What it is
CVE-2026-68820 is a vulnerability affecting Microsoft Windows 10 Version 1607 and 19 other products. Use after free in Windows Ancillary Function Driver for WinSock allows an authorized attacker to elevate privileges...
Vulnerability report
Exploited in the wild
Confirmed confidence
In CISA KEV
CVE-2026-68820
Windows 10 Version 1607
Microsoft / Windows 10 Version 1607 · affected before 10.0.14393.9418
- Severity
- CVSS 7.0 · High
- Confidence
- Confirmed
- Exploit status
- Exploited in the wild
- EPSS
- —
- First observed
- —
- Last observed
- —
Decision summary
What security teams need to know first
Direct answers before the deeper technical record.
Is it exploited?
Yes. KEV Intelligence tracks this CVE as a known exploited vulnerability. Confidence is confirmed.
Who is affected?
Microsoft / Windows 10 Version 1607 affected before 10.0.14393.9418.
What should we do?
Prioritize remediation. Validate affected assets and apply vendor fixes on an accelerated timeline.
Overview
Windows 10 Version 1607
Use after free in Windows Ancillary Function Driver for WinSock allows an authorized attacker to elevate privileges locally.
Vendor
Product
Affected
Status
Microsoft
Windows 10 Version 1607
Before 10.0.14393.9418
Affected
Microsoft
Windows 10 Version 1809
Before 10.0.17763.9115
Affected
Microsoft
Windows 10 Version 21H2
Before 10.0.19044.7663
Affected
Microsoft
Windows 10 Version 22H2
Before 10.0.19045.7663
Affected
Microsoft
Windows 11 version 23H2
Before 10.0.22631.7517
Affected
Microsoft
Windows 11 Version 23H2
Before 10.0.22631.7517
Affected
Microsoft
Windows 11 Version 24H2
Before 10.0.26100.9168
Affected
Microsoft
Windows 11 Version 25H2
Before 10.0.26200.9168
Affected
Microsoft
Windows 11 version 26H1
Before 10.0.28000.2704
Affected
Microsoft
Windows Server 2012
Before 6.2.9200.26280
Affected
Microsoft
Windows Server 2012 (Server Core installation)
Before 6.2.9200.26280
Affected
Microsoft
Windows Server 2012 R2
Before 6.3.9600.23338
Affected
Microsoft
Windows Server 2012 R2 (Server Core installation)
Before 6.3.9600.23338
Affected
Microsoft
Windows Server 2016
Before 10.0.14393.9418
Affected
Microsoft
Windows Server 2016 (Server Core installation)
Before 10.0.14393.9418
Affected
Microsoft
Windows Server 2019
Before 10.0.17763.9115
Affected
Microsoft
Windows Server 2019 (Server Core installation)
Before 10.0.17763.9115
Affected
Microsoft
Windows Server 2022
Before 10.0.20348.5499
Affected
Microsoft
Windows Server 2025
Before 10.0.26100.33296
Affected
Microsoft
Windows Server 2025 (Server Core installation)
Before 10.0.26100.33296
Affected
- Published
- 11 Aug 2026
- Exploitation Reported
- 11 Aug 2026
- Attack vector
- Local
- Complexity
- High
- Privileges
- Low
- User interaction
- None
Tags
windows
microsoft
cisa
CVE References
- Windows Ancillary Function Driver for WinSock Elevation of Privilege Vulnerability msrc.microsoft.com · Vendor Advisory https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-68820
Exploitation evidence
Why KEV Intelligence marks this CVE as exploited
Third-party attestation and first-party sensor observation are shown separately so teams can judge the evidence chain.
Exploited in the wild
Microsoft CVRF
Independent exploitation attestation added to the KEV Intelligence record.
Known exploited vulnerability sources
Per-source evidence links for KEV attestations are available through the KEV Intelligence Pro API.
Learn about Pro API access| Source | Added |
|---|---|
| Microsoft CVRF First | 2026-08-11 07:00 UTC |
| Tenable Blog | 2026-08-11 18:04 UTC |
| CISA | 2026-08-11 18:59 UTC |
| CVE | 2026-08-11 20:01 UTC |
Detection
Operational artifacts and observed signals
Make the evidence actionable in scanner, SOC, and edge-control workflows.
Observed signals
- Request targets
- 0
- User-Agents
- 0
Raw values available in Pro and Enterprise.
Scanner coverage
No scanner integrations recorded yet.
Virtual patch status
No KEV Intelligence virtual patch is currently available. Future rules ship for ModSecurity, Cloudflare, and AWS WAF.
Learn about virtual patches →No detection artifacts or sensor request patterns are available for this CVE yet.
Check back as sensor telemetry and scanner integrations are updated.
Risk and context
Severity, weaknesses, and research context
CVSS v3.1
7.0
High
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C
EPSS
—
Weaknesses
Recent mention · TheHackerNews
Microsoft Patches 398 Flaws Including a Windows Driver Zero-Day Under Active Attack
Microsoft released its monthly security updates on Tuesday, and one of the flaws it closed is already being used in attacks. The bug sits in a core Windows kernel driver that handles network socket operations. An attacker with code already running on a machine can use it to...
Read full advisoryAll Mentions
Recent mention · TheHackerNews
Microsoft Patches 398 Flaws Including a Windows Driver Zero-Day Under Active AttackTheHackerNews · 11 Aug 2026
Microsoft released its monthly security updates on Tuesday, and one of the flaws it closed is already being used in attacks. The bug sits in a core Windows kernel driver that handles network socket operations. An attacker with code already running on a machine can use it to escalate to SYSTEM. That patch goes out first. The flaw is tracked as CVE-2026-68820 (CVSS score: 7.0) and is the only
Recent mention · Tenable Blog
Microsoft's August 2026 Patch Tuesday Addresses 398 CVEs (CVE-2026-68820)Tenable Blog · 11 Aug 2026
42Critical355Important1Moderate0LowMicrosoft addresses 398 CVEs in the eighth Patch Tuesday of 2026, with three zero-days, including one that was exploited in the wild.Microsoft patched 398 CVEs in its August 2026 Patch Tuesday release, with 42 rated critical, 355 rated as important and one rated as moderate. Our counts omitted two CVEs assigned by MITRE; CVE-2026-6726 and CVE-2026-6727.This month’s update includes patches for:.NET.NET Core.NET FrameworkAMD ZenActive Directory Certificate Services (AD CS)Application Information ServicesAzure Active DirectoryAzure CycleCloudAzure Monitor...
Recent mention · Check Point Blog
State Sponsored Hackers Use Fake Job Offers to Deliver New Zero Day ExploitCheck Point Blog · 11 Aug 2026
It typically begins the same way it has for years, with an approach from a recruiter offering a role at a company the target would recognize, accompanied by a PDF describing the position in convincing detail. That approach remains one of the most effective entry points used by state sponsored threat actors today, and Check Point Research has spent recent months tracking a new wave of it. Operation Dream Job, the long running campaign attributed to the North Korea affiliated Lazarus group, has resurfaced with a previously undisclosed Windows vulnerability (CVE-2026-68820), a newly identified...
Timeline
From disclosure to observed exploitation
-
KEV confirmed by CVE
Exploitation attested by an external source
-
Added to CISA KEV
Listed in the CISA Known Exploited Vulnerabilities catalog
-
KEV confirmed by Tenable Blog
Exploitation attested by an external source
-
CVE published
Vulnerability disclosed publicly
-
Added to KEV Intelligence KEV Feed
High-confidence, third-party attested exploitation
-
CVE ID reserved
Identifier reserved by the CNA
Pro API
Automate this intelligence
Confidence, exploit status, sensor telemetry, PoCs, scanner integrations, mentions, and tags are available programmatically for VM, SOC, and CTI workflows.
- Evidence confidence and provenance
- First-party sensor telemetry
- PoC and scanner references
- Affected versions and enrichment
- Automation-ready JSON delivery
GET /api/v2/pro/kevs/CVE-2026-68820
Free JSON includes basic KEV fields{
"cve_id": "CVE-2026-68820",
"confidence": "Confirmed",
"cvss_score": 7.0,
"epss_score": null,
"exploit_status": {
"exploited_in_the_wild": true,
"active_exploitation_observed": false
},
"sensor_telemetry": { "attempts": 0, "sensors": 0 }
}