-422b-91ae-364da2661108"
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{
"url": "https://github.com/b4shfire/stegcrack",
"tags": [
"Product"
],
"source": "af854a3a-2127-422b-91ae-364da2661108"
},
{
"url": "https://sourceforge.net/projects/steghide/files/steghide/0.5.1/",
"tags": [
"Release Notes",
"Third Party Advisory"
],
"source": "af854a3a-2127-422b-91ae-364da2661108"
}
],
"vulnStatus": "Modified",
"weaknesses": [
{
"type": "Primary",
"source": "nvd@nist.gov",
"description": [
{
"lang": "en",
"value": "CWE-335"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "steghide 0.5.1 relies on a certain 32-bit seed value, which makes it easier for attackers to detect hidden data."
},
{
"lang": "es",
"value": "steghide versión 0.5.1, se basa en un cierto valor de seed de 32 bits, lo que facilita a atacantes la detección de datos ocultos"
}
],
"lastModified": "2026-06-17T03:44:28.360",
"configurations": [
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:a:steghide_project:steghide:0.5.1:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "FD38FA59-8E93-4617-B4EE-175ABF0D5CC8"
}
],
"operator": "OR"
}
]
}
],
"sourceIdentifier": "cve@mitre.org"
}