Vulnerability-Lookup

MSRC_CVE-2021-31196

Vulnerability from csaf_microsoft - Published: 2021-07-13 07:00 - Updated: 2021-07-13 07:00

Summary

Microsoft Exchange Server Remote Code Execution Vulnerability

Severity

Important

Notes

Additional Resources: To determine the support lifecycle for your software, see the Microsoft Support Lifecycle: https://support.microsoft.com/lifecycle

Disclaimer: The information provided in the Microsoft Knowledge Base is provided \"as is\" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply.

Customer Action: Required. The vulnerability documented by this CVE requires customer action to resolve.

CVE-2021-31196

7.2 (High)


                
                  CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C

Affected products

Fixed 5 products

Product	Identifier	Version	Remediation
Microsoft Exchange Server 2013 Cumulative Update 23 15.00.1497.023 Microsoft Exchange Server 2013 Cumulative Update 23		15.00.1497.023
Microsoft Exchange Server 2019 Cumulative Update 9 15.02.0858.015 Microsoft Exchange Server 2019 Cumulative Update 9		15.02.0858.015
Microsoft Exchange Server 2016 Cumulative Update 20 15.01.2242.012 Microsoft Exchange Server 2016 Cumulative Update 20		15.01.2242.012
Microsoft Exchange Server 2016 Cumulative Update 21 15.01.2308.014 Microsoft Exchange Server 2016 Cumulative Update 21		15.01.2308.014
Microsoft Exchange Server 2019 Cumulative Update 10 15.02.0922.013 Microsoft Exchange Server 2019 Cumulative Update 10		15.02.0922.013

Known affected 5 products

Product	Version	Remediation
Microsoft Exchange Server 2019 Cumulative Update 10 <15.02.0922.013 Microsoft Exchange Server 2019 Cumulative Update 10	<15.02.0922.013	Vendor Fix fix
Microsoft Exchange Server 2016 Cumulative Update 21 <15.01.2308.014 Microsoft Exchange Server 2016 Cumulative Update 21	<15.01.2308.014	Vendor Fix fix
Microsoft Exchange Server 2016 Cumulative Update 20 <15.01.2242.012 Microsoft Exchange Server 2016 Cumulative Update 20	<15.01.2242.012	Vendor Fix fix
Microsoft Exchange Server 2019 Cumulative Update 9 <15.02.0858.015 Microsoft Exchange Server 2019 Cumulative Update 9	<15.02.0858.015	Vendor Fix fix
Microsoft Exchange Server 2013 Cumulative Update 23 <15.00.1497.023 Microsoft Exchange Server 2013 Cumulative Update 23	<15.00.1497.023	Vendor Fix fix

Threats

Impact Remote Code Execution

Exploit Status Publicly Disclosed:No;Exploited:No;Latest Software Release:Exploitation Less Likely;Older Software Release:Exploitation Less Likely

References

7 references

URL	Category
https://msrc.microsoft.com/update-guide/vulnerabi…	self
https://msrc.microsoft.com/csaf/advisories/2021/m…	self
https://www.microsoft.com/en-us/msrc/exploitabili…	external
https://support.microsoft.com/lifecycle	external
https://www.first.org/cvss	external
https://msrc.microsoft.com/update-guide/vulnerabi…	self
https://msrc.microsoft.com/csaf/advisories/2021/m…	self

Acknowledgments

<a href="https://twitter.com/orange_8361">Orange Tsai (@orange_8361)</a> with <a href="https://devco.re/">DEVCORE</a>

JSON

To clipboard

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            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "environmentalScore": 0.0,
            "exploitCodeMaturity": "UNPROVEN",
            "integrityImpact": "HIGH",
            "privilegesRequired": "HIGH",
            "remediationLevel": "OFFICIAL_FIX",
            "reportConfidence": "CONFIRMED",
            "scope": "UNCHANGED",
            "temporalScore": 6.3,
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C",
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        }
      ],
      "title": "Microsoft Exchange Server Remote Code Execution Vulnerability"
    }
  ]
}

CVE-2021-31196 (GCVE-0-2021-31196)

Vulnerability from cvelistv5 – Published: 2021-07-14 17:53 – Updated: 2026-08-10 15:10

Title

Microsoft Exchange Server Remote Code Execution Vulnerability

Summary

Microsoft Exchange Server Remote Code Execution Vulnerability

Severity

7.2 (High)


                        
                          CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C

SSVC

Exploitation: active Automatable: yes Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2025-01-28 16:51 UTC

CWE

Remote Code Execution
CWE-noinfo Not enough information

Assigner

microsoft mitre root Scorecard

References

3 references

URL	Tags
https://msrc.microsoft.com/update-guide/vulnerabi…	vendor-advisorypatch
https://portal.msrc.microsoft.com/en-US/security-…	x_refsource_MISCx_transferred
https://www.cisa.gov/known-exploited-vulnerabilit…	government-resource

Impacted products

5 products

Vendor	Product	Version
Microsoft	Microsoft Exchange Server 2013 Cumulative Update 23	Affected: 15.00.0 , < 15.00.1497.023 (custom)
Microsoft	Microsoft Exchange Server 2016 Cumulative Update 20	Affected: 15.01.0 , < 15.01.2242.012 (custom)
Microsoft	Microsoft Exchange Server 2016 Cumulative Update 21	Affected: 15.01.0 , < 15.01.2308.014 (custom)
Microsoft	Microsoft Exchange Server 2019 Cumulative Update 10	Affected: 15.02.0 , < 15.02.0922.013 (custom)
Microsoft	Microsoft Exchange Server 2019 Cumulative Update 9	Affected: 15.02.0 , < 15.02.0858.015 (custom)

Date Public

2021-07-13 14:00

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
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        "providerMetadata": {
          "dateUpdated": "2024-08-03T22:55:53.341Z",
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Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
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Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

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MSRC_CVE-2021-31196

CVE-2021-31196 (GCVE-0-2021-31196)

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