CVE-2023-32031

highpriority · track · 39EPSS 0.815 · 100 %ileexploit · PoCDEEURUUS

grimoire priorityP1 · Urgent

Exploitable?

Public exploit

1 exploit · PoC

Likely / severe?

81.5% (100th) EPSS

CVSS 8.8 · high

Is it mine?

17 products

Check your exposure

Who says so?

6 sources

cnnvd · enisa_euvd · fstec_bdu · cert_bund

EPSS · scored 2026-10-27

Microsoft Exchange Server Remote Code Execution Vulnerability

remediations

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

A vendor fix is available.

FixedMicrosoft Exchange Server 2016 Cumulative Update 23msrc_csaf
15.01.2507.027:Security Update:https://support.microsoft.com/help/5025903
https://support.microsoft.com/help/5025903
FixedMicrosoft Exchange Server 2019 Cumulative Update 12msrc_csaf
15.02.1118.030:Security Update:https://support.microsoft.com/help/5026261
https://support.microsoft.com/help/5026261
FixedMicrosoft Exchange Server 2019 Cumulative Update 13msrc_csaf
15.02.1258.016:Security Update:https://support.microsoft.com/help/5026261
https://support.microsoft.com/help/5026261

cvss

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

8.8

010

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

v3.18.8highAV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:Hsecondary · FSTEC (BDU) RU

v3.18.8highCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:Csecondary · ENISA EU

v3.18.8highCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:Hsecondary · secure@microsoft.com USexploitability 2.8 · impact 5.9

v3.18.8highCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:Hsecondary · CVSS-BT (t0sche)

v3.18.8highCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:Csecondary · Microsoft Security Response Center US

ssvc

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

Exploitation: none · Automatable: no · Technical Impact: totalcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-20USCWE-502USCWE-502US

exploits (1)

Public proof-of-concept and weaponised exploit code.

Avento/CVE-2023-32031CVE-2023-32031 MS Exchange PowerShell backend RCEPoC · poc_in_github

affected products (17)

Products and version ranges known to be affected.

Microsoft Exchange Server 2016 Cumulative Update 23all versionscert_bundDEcpe:/a:microsoft:exchange_server_2016:cumulative_update_23
Microsoft Exchange Server 2019 Cumulative Update 12all versionscert_bundDEcpe:/a:microsoft:exchange_server_2019:cumulative_update_12
Microsoft Exchange Server 2019 Cumulative Update 13all versionscert_bundDEcpe:/a:microsoft:exchange_server_2019:cumulative_update_13
Microsoft Microsoft Exchange Server 2016 Cumulative Update 2315.01.0 → 15.01.2507.027enisa_euvdEU
Microsoft Microsoft Exchange Server 2019 Cumulative Update 1215.02.0 → 15.02.1118.030enisa_euvdEU
Microsoft Microsoft Exchange Server 2019 Cumulative Update 1315.02.0 → 15.02.1258.016enisa_euvdEU
Microsoft Corp Microsoft Exchange Server≤ 2016 Cumulative Update 23fstec_bduRU
Microsoft Corp Microsoft Exchange Server≤ 2019 Cumulative Update 13fstec_bduRU
Microsoft Corp Microsoft Exchange Server≤ 2019 Cumulative Update 12fstec_bduRU
Microsoft Exchange Server 2016 Cumulative Update 23all versionsfixedmsrc_csafUS
Microsoft Exchange Server 2016 Cumulative Update 23< 15.01.2507.027msrc_csafUS
Microsoft Exchange Server 2019 Cumulative Update 12all versionsfixedmsrc_csafUS
Microsoft Exchange Server 2019 Cumulative Update 12< 15.02.1118.030msrc_csafUS
Microsoft Exchange Server 2019 Cumulative Update 13all versionsfixedmsrc_csafUS
Microsoft Exchange Server 2019 Cumulative Update 13< 15.02.1258.016msrc_csafUS
microsoft exchange server= 2016nvdUScpe:2.3:a:microsoft:exchange_server:*:*:*:*:*:*:*:*
microsoft exchange server= 2019nvdUScpe:2.3:a:microsoft:exchange_server:*:*:*:*:*:*:*:*

advisories (2)

Vendor and ecosystem advisories describing this.

WID-SEC-W-2023-1445Microsoft Exchange Server: Mehrere Schwachstellen ermöglichen CodeausführungDeutsch2023-06-13csaf · cert_bundDE
Ein entfernter, authentisierter Angreifer kann mehrere Schwachstellen in Microsoft Exchange Server ausnutzen, um beliebigen Programmcode auszuführen.
msrc_CVE-2023-32031Microsoft Exchange Server Remote Code Execution Vulnerability2023-06-13csaf · 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 2023-06-14modified 2026-06-17

references (4)

External citations — patches, advisories, analysis.

scry

Attackers weaponise vulnerabilities like this against internet-exposed services. See what is exposed on your perimeter with a free passive scan.

Free scan