CVE-2026-59118

criticalpriority · track · 0EPSS 0.007 · 54 %ileDEEUNLRUUS

grimoire priorityP2 · Scheduled

Exploitable?

—

no known exploitation

Likely / severe?

0.72% (54th) EPSS

CVSS 9.3 · critical

Is it mine?

12 products

Check your exposure

Who says so?

7 sources

cnnvd · enisa_euvd · fstec_bdu · cert_bund

EPSS · scored 2026-10-27

Improper authorization in Copilot Cowork allows an unauthorized attacker to elevate privileges over a network.

cvss

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

9.3

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · high–critical · 8.5–9.3

v3.19.3criticalAV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:Nsecondary · FSTEC (BDU) RU

v3.19.3criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N/E:U/RL:O/RC:Csecondary · ENISA EU

v3.19.3criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:Nsecondary · secure@microsoft.com USexploitability 2.8 · impact 5.8

v3.18.5highCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N/E:Usecondary · CVSS-BT (t0sche)

v3.19.3criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:Nsecondary · NCSC-NL NL

v3.19.3criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N/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-285USCWE-285USCWE-285USCWE-285US

affected products (12)

Products and version ranges known to be affected.

Microsoft Power Appsall versionscert_bundDEcpe:/a:microsoft:power_apps:-
Microsoft Copilot Coworkall versionsenisa_euvdEU
Microsoft Corp Microsoft Power Appsall versionsfstec_bduRU
Microsoft Copilot Coworkall versionsfixedmsrc_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 power appsall versionsnvdUScpe:2.3:a:microsoft:power_apps:*:*:*:*:*:*:*:*

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-2026-2688Microsoft Power Apps: Schwachstelle ermöglicht PrivilegieneskalationDeutsch2026-08-06csaf · cert_bundDE
Ein entfernter, anonymer Angreifer kann eine Schwachstelle in Microsoft Power Apps ausnutzen, um seine Privilegien zu erhöhen.
msrc_CVE-2026-59118Copilot Cowork Elevation of Privilege Vulnerability2026-08-06csaf · 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 ncsc_nl nvd NVD CVE.org MITRE

published 2026-08-07modified 2026-10-24

references (3)

External citations — patches, advisories, analysis.

scry

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