Overview
- Description
- Microsoft Exchange Server Security Feature Bypass Vulnerability
- Source
- secure@microsoft.com
- NVD status
- Analyzed
Social media
- Hype score
- Not currently trending
Risk scores
CVSS 3.1
- Type
- Primary
- Base score
- 6.6
- Impact score
- 5.9
- Exploitability score
- 0.7
- Vector string
- CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H
- Severity
- MEDIUM
CVSS 2.0
- Type
- Primary
- Base score
- 6.5
- Impact score
- 6.4
- Exploitability score
- 8
- Vector string
- AV:N/AC:L/Au:S/C:P/I:P/A:P
Known exploits
Data from CISA
- Vulnerability name
- Microsoft Exchange Server Security Feature Bypass Vulnerability
- Exploit added on
- Nov 3, 2021
- Exploit action due
- Nov 17, 2021
- Required action
- Apply updates per vendor instructions.
Weaknesses
- nvd@nist.gov
- CWE-434
Configurations
[
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:a:microsoft:exchange_server:2013:cumulative_update_23:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "DA166F2A-D83B-4D50-AD0B-668D813E0585"
},
{
"criteria": "cpe:2.3:a:microsoft:exchange_server:2016:cumulative_update_19:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "28FCA0E8-7D27-4746-9731-91B834CA3E64"
},
{
"criteria": "cpe:2.3:a:microsoft:exchange_server:2016:cumulative_update_20:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "19C1EE0C-B8DD-4B91-BE4B-1C42D72FB718"
},
{
"criteria": "cpe:2.3:a:microsoft:exchange_server:2019:cumulative_update_8:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "44ECF39A-1DE1-4870-A494-06A53494338D"
},
{
"criteria": "cpe:2.3:a:microsoft:exchange_server:2019:cumulative_update_9:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "71CDF29B-116B-4DE2-AFD0-B62477FF0AEB"
}
],
"operator": "OR"
}
]
}
]