Local information disclosure via cleartext transmission
Published Jul 14, 2026 · Updated Jul 14, 2026
Information disclosure in Microsoft Windows AFD.sys allows local users with low privileges to read sensitive data transmitted in cleartext. Microsoft identifies the affected driver and CWE-319 but has not published the specific communication channel, code path, or sensitive data involved. Exploitation requires local authenticated access; the reported consequence is confidentiality loss without data modification or service interruption.
Summary
What happened
Information disclosure in Microsoft Windows AFD.sys allows local users with low privileges to read sensitive data transmitted in cleartext. Microsoft identifies the affected driver and CWE-319 but has not published the specific communication channel, code path, or sensitive data involved. Exploitation requires local authenticated access; the reported consequence is confidentiality loss without data modification or service interruption.
The record
- CVE
- CVE-2026-34346
- Published
- Jul 14, 2026
- Updated
- Jul 14, 2026
- Vendor
- Microsoft
- Product
- Windows Server 2019
- Classifications
- CWE-319
- Attack vector
- local
- Privileges
- authenticated
Timeline
How it unfolded
- Jul 14, 2026CVE publishedPublication date reported by the CVE source.
- Jul 14, 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.
- Affected versionversion=10.0.17763.0 <10.0.17763.9020
What conditions does exploitation require?
What is affected?
Published CVSS scores
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.
Weakness, pattern, technique
Public exploit references
No public exploit references are available in this record.
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Technologies
Your stack
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Your stack
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