CVE-2026-105726

mediumpriority · track · 22EPSS 0.004 · 37 %ileFRRUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

0.43% (37th) EPSS

CVSS 5.5 · medium

Is it mine?

3 products

Check your exposure

Who says so?

3 sources

fstec_bdu · msrc_csaf · certfr

EPSS · scored 2026-10-27

Out-of-bounds read in Microsoft Defender allows an authorized attacker to disclose information locally.

remediations

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

A vendor fix is available.

FixedMicrosoft Defender for Endpoint for Windowsmsrc_csaf
4.18.26060.3008:Security Update:https://learn.microsoft.com/en-us/defender-endpoint/microsoft-defender-endpoint-releases#windows-antivirus--june-2026--platform-418260603008--engine-11260603008
https://learn.microsoft.com/en-us/defender-endpoint/microsoft-defender-endpoint-releases#windows-antivirus--june-2026--platform-418260603008--engine-11260603008

cvss

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

5.5

010

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

v3.15.5mediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:Nprimary · secure@microsoft.com USexploitability 1.8 · impact 3.6

v3.15.5mediumAV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:Nsecondary · FSTEC (BDU) RU

v3.15.1mediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N/E:Usecondary · CVSS-BT (t0sche)

v3.15.5mediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/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.

Trackcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-125USCWE-125USCWE-125USCWE-125USCWE-20US

affected products (3)

Products and version ranges known to be affected.

Microsoft Corp Microsoft Defender for Endpoint≤ 4.18.26060.3008fstec_bduRU
Microsoft Microsoft Defender for Endpoint for Windowsall versionsfixedmsrc_csafUS
Microsoft Microsoft Defender for Endpoint for Windows< 4.18.26060.3008msrc_csafUS

advisories (2)

Vendor and ecosystem advisories describing this.

msrc_CVE-2026-105726Microsoft Defender Information Disclosure Vulnerability2026-10-13csaf · msrc_csafUS
To determine the support lifecycle for your software, see the Microsoft Support Lifecycle: https://support.microsoft.com/lifecycle
CERTFR-2026-AVI-1314Multiples vulnérabilités dans Microsoft WindowsFrançais2026-10-14vendor · certfrFR

also known as (1)

Other names and identifiers for this entity.

BDU:2026-17089 fstec_bdu

sources

Which sources assert this record, and when.

fstec_bdu msrc_csaf certfr NVD CVE.org MITRE

published 2026-10-13modified 2026-10-21

references (1) nvd

External citations — patches, advisories, analysis.

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-105726

scry

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