CVE-2023-23399

highpriority · track · 11EPSS 0.025 · 85 %ileexploit · PoCEURUUS

grimoire priorityP1 · Urgent

Exploitable?

Public exploit

1 exploit · PoC

Likely / severe?

2.53% (85th) EPSS

CVSS 7.8 · high

Is it mine?

71 products

Check your exposure

Who says so?

4 sources

cnnvd · enisa_euvd · fstec_bdu · msrc_csaf

EPSS · scored 2026-10-27

Microsoft Excel Remote Code Execution Vulnerability

remediations

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

A vendor fix is available.

FixedMicrosoft 365 Apps for Enterprise for 32-bit Systemsmsrc_csaf
https://aka.ms/OfficeSecurityReleases:Security Update:https://docs.microsoft.com/en-us/officeupdates/microsoft365-apps-security-updates
https://docs.microsoft.com/en-us/officeupdates/microsoft365-apps-security-updates
FixedMicrosoft 365 Apps for Enterprise for 64-bit Systemsmsrc_csaf
https://aka.ms/OfficeSecurityReleases:Security Update:https://docs.microsoft.com/en-us/officeupdates/microsoft365-apps-security-updates
https://docs.microsoft.com/en-us/officeupdates/microsoft365-apps-security-updates
FixedMicrosoft Excel 2013 RT Service Pack 1msrc_csaf
15.0.5537.1000:Security Update:https://support.microsoft.com/help/5002348
https://support.microsoft.com/help/5002348
FixedMicrosoft Excel 2013 Service Pack 1 (32-bit editions)msrc_csaf
15.0.5537.1000:Security Update:https://support.microsoft.com/help/5002348
https://support.microsoft.com/help/5002348
FixedMicrosoft Excel 2013 Service Pack 1 (64-bit editions)msrc_csaf
15.0.5537.1000:Security Update:https://support.microsoft.com/help/5002348
https://support.microsoft.com/help/5002348
FixedMicrosoft Excel 2016 (32-bit edition)msrc_csaf
16.0.5387.1000:Security Update:https://support.microsoft.com/help/5002351
https://support.microsoft.com/help/5002351
FixedMicrosoft Excel 2016 (64-bit edition)msrc_csaf
16.0.5387.1000:Security Update:https://support.microsoft.com/help/5002351
https://support.microsoft.com/help/5002351
FixedMicrosoft Office 2013 RT Service Pack 1msrc_csaf
15.0.5537.1000:Security Update:https://support.microsoft.com/help/5002198
https://support.microsoft.com/help/5002198
FixedMicrosoft Office 2013 Service Pack 1 (32-bit editions)msrc_csaf
15.0.5537.1000:Security Update:https://support.microsoft.com/help/5002198
https://support.microsoft.com/help/5002198
FixedMicrosoft Office 2013 Service Pack 1 (64-bit editions)msrc_csaf
15.0.5537.1000:Security Update:https://support.microsoft.com/help/5002198
https://support.microsoft.com/help/5002198
FixedMicrosoft Office 2016 (32-bit edition)msrc_csaf
16.0.5387.1000:Security Update:https://support.microsoft.com/kb/5002197
https://support.microsoft.com/kb/5002197
FixedMicrosoft Office 2016 (64-bit edition)msrc_csaf
16.0.5387.1000:Security Update:https://support.microsoft.com/kb/5002197
https://support.microsoft.com/kb/5002197
FixedMicrosoft Office 2019 for 32-bit editionsmsrc_csaf
https://aka.ms/OfficeSecurityReleases:Security Update:https://docs.microsoft.com/en-us/officeupdates/microsoft365-apps-security-updates
https://docs.microsoft.com/en-us/officeupdates/microsoft365-apps-security-updates
FixedMicrosoft Office 2019 for 64-bit editionsmsrc_csaf
https://aka.ms/OfficeSecurityReleases:Security Update:https://docs.microsoft.com/en-us/officeupdates/microsoft365-apps-security-updates
https://docs.microsoft.com/en-us/officeupdates/microsoft365-apps-security-updates
FixedMicrosoft Office 2019 for Macmsrc_csaf
16.71.23031200:Security Update:https://go.microsoft.com/fwlink/p/?linkid=831049
https://go.microsoft.com/fwlink/p/?linkid=831049
FixedMicrosoft Office LTSC 2021 for 32-bit editionsmsrc_csaf
https://aka.ms/OfficeSecurityReleases:Security Update:https://docs.microsoft.com/en-us/officeupdates/microsoft365-apps-security-updates
https://docs.microsoft.com/en-us/officeupdates/microsoft365-apps-security-updates
FixedMicrosoft Office LTSC 2021 for 64-bit editionsmsrc_csaf
https://aka.ms/OfficeSecurityReleases:Security Update:https://docs.microsoft.com/en-us/officeupdates/microsoft365-apps-security-updates
https://docs.microsoft.com/en-us/officeupdates/microsoft365-apps-security-updates
FixedMicrosoft Office LTSC for Mac 2021msrc_csaf
16.71.23031200:Security Update:https://go.microsoft.com/fwlink/p/?linkid=831049
https://go.microsoft.com/fwlink/p/?linkid=831049
FixedMicrosoft Office Online Servermsrc_csaf
16.0.10396.20000:Security Update:https://support.microsoft.com/help/5002356
https://support.microsoft.com/help/5002356
FixedMicrosoft Office Web Apps Server 2013 Service Pack 1msrc_csaf
15.0.5537.1000:Security Update:https://support.microsoft.com/kb/5002362
https://support.microsoft.com/kb/5002362

cvss

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

7.8

010

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

v3.17.8highAV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:Hsecondary · FSTEC (BDU) RU

v3.17.8highCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:Csecondary · ENISA EU

v3.17.8highCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:Hsecondary · secure@microsoft.com USexploitability 1.8 · impact 5.9

v3.17.4highCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:Psecondary · CVSS-BT (t0sche)

v3.17.8highCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:Csecondary · Microsoft Security Response Center US

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-125USCWE-125USCWE-20US

exploits (1)

Public proof-of-concept and weaponised exploit code.

EDB-51328Microsoft Excel 365 MSO (Version 2302 Build 16.0.16130.20186) 64-bit - Remote Code Execution (RCE)PoC · exploit_db

affected products (71)

Products and version ranges known to be affected.

Microsoft Microsoft 365 Apps for Enterprise16.0.1 → https://aka.ms/OfficeSecurityReleasesenisa_euvdEU
Microsoft Microsoft Excel 2013 Service Pack 115.0.0.0 → 15.0.5537.1000enisa_euvdEU
Microsoft Microsoft Excel 201616.0.0.0 → 16.0.5387.1000enisa_euvdEU
Microsoft Microsoft Office 2013 Service Pack 115.0.0 → 15.0.5537.1000enisa_euvdEU
Microsoft Microsoft Office 201616.0.0 → 16.0.5387.1000enisa_euvdEU
Microsoft Microsoft Office 201919.0.0 → https://aka.ms/OfficeSecurityReleasesenisa_euvdEU
Microsoft Microsoft Office 2019 for Mac16.0.0 → 16.71.23031200enisa_euvdEU
Microsoft Microsoft Office LTSC 202116.0.1 → https://aka.ms/OfficeSecurityReleasesenisa_euvdEU
Microsoft Microsoft Office LTSC for Mac 202116.0.1 → 16.71.23031200enisa_euvdEU
Microsoft Microsoft Office Online Server16.0.1 → 16.0.10396.20000enisa_euvdEU
Microsoft Microsoft Office Web Apps Server 2013 Service Pack 115.0.1 → 15.0.5537.1000enisa_euvdEU
Microsoft Corp Microsoft 365 Apps for Enterpriseall versionsfstec_bduRU
Microsoft Corp Microsoft Excel 2013 RT Service Pack 1all versionsfstec_bduRU
Microsoft Corp Microsoft Excel 2013 Service Pack 1all versionsfstec_bduRU
Microsoft Corp Microsoft Excel 2016all versionsfstec_bduRU
Microsoft Corp Microsoft Office 2013 RT Service Pack 1all versionsfstec_bduRU
Microsoft Corp Microsoft Office 2013 Service Pack 1all versionsfstec_bduRU
Microsoft Corp Microsoft Office 2016all versionsfstec_bduRU
Microsoft Corp Microsoft Office 2019all versionsfstec_bduRU
Microsoft Corp Microsoft Office LTSC 2021all versionsfstec_bduRU

showing 20 of 71

advisories (1)

Vendor and ecosystem advisories describing this.

msrc_CVE-2023-23399Microsoft Excel Remote Code Execution Vulnerability2023-03-14csaf · 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 msrc_csaf NVD CVE.org MITRE

published 2023-03-14modified 2026-06-17

references (6)

External citations — patches, advisories, analysis.

scry

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