CVE-2021-26422 - Vulnerability Details - OpenCVE

Description

Skype for Business and Lync Remote Code Execution Vulnerability

Published: 2021-05-11

Score: 7.2 High

EPSS: 2.2% Low

KEV: No

Analysis

Analysis and contextual insights are available on OpenCVE Cloud.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions

Microsoft

Microsoft Lync Server 2013 CU10

affected

Version	Status	Constraints
`8308.0`	affected	< 8308.1144

Microsoft

Skype for Business Server 2019 CU5

affected

Version	Status	Constraints
`1.0`	affected	< 2046.369

Microsoft

Skype for Business Server 2015 CU11

affected

Version	Status	Constraints
`2015 CU11`	affected	< 9319.606

Configuration 1 [-]

OR	cpe:2.3:a:microsoft:lync_server:2013:cumulative_update_10::::::
	cpe:2.3:a:microsoft:skype_for_business_server:2015:cumulative_update_11::::::
	cpe:2.3:a:microsoft:skype_for_business_server:2019:cumulative_update_5::::::

No data.

No data available yet.

Remediation

No solution or workaround provided in the CVE record.

Additional remediation guidance may be available on OpenCVE Cloud.

Tracking

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Advisories

No advisories yet.

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required High

Scope Unchanged

Confidentiality Impact High

Integrity Impact High

Availability Impact High

User Interaction None

No CVSS v3.0

Access Vector Network

Access Complexity Low

Authentication Single

Confidentiality Impact Partial

Integrity Impact Partial

Availability Impact Partial

This CVE is not in the KEV list.

The EPSS score is 0.02219.

Key SSVC decision points have not yet been added.

References

Link	Providers
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-26422

History

No history.

Subscriptions

Microsoft Lync Server Skype For Business Server

MITRE

Status: PUBLISHED

Assigner: microsoft

Published: 2021-05-11T19:11:13.000Z

Updated: 2024-08-03T20:26:25.115Z

Reserved: 2021-01-29T00:00:00.000Z

Link: CVE-2021-26422

Vulnrichment

No data.

NVD

Status : Modified

Published: 2021-05-11T19:15:08.907

Modified: 2026-06-17T03:43:22.927

Link: CVE-2021-26422

Redhat

No data.

OpenCVE Enrichment

No data.

Weaknesses

NVD-CWE-noinfo

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