CVE-2023-41763

mediumpriority · act · 90OT risk · criticalKEV · exploitedEPSS 0.905 · 100 %ileDEEURUUS

grimoire priorityP0 · Act now

Exploitable?

Yes · in the wild

CISA KEV

Likely / severe?

90.5% (100th) EPSS

CVSS 5.3 · medium

Is it mine?

19 products

Check your exposure

Who says so?

6 sources

cnnvd · enisa_euvd · fstec_bdu · cert_bund

added 2023-10-10remediate by 2023-10-31

required action Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

EPSS · scored 2026-10-25

Microsoft Skype for Business Privilege Escalation Vulnerability

Skype for Business Elevation of Privilege Vulnerability

remediations

Vendor fix, mitigation, or workaround guidance, as published by each source.

A vendor fix is available.

FixedSkype for Business Server 2015 CU13msrc_csaf
6.0.9319.869:Security Update:https://support.microsoft.com/help/3061064
https://support.microsoft.com/help/3061064
FixedSkype for Business Server 2019 CU7msrc_csaf
7.0.246.530:Security Update:https://support.microsoft.com/help/4470124
https://support.microsoft.com/help/4470124

cvss

Technical severity, 0–10. One row per scoring source.

5.3

010

base score 0–10 · higher = more severe · hover a vector to decode

v3.15.3mediumAV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:Nsecondary · FSTEC (BDU) RU

v3.15.3mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N/E:P/RL:O/RC:Csecondary · ENISA EU

v3.15.3mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:Nsecondary · secure@microsoft.com USexploitability 3.9 · impact 1.4

v3.15.3mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N/E:Hsecondary · CVSS-BT (t0sche)

v3.15.3mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N/E:P/RL:O/RC:Csecondary · Microsoft Security Response Center US

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Exploitation: active · Automatable: yes · Technical Impact: partialcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-918USprimaryCWE-200USCWE-918US

affected products (19)

Products and version ranges known to be affected.

Microsoft 365 Appsall versionscert_bundDEcpe:/a:microsoft:365_apps:-
Microsoft Office 2019all versionscert_bundDEcpe:/a:microsoft:office_2019:-
Microsoft Office 2019 for Macall versionscert_bundDEcpe:/a:microsoft:office_2019_for_mac:-
Microsoft Office LTSC 2021all versionscert_bundDEcpe:/a:microsoft:office:ltsc_2021
Microsoft Office LTSC for Mac 2021all versionscert_bundDEcpe:/a:microsoft:office:ltsc_for_mac_2021
Microsoft Office for Androidall versionscert_bundDEcpe:/a:microsoft:office:for_android
Microsoft Office for Universalall versionscert_bundDEcpe:/a:microsoft:office:for_universal
Microsoft Skype for Business Server 2015 CU13all versionscert_bundDEcpe:/a:microsoft:skype:for_business_server_2015_cu13
Microsoft Skype for Business Server 2019 CU7all versionscert_bundDEcpe:/a:microsoft:skype:for_business_server_2019_cu7
Microsoft Skype for Business Server 2015 CU139319.0 → 6.0.9319.869enisa_euvdEU
Microsoft Skype for Business Server 2019 CU72046.0 → 7.0.246.530enisa_euvdEU
Microsoft Corp Skype for Business Server≤ 2015 CU13fstec_bduRU
Microsoft Corp Skype for Business Server≤ 2019 CU7fstec_bduRU
Skype for Business Server 2015 CU13all versionsfixedmsrc_csafUS
Skype for Business Server 2015 CU13< 6.0.9319.869msrc_csafUS
Skype for Business Server 2019 CU7all versionsfixedmsrc_csafUS
Skype for Business Server 2019 CU7< 7.0.246.530msrc_csafUS
microsoft skype for business server= 2015nvdUScpe:2.3:a:microsoft:skype_for_business_server:*:*:*:*:*:*:*:*
microsoft skype for business server= 2019nvdUScpe:2.3:a:microsoft:skype_for_business_server:*:*:*:*:*:*:*:*

advisories (2)

Vendor and ecosystem advisories describing this.

WID-SEC-W-2023-2608Microsoft Office: Mehrere SchwachstellenDeutsch2023-10-10csaf · cert_bundDE
Ein entfernter, anonymer, authentisierter oder lokaler Angreifer kann mehrere Schwachstellen in Microsoft Office ausnutzen, um seine Privilegien zu erhöhen und beliebigen Code auszuführen.
msrc_CVE-2023-41763Skype for Business Elevation of Privilege Vulnerability2023-10-10csaf · msrc_csafUS
To determine the support lifecycle for your software, see the Microsoft Support Lifecycle: https://support.microsoft.com/lifecycle

also known as (4)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd fstec_bdu cert_bund msrc_csaf nvd NVD CVE.org MITRE

published 2023-10-10modified 2026-06-17

related (4,168)

Related entries.

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+4163 more

references (6)

External citations — patches, advisories, analysis.

scry

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