CVE-2026-65815

highpriority · track · 1EPSS 0.017 · 77 %ileDEEUNLUS

grimoire priorityP2 · Scheduled

Exploitable?

—

no known exploitation

Likely / severe?

1.69% (77th) EPSS

CVSS 8.8 · high

Is it mine?

16 products

Check your exposure

Who says so?

6 sources

cnnvd · enisa_euvd · cert_bund · msrc_csaf

EPSS · scored 2026-10-27

Deserialization of untrusted data in Microsoft Dynamics 365 (on-premises) allows an authorized attacker to execute code over a network.

remediations

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

A vendor fix is available.

FixedMicrosoft Dynamics 365 (on-premises) version 9.1msrc_csaf
9.1.0047.0006:Security Update:https://support.microsoft.com/en-US/servicing/dynamics/crm/microsoft-dynamics-365-on-premises-cumulative-updates
https://support.microsoft.com/en-US/servicing/dynamics/crm/microsoft-dynamics-365-on-premises-cumulative-updates

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

v3.18.8highCVSS: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

v3.18.1highCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:Usecondary · 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 · NCSC-NL NL

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-502USCWE-502USCWE-502US

affected products (16)

Products and version ranges known to be affected.

Microsoft Dynamics 365 (on-premises) version 9.1all versionscert_bundDEcpe:/a:microsoft:dynamics_365:%28on-premises%29_version_9.1
Microsoft Dynamics 365 Business Central 2024 Release Wave 2all versionscert_bundDEcpe:/a:microsoft:dynamics_365:business_central_2024_release_wave_2
Microsoft Dynamics 365 Business Central 2026 Release Wave 1all versionscert_bundDEcpe:/a:microsoft:dynamics_365:business_central_2026_release_wave_1
Microsoft Dynamics 365 Business Central Release Wave 1 2025all versionscert_bundDEcpe:/a:microsoft:dynamics_365:business_central_release_wave_1_2025
Microsoft Dynamics 365 Business Central Release Wave 2 2025all versionscert_bundDEcpe:/a:microsoft:dynamics_365:business_central_release_wave_2_2025
Microsoft Microsoft Dynamics 365 (on-premises) version 9.19.0 → 9.1.0047.0006enisa_euvdEU
Microsoft Microsoft Dynamics 365 (on-premises) version 9.1all versionsfixedmsrc_csafUS
Microsoft Microsoft Dynamics 365 (on-premises) version 9.1< 9.1.0047.0006msrc_csafUS
Microsoft Microsoft Dynamics 365 (on-premises) version 9.1≤ vers:unknown/*ncsc_nlNL
Microsoft Microsoft Dynamics 365 Business Central 2024 Release Wave 2≤ vers:unknown/*ncsc_nlNL
Microsoft Microsoft Dynamics 365 Business Central 2026 Release Wave 1≤ vers:unknown/*ncsc_nlNL
Microsoft Microsoft Dynamics 365 Business Central Release Wave 1 2025≤ vers:unknown/*ncsc_nlNL
Microsoft Microsoft Dynamics 365 Business Central Release Wave 2 2025≤ vers:unknown/*ncsc_nlNL
Microsoft Microsoft Power Apps≤ vers:unknown/*ncsc_nlNL
Microsoft Power Apps≤ vers:unknown/*ncsc_nlNL
microsoft dynamics 3659.1 → 9.1.47.06nvdUScpe:2.3:a:microsoft:dynamics_365:*:*:*:*:*:*:*:*

advisories (3)

Vendor and ecosystem advisories describing this.

NCSC-2026-0288Kwetsbaarheden verholpen in Microsoft DynamicsNL2026-08-11csaf · ncsc_nlNL
Microsoft heeft kwetsbaarheden verholpen in Dynamics, zowel online als on-premise.
WID-SEC-W-2026-2783Microsoft Dynamics: Mehrere SchwachstellenDeutsch2026-08-11csaf · cert_bundDE
Ein entfernter, authentisierter Angreifer kann mehrere Schwachstellen in Microsoft Dynamics 365 ausnutzen, um beliebigen Programmcode auszuführen oder vertrauliche Informationen offenzulegen.
msrc_CVE-2026-65815Microsoft Dynamics 365 On-Premises Remote Code Execution Vulnerability2026-08-11csaf · msrc_csafUS
To determine the support lifecycle for your software, see the Microsoft Support Lifecycle: https://support.microsoft.com/lifecycle

also known as (3)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd cert_bund msrc_csaf ncsc_nl nvd NVD CVE.org MITRE

published 2026-08-11modified 2026-10-24

references (3)

External citations — patches, advisories, analysis.

scry

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