CVE-2026-34348
Windows Event Logging Service Information Disclosure Vulnerability
Protection mechanism failure in Windows Event Logging Service allows an authorized attacker to disclose information over a network.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- Low
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- None
- Availability
- None
Exploit likelihood
What each source reports
CVE List Score used
Windows Event Logging Service Information Disclosure Vulnerability
Protection mechanism failure in Windows Event Logging Service allows an authorized attacker to disclose information over a network.
- Record
CVE-2026-34348- CVSS 3.1
- 6.5 Medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C - Weakness
- CWE-693
- Updated
- 2026-11-02
EUVDEUVD-2026-43788
Protection mechanism failure in Windows Event Logging Service allows an authorized attacker to disclose information over a network.
- Record
EUVD-2026-43788- CVSS 3.1
- 6.5 Medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-2333-38mw-8777
Protection mechanism failure in Windows Event Logging Service allows an authorized attacker to...
Protection mechanism failure in Windows Event Logging Service allows an authorized attacker to disclose information over a network.
- Record
GHSA-2333-38mw-8777- CVSS 3.1
- 6.5 Medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N - Weakness
- CWE-693
- Updated
- 2026-11-02
NVD
Protection mechanism failure in Windows Event Logging Service allows an authorized attacker to disclose information over a network.
- Record
CVE-2026-34348- CVSS 3.1
- 6.5 Medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N - Weakness
- CWE-693
- Updated
- 2026-11-02
Affected products
- microsoft windows 10 version 1809
- microsoft windows 10 version 21h2
- microsoft windows 10 version 22h2
- microsoft windows 11 version 23h2
- microsoft windows 11 version 24h2
- microsoft windows 11 version 25h2
- microsoft windows 11 version 26h1
- microsoft windows server 2019
- microsoft windows server 2019 (server core installation)
- microsoft windows server 2022
- microsoft windows server 2025
- microsoft windows server 2025 (server core installation)
Public exploits
Links only. Every CVE stores no exploit code.
| Source | Link | Date |
|---|---|---|
| PoC in GitHub | HORKimhab/CVE-2026-34348 | 2026-08-10 |
History
| Recorded | Changed | Sources |
|---|---|---|
| first indexed | CVE List, EUVD, GitHub Advisories, NVD, PoC in GitHub |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2026-34348 is a medium vulnerability (CVSS 6.5) in Microsoft Windows 10 Version 1809, published July 14, 2026. Public exploit code exists. EPSS puts the chance of exploitation in the next 30 days at 1.00%, the 62nd percentile. No source names a fixed version.