CVE-2026-68819
Windows Network File System Denial of Service Vulnerability
Buffer over-read in Windows Network File System allows an unauthorized attacker to deny service over a network.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- High
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- None
- Integrity
- None
- Availability
- High
Exploit likelihood
What each source reports
CVE List Score used
Windows Network File System Denial of Service Vulnerability
Buffer over-read in Windows Network File System allows an unauthorized attacker to deny service over a network.
- Record
CVE-2026-68819- CVSS 3.1
- 5.9 Medium
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C - Weakness
- CWE-126
- Updated
- 2026-11-02
EUVDEUVD-2026-56467
Buffer over-read in Windows Network File System allows an unauthorized attacker to deny service over a network.
- Record
EUVD-2026-56467- CVSS 3.1
- 5.9 Medium
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-x7cr-3chg-3844
Buffer over-read in Windows Network File System allows an unauthorized attacker to deny service...
Buffer over-read in Windows Network File System allows an unauthorized attacker to deny service over a network.
- Record
GHSA-x7cr-3chg-3844- CVSS 3.1
- 5.9 Medium
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H - Weakness
- CWE-126
- Updated
- 2026-11-02
NVD
Buffer over-read in Windows Network File System allows an unauthorized attacker to deny service over a network.
- Record
CVE-2026-68819- CVSS 3.1
- 5.9 Medium
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H - CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Weakness
- CWE-126
- Updated
- 2026-11-02
Affected products
- microsoft windows 10 version 1607
- microsoft windows 10 version 1809
- microsoft windows server 2012
- microsoft windows server 2012 (server core installation)
- microsoft windows server 2012 r2
- microsoft windows server 2012 r2 (server core installation)
- microsoft windows server 2016
- microsoft windows server 2016 (server core installation)
- microsoft windows server 2019
- microsoft windows server 2019 (server core installation)
- microsoft windows server 2022
- microsoft windows server 2025
History
| Recorded | Changed | Sources |
|---|---|---|
| first indexed | CVE List, EUVD, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2026-68819 is a medium vulnerability (CVSS 5.9) in Microsoft Windows 10 Version 1607, published August 11, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.98%, the 62nd percentile. No source names a fixed version.