CVE-2026-42902

highpriority · track · 0EPSS 0.003 · 22 %ileDEEURUUS

grimoire priorityP2 · Scheduled

Exploitable?

—

no known exploitation

Likely / severe?

0.29% (22nd) EPSS

CVSS 7.8 · high

Is it mine?

10 products

Check your exposure

Who says so?

6 sources

cnnvd · enisa_euvd · fstec_bdu · cert_bund

EPSS · scored 2026-10-27

Improper authorization in Microsoft PowerToys allows an authorized attacker to elevate privileges locally.

remediations

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

A vendor fix is available.

FixedMicrosoft PowerToysmsrc_csaf
v0.99.1:Security Update:https://github.com/microsoft/PowerToys/releases/tag/v0.99.1
https://github.com/microsoft/PowerToys/releases/tag/v0.99.1

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:L/UI:N/S:U/C:H/I:H/A:Hsecondary · FSTEC (BDU) RU

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

v3.17.1highCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:Usecondary · CVSS-BT (t0sche)

v3.17.8highCVSS:3.1/AV:L/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-285USCWE-285USCWE-285US

affected products (10)

Products and version ranges known to be affected.

Microsoft 365 Copilot 365 Copilot's Business Chatall versionscert_bundDEcpe:/a:microsoft:365_copilot:-
Microsoft Apps Bing Searchall versionscert_bundDEcpe:/a:microsoft:apps:bing_search
Microsoft Apps PC Managerall versionscert_bundDEcpe:/a:microsoft:apps:pc_manager
Microsoft Apps Windows Graphics Componentall versionscert_bundDEcpe:/a:microsoft:apps:windows_graphics_component
Microsoft PowerToysall versionscert_bundDEcpe:/a:microsoft:powertoys:-
Microsoft Microsoft PowerToys0.1 → v0.99.1enisa_euvdEU
Microsoft Corp Microsoft PowerToys≤ 0.99.1fstec_bduRU
Microsoft Microsoft PowerToysall versionsfixedmsrc_csafUS
Microsoft Microsoft PowerToys< v0.99.1msrc_csafUS
microsoft powertoys< 0.99.1nvdUScpe:2.3:a:microsoft:powertoys:*:*:*:*:*:*:*:*

advisories (2)

Vendor and ecosystem advisories describing this.

WID-SEC-W-2026-1843Microsoft Apps: Mehrere SchwachstellenDeutsch2026-06-09csaf · cert_bundDE
Ein Angreifer kann mehrere Schwachstellen in Microsoft 365 Copilot, Microsoft PowerToys und verschiedenen Microsoft Apps ausnutzen, um Administratorrechte zu erlangen, beliebigen Code auszuführen, Sicherheitsmaßnahmen zu umgehen, Spoofing-Angriffe durchzuführen oder vertrauliche Informationen offenzulegen.
msrc_CVE-2026-42902Microsoft PowerToys Elevation of Privilege Vulnerability2026-06-09csaf · 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 2026-06-09modified 2026-07-23

references (4)

External citations — patches, advisories, analysis.

scry

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