CVE-2026-62687

Local information disclosure via improper link resolution

Published Oct 13, 2026 · Updated Oct 13, 2026

Link following in Windows Backup Engine on Microsoft Windows 10 and 11 allows local users to disclose information via file access. The engine improperly resolves links before accessing files; the affected operation, link type, and disclosed data are not described in the available CNA record. Exploitation requires local low-privilege access without user interaction, and the published assessment identifies disclosure rather than data modification or service interruption.

CVSS severityUnavailable
Unscored
EPSS probability0.45%
Next 30 days · Oct 19, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Link following in Windows Backup Engine on Microsoft Windows 10 and 11 allows local users to disclose information via file access. The engine improperly resolves links before accessing files; the affected operation, link type, and disclosed data are not described in the available CNA record. Exploitation requires local low-privilege access without user interaction, and the published assessment identifies disclosure rather than data modification or service interruption.

The record

CVE
CVE-2026-62687
Published
Oct 13, 2026
Updated
Oct 13, 2026
Vendor
Microsoft Corporation
Product
Windows 11, version 25H2
Classifications
CWE-59
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Oct 13, 2026CVE publishedPublication date reported by the CVE source.
  2. Oct 13, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=10.0.26200.0 <10.0.26200.9711

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

Microsoft Corporation · Windows 11, version 25H2version=10.0.26200.0 <10.0.26200.9711
Microsoft Corporation · Windows 11, version 24H2version=10.0.26100.0 <10.0.26100.9711
Microsoft Corporation · Windows 10 Version 21H2version=10.0.19044.0 <10.0.19044.7807
Microsoft Corporation · Windows 11, version 26H2version=10.0.26300.0 <10.0.26300.9711
Microsoft Corporation · Windows 10 Version 22H2version=10.0.19045.0 <10.0.19044.7807
Microsoft Corporation · Windows 11, version 26H1version=10.0.28000.0 <10.0.28000.3231
Microsoft Corporation · Windows 11 Version 23H2version=10.0.22631.0 <10.0.22631.7652

Published CVSS scores

No CVSS assessment is available in this record.

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Activity data is delayed. The latest report is Sep 28, 2026.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 22, 2026Sep 28, 2026
Latest reporting daySep 28, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-59Improper Link Resolution Before File Access ('Link Following')

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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