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MicrosoftCVELIST:CVE-2021-26855HistoryMar 02, 2021 - 11:55 p.m.
CVE-2021-26855 Microsoft Exchange Server Remote Code Execution Vulnerability
2021-03-0223:55:26
microsoft
www.cve.org
10
microsoft exchange server
remote code execution
vulnerability
CVSS3
9.1
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N/E:F/RL:O/RC:C
AI Score
9.4
Confidence
High
EPSS
0.975
Percentile
100.0%
CNA Affected
[
{
"vendor": "Microsoft",
"product": "Microsoft Exchange Server 2016 Cumulative Update 19",
"cpes": [
"cpe:2.3:a:microsoft:exchange_server:2016:cumulative_update_19:*:*:*:*:*:*"
],
"platforms": [
"x64-based Systems"
],
"versions": [
{
"version": "15.01.0",
"lessThan": "publication",
"versionType": "custom",
"status": "affected"
}
]
},
{
"vendor": "Microsoft",
"product": "Microsoft Exchange Server 2019 Cumulative Update 8",
"cpes": [
"cpe:2.3:a:microsoft:exchange_server:2019:cumulative_update_8:*:*:*:*:*:*"
],
"platforms": [
"x64-based Systems"
],
"versions": [
{
"version": "15.02.0",
"lessThan": "publication",
"versionType": "custom",
"status": "affected"
}
]
},
{
"vendor": "Microsoft",
"product": "Microsoft Exchange Server 2019",
"cpes": [
"cpe:2.3:a:microsoft:exchange_server:2019:*:*:*:*:*:*:*"
],
"platforms": [
"x64-based Systems"
],
"versions": [
{
"version": "15.02.0",
"lessThan": "publication",
"versionType": "custom",
"status": "affected"
}
]
},
{
"vendor": "Microsoft",
"product": "Microsoft Exchange Server 2013 Cumulative Update 22",
"cpes": [
"cpe:2.3:a:microsoft:exchange_server:2013:cumulative_update_22:*:*:*:*:*:*"
],
"platforms": [
"x64-based Systems"
],
"versions": [
{
"version": "15.00.0",
"lessThan": "publication",
"versionType": "custom",
"status": "affected"
}
]
},
{
"vendor": "Microsoft",
"product": "Microsoft Exchange Server 2019 Cumulative Update 2",
"cpes": [
"cpe:2.3:a:microsoft:exchange_server:2019:cumulative_update_2:*:*:*:*:*:*"
],
"platforms": [
"x64-based Systems"
],
"versions": [
{
"version": "15.02.0",
"lessThan": "publication",
"versionType": "custom",
"status": "affected"
}
]
},
{
"vendor": "Microsoft",
"product": "Microsoft Exchange Server 2016 Cumulative Update 13",
"cpes": [
"cpe:2.3:a:microsoft:exchange_server:2016:cumulative_update_13:*:*:*:*:*:*"
],
"platforms": [
"x64-based Systems"
],
"versions": [
{
"version": "15.01.0",
"lessThan": "publication",
"versionType": "custom",
"status": "affected"
}
]
},
{
"vendor": "Microsoft",
"product": "Microsoft Exchange Server 2013 Cumulative Update 23",
"cpes": [
"cpe:2.3:a:microsoft:exchange_server:2013:cumulative_update_23:*:*:*:*:*:*"
],
"platforms": [
"x64-based Systems"
],
"versions": [
{
"version": "15.00.0",
"lessThan": "publication",
"versionType": "custom",
"status": "affected"
}
]
},
{
"vendor": "Microsoft",
"product": "Microsoft Exchange Server 2019 Cumulative Update 3",
"cpes": [
"cpe:2.3:a:microsoft:exchange_server:2019:cumulative_update_3:*:*:*:*:*:*"
],
"platforms": [
"x64-based Systems"
],
"versions": [
{
"version": "15.02.0",
"lessThan": "publication",
"versionType": "custom",
"status": "affected"
}
]
},
{
"vendor": "Microsoft",
"product": "Microsoft Exchange Server 2016 Cumulative Update 14",
"cpes": [
"cpe:2.3:a:microsoft:exchange_server:2016:cumulative_update_14:*:*:*:*:*:*"
],
"platforms": [
"x64-based Systems"
],
"versions": [
{
"version": "15.01.0",
"lessThan": "publication",
"versionType": "custom",
"status": "affected"
}
]
},
{
"vendor": "Microsoft",
"product": "Microsoft Exchange Server 2019 Cumulative Update 4",
"cpes": [
"cpe:2.3:a:microsoft:exchange_server:2019:cumulative_update_4:*:*:*:*:*:*"
],
"platforms": [
"x64-based Systems"
],
"versions": [
{
"version": "15.02.0",
"lessThan": "publication",
"versionType": "custom",
"status": "affected"
}
]
},
{
"vendor": "Microsoft",
"product": "Microsoft Exchange Server 2016 Cumulative Update 15",
"cpes": [
"cpe:2.3:a:microsoft:exchange_server:2016:cumulative_update_15:*:*:*:*:*:*"
],
"platforms": [
"x64-based Systems"
],
"versions": [
{
"version": "15.01.0",
"lessThan": "publication",
"versionType": "custom",
"status": "affected"
}
]
},
{
"vendor": "Microsoft",
"product": "Microsoft Exchange Server 2019 Cumulative Update 5",
"cpes": [
"cpe:2.3:a:microsoft:exchange_server:2019:cumulative_update_5:*:*:*:*:*:*"
],
"platforms": [
"x64-based Systems"
],
"versions": [
{
"version": "15.02.0",
"lessThan": "publication",
"versionType": "custom",
"status": "affected"
}
]
},
{
"vendor": "Microsoft",
"product": "Microsoft Exchange Server 2019 Cumulative Update 6",
"cpes": [
"cpe:2.3:a:microsoft:exchange_server:2019:cumulative_update_6:*:*:*:*:*:*"
],
"platforms": [
"x64-based Systems"
],
"versions": [
{
"version": "15.02.0",
"lessThan": "publication",
"versionType": "custom",
"status": "affected"
}
]
},
{
"vendor": "Microsoft",
"product": "Microsoft Exchange Server 2016 Cumulative Update 16",
"cpes": [
"cpe:2.3:a:microsoft:exchange_server:2016:cumulative_update_16:*:*:*:*:*:*"
],
"platforms": [
"x64-based Systems"
],
"versions": [
{
"version": "15.01.0",
"lessThan": "publication",
"versionType": "custom",
"status": "affected"
}
]
},
{
"vendor": "Microsoft",
"product": "Microsoft Exchange Server 2016 Cumulative Update 17",
"cpes": [
"cpe:2.3:a:microsoft:exchange_server:2016:cumulative_update_17:*:*:*:*:*:*"
],
"platforms": [
"x64-based Systems"
],
"versions": [
{
"version": "15.01.0",
"lessThan": "publication",
"versionType": "custom",
"status": "affected"
}
]
},
{
"vendor": "Microsoft",
"product": "Microsoft Exchange Server 2019 Cumulative Update 7",
"cpes": [
"cpe:2.3:a:microsoft:exchange_server:2019:cumulative_update_7:*:*:*:*:*:*"
],
"platforms": [
"x64-based Systems"
],
"versions": [
{
"version": "15.02.0",
"lessThan": "publication",
"versionType": "custom",
"status": "affected"
}
]
},
{
"vendor": "Microsoft",
"product": "Microsoft Exchange Server 2016 Cumulative Update 18",
"cpes": [
"cpe:2.3:a:microsoft:exchange_server:2016:cumulative_update_18:*:*:*:*:*:*"
],
"platforms": [
"x64-based Systems"
],
"versions": [
{
"version": "15.01.0",
"lessThan": "publication",
"versionType": "custom",
"status": "affected"
}
]
},
{
"vendor": "Microsoft",
"product": "Microsoft Exchange Server 2013 Cumulative Update 21",
"cpes": [
"cpe:2.3:a:microsoft:exchange_server:2013:cumulative_update_21:*:*:*:*:*:*"
],
"platforms": [
"x64-based Systems"
],
"versions": [
{
"version": "15.00.0",
"lessThan": "publication",
"versionType": "custom",
"status": "affected"
}
]
},
{
"vendor": "Microsoft",
"product": "Microsoft Exchange Server 2016 Cumulative Update 12",
"cpes": [
"cpe:2.3:a:microsoft:exchange_server:2016:cumulative_update_12:*:*:*:*:*:*"
],
"platforms": [
"x64-based Systems"
],
"versions": [
{
"version": "15.01.0",
"lessThan": "publication",
"versionType": "custom",
"status": "affected"
}
]
},
{
"vendor": "Microsoft",
"product": "Microsoft Exchange Server 2016 Cumulative Update 8",
"cpes": [
"cpe:2.3:a:microsoft:exchange_server:2016:cumulative_update_8:*:*:*:*:*:*"
],
"platforms": [
"x64-based Systems"
],
"versions": [
{
"version": "15.01.0",
"lessThan": "publication",
"versionType": "custom",
"status": "affected"
}
]
},
{
"vendor": "Microsoft",
"product": "Microsoft Exchange Server 2019 Cumulative Update 1",
"cpes": [
"cpe:2.3:a:microsoft:exchange_server:2019:cumulative_update_1:*:*:*:*:*:*"
],
"platforms": [
"x64-based Systems"
],
"versions": [
{
"version": "15.02.0",
"lessThan": "publication",
"versionType": "custom",
"status": "affected"
}
]
},
{
"vendor": "Microsoft",
"product": "Microsoft Exchange Server 2016 Cumulative Update 9",
"cpes": [
"cpe:2.3:a:microsoft:exchange_server:2016:cumulative_update_9:*:*:*:*:*:*"
],
"platforms": [
"x64-based Systems"
],
"versions": [
{
"version": "15.01.0",
"lessThan": "publication",
"versionType": "custom",
"status": "affected"
}
]
},
{
"vendor": "Microsoft",
"product": "Microsoft Exchange Server 2016 Cumulative Update 10",
"cpes": [
"cpe:2.3:a:microsoft:exchange_server:2016:cumulative_update_10:*:*:*:*:*:*"
],
"platforms": [
"x64-based Systems"
],
"versions": [
{
"version": "15.01.0",
"lessThan": "publication",
"versionType": "custom",
"status": "affected"
}
]
},
{
"vendor": "Microsoft",
"product": "Microsoft Exchange Server 2016 Cumulative Update 11",
"cpes": [
"cpe:2.3:a:microsoft:exchange_server:2016:cumulative_update_11:*:*:*:*:*:*"
],
"platforms": [
"x64-based Systems"
],
"versions": [
{
"version": "15.01.0",
"lessThan": "publication",
"versionType": "custom",
"status": "affected"
}
]
}
]References
packetstormsecurity.com/files/161846/Microsoft-Exchange-2019-SSRF-Arbitrary-File-Write.html
packetstormsecurity.com/files/161938/Microsoft-Exchange-ProxyLogon-Remote-Code-Execution.html
packetstormsecurity.com/files/162610/Microsoft-Exchange-2019-Unauthenticated-Email-Download.html
packetstormsecurity.com/files/162736/Microsoft-Exchange-ProxyLogon-Collector.html
portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-26855
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CVSS3
9.1
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N/E:F/RL:O/RC:C
AI Score
9.4
Confidence
High
EPSS
0.975
Percentile
100.0%
Related for CVELIST:CVE-2021-26855