CVE-2026-68831
Windows Defender Firewall Service Information Disclosure Vulnerability
- Published
- Updated
- Reserved
- Assigned by
- microsoft
Description
Files or directories accessible to external parties in Windows Defender Firewall Service allows an authorized attacker to disclose information locally.
Timeline
ID reserved
By microsoft
- 39 days later
· 39 days later
Published
- 53 days later
· 53 days later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| microsoftCNA (assigner) | 3.1 | Medium5.5 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C |
| NVDNVD · Analyzed | 3.1 | Medium5.5 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N |
- EPSS (exploitation in 30 days)
- 0.55% · top 53% of all CVEs (7 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: partial
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.5.
Weakness
Affected products
Microsoft · Windows 10 Version 1607
- affected 10.0.14393.0 – < 10.0.14393.9512
Microsoft · Windows 10 Version 1809
- affected 10.0.17763.0 – < 10.0.17763.9245
Microsoft · Windows 10 Version 21H2
- affected 10.0.19044.0 – < 10.0.19044.7725
Microsoft · Windows 10 Version 22H2
- affected 10.0.19045.0 – < 10.0.19045.7725
Microsoft · Windows 11 version 23H2
- affected 10.0.22631.0 – < 10.0.22631.7582
Microsoft · Windows 11 Version 23H2
- affected 10.0.22631.0 – < 10.0.22631.7582
Microsoft · Windows 11 Version 24H2
- affected 10.0.26100.0 – < 10.0.26100.9445
Microsoft · Windows 11 Version 25H2
- affected 10.0.26200.0 – < 10.0.26200.9445
Microsoft · Windows 11 version 26H1
- affected 10.0.28000.0 – < 10.0.28000.2954
Microsoft · Windows Server 2012
- affected 6.2.9200.0 – < 6.2.9200.26349
Microsoft · Windows Server 2012 (Server Core installation)
- affected 6.2.9200.0 – < 6.2.9200.26349
Microsoft · Windows Server 2012 R2
- affected 6.3.9600.0 – < 6.3.9600.23398
Microsoft · Windows Server 2012 R2 (Server Core installation)
- affected 6.3.9600.0 – < 6.3.9600.23398
Microsoft · Windows Server 2016
- affected 10.0.14393.0 – < 10.0.14393.9512
Microsoft · Windows Server 2016 (Server Core installation)
- affected 10.0.14393.0 – < 10.0.14393.9512
Microsoft · Windows Server 2019
- affected 10.0.17763.0 – < 10.0.17763.9245
Microsoft · Windows Server 2019 (Server Core installation)
- affected 10.0.17763.0 – < 10.0.17763.9245
Microsoft · Windows Server 2022
- affected 10.0.20348.0 – < 10.0.20348.5622
Microsoft · Windows Server 2025
- affected 10.0.26100.0 – < 10.0.26100.33438
Microsoft · Windows Server 2025 (Server Core installation)
- affected 10.0.26100.0 – < 10.0.26100.33438
References (1)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://trackcve.app/cve/CVE-2026-68831)Record last updated .