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CVE-2021-26855

CRITICALCISA KEV

9.1

Descripcion

Microsoft Exchange Server Remote Code Execution Vulnerability

Detalles CVE

Puntuacion CVSS v3.19.1

SeveridadCRITICAL

Vector CVSSCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

Vector de ataqueNETWORK

ComplejidadLOW

Privilegios requeridosNONE

Interaccion usuarioNONE

Publicado3/3/2021

Ultima modificacion12/18/2025

Fuentekev

Avistamientos honeypot0

CISA KEV

VendedorMicrosoft

ProductoExchange Server

Nombre vulnerabilidadMicrosoft Exchange Server Remote Code Execution Vulnerability

Fecha inclusion KEV2021-11-03

Fecha limite remediacion2022-05-03

Uso en ransomwareKnown

Productos afectados

microsoft:exchange_server

Debilidades (CWE)

CWE-918CWE-918

Referencias

http://packetstormsecurity.com/files/161846/Microsoft-Exchange-2019-SSRF-Arbitrary-File-Write.html(secure@microsoft.com)

http://packetstormsecurity.com/files/161938/Microsoft-Exchange-ProxyLogon-Remote-Code-Execution.html(secure@microsoft.com)

http://packetstormsecurity.com/files/162610/Microsoft-Exchange-2019-Unauthenticated-Email-Download.html(secure@microsoft.com)

http://packetstormsecurity.com/files/162736/Microsoft-Exchange-ProxyLogon-Collector.html(secure@microsoft.com)

https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-26855(secure@microsoft.com)

http://packetstormsecurity.com/files/161846/Microsoft-Exchange-2019-SSRF-Arbitrary-File-Write.html(af854a3a-2127-422b-91ae-364da2661108)

http://packetstormsecurity.com/files/161938/Microsoft-Exchange-ProxyLogon-Remote-Code-Execution.html(af854a3a-2127-422b-91ae-364da2661108)

http://packetstormsecurity.com/files/162610/Microsoft-Exchange-2019-Unauthenticated-Email-Download.html(af854a3a-2127-422b-91ae-364da2661108)

http://packetstormsecurity.com/files/162736/Microsoft-Exchange-ProxyLogon-Collector.html(af854a3a-2127-422b-91ae-364da2661108)

https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-26855(af854a3a-2127-422b-91ae-364da2661108)

https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-26855(134c704f-9b21-4f2e-91b3-4a467353bcc0)

Correlaciones IOC

Sin correlaciones registradas

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