CISA KEV Alert: CVE-2026-68820 — Microsoft Windows Ancillary Function Driver for...

ANALYST: BIVASH KUMAR NAYAK (CHIEF SECURITY ARCHITECT) • PUBLISHED: Wednesday, 12 August 2026
CISA KEV Alert: CVE-2026-68820 — Microsoft Windows Ancillary Function Driver for
■ Executive Risk Command Center
CVE ID
CVE-2026-68820
CISA KEV
LISTED
Remediation due 2026-08-25
Affected
Windows Ancillary Function Drive
Exploitation confirmed? — YES — CISA KEV listed
Urgent remediation? — YES — follow the cited CISA/vendor action
CISA required action — Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage

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Source-linked automated security intelligence with explicit evidence status and provenance.

🚨 CISA FEDERAL MANDATE — ACTIVE EXPLOITATION CONFIRMED

This vulnerability is actively exploited in the wild. Federal agencies face a legal remediation deadline. Enterprise organizations should treat this with equivalent urgency. CYBERDUDEBIVASH® provides rapid vulnerability assessment and remediation guidance.

🔍 CVE-2026-68820  |  📅 August 12, 2026  |  📂 CISA KEV  |  🛡 CYBERDUDEBIVASH®
CISA KEV ALERT · UNRATED
CDB-CTI-2026-EF64F42C608E · Generated 2026-08-12T10:08:25.586330Z
Executive Summary

Microsoft Windows Ancillary Function Driver for WinSock contains a use-after-free vulnerability that allows an authorized attacker to elevate privileges locally. CISA has added CVE-2026-68820 (Microsoft Windows Ancillary Function Driver for WinSock ) to the Known Exploited Vulnerabilities catalog, confirming active exploitation in the wild. Federal agencies required to remediate by 2026-08-25. Required action: Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.

Decision: Validate relevance and exposure using the cited source and internal evidence before treating this record as an incident, confirmed compromise, or customer-specific finding.

Threat Classification and Evidence Status
Intelligence family
CISA KEV Alert
Technical severity
UNRATED
Exploitation
Confirmed — CISA KEV listed
Patch/remediation
CISA required action: Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.
Verified Facts
Source type: CISA KEV Alert
Source publication time: 2026-08-11T00:00:00+00:00
CVE: CVE-2026-68820
Affected product: Windows Ancillary Function Driver for WinSock
Exploitation evidence: CISA KEV listed on 2026-08-11; federal due date 2026-08-25
Technical Analysis

Microsoft Windows Ancillary Function Driver for WinSock contains a use-after-free vulnerability that allows an authorized attacker to elevate privileges locally. CISA has added CVE-2026-68820 (Microsoft Windows Ancillary Function Driver for WinSock ) to the Known Exploited Vulnerabilities catalog, confirming active exploitation in the wild. Federal agencies required to remediate by 2026-08-25. Required action: Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.

Vulnerability class: Unclassified. Assessment: Active exploitation is confirmed by the cited evidence; prioritize exposure confirmation and the authoritative remediation action.

Exposure and Remediation Decisions
P0 — Inventory: Confirm the affected product and version against authoritative vendor/NVD data; prioritize internet-facing and business-critical assets.
P0 — Remediation: CISA required action: Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.
P1 — Compensating controls: Restrict exposure, enforce least privilege, and apply vendor-supported mitigations when immediate remediation is not possible.
P1 — Retrospective review: Search only the telemetry relevant to the affected component and validated vulnerability class; absence of alerts does not prove absence of exploitation.
Source Evidence Extract
CVE ID: CVE-2026-68820
Vendor/Product: Microsoft — Windows Ancillary Function Driver for WinSock
Vulnerability Name: Microsoft Windows Ancillary Function Driver for WinSock Use-After-Free Vulnerability
Date Added to KEV: 2026-08-11
Federal Remediation Deadline: 2026-08-25
Description: Microsoft Windows Ancillary Function Driver for WinSock contains a use-after-free vulnerability that allows an authorized attacker to elevate privileges locally.
Required Action: Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.
CISA Notes: https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2026-68820 ; BOD 26-04: https://www.cisa.gov/news-events/directives/bod-26-04-prioritizing-security-updates-based-risk ; Forensics Triage Requirements: https://www.cisa.gov/news-events/directives/bod-26-04-implementation-guidance-prioritizing-security-updates-based-risk ; https://nvd.nist.gov/vuln/detail/CVE-2026-68820

This extract is escaped and rendered from the ingested source record; generated analysis is not presented as a source fact.

Detection Engineering
DETECTION STATUS: WITHHELD_INSUFFICIENT_EVIDENCE

The source record does not contain enough product-specific telemetry or observables for a defensible rule.

Confirm affected assets and versions, then collect the product's application, authentication, process, and network telemetry.
Use vendor-provided exploit indicators or a validated reproduction before publishing threat-specific detection logic.
References
Provenance and Review Status
Report IDCDB-CTI-2026-EF64F42C608E
Source systemcisa_kev
Source published2026-08-11T00:00:00+00:00
Source-record SHA-256ef64f42c608ead2c3b6c98339b75af63f022c006c336e16231aad230175fd4c7
Generated UTC2026-08-12T10:08:25.586330Z
Review statusAutomated intelligence synthesis — not human reviewed
CertificationPublic reference draft — not a certified customer deliverable
Automated intelligence synthesis — not human reviewed. Public reference draft — not a certified customer deliverable. Customer-specific action requires exposure validation and accountable human approval.

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Intelligence source: https://www.cisa.gov/known-exploited-vulnerabilities-catalog?search_api_fulltext=CVE-2026-68820 · CYBERDUDEBIVASH® SENTINEL APEX Evidence Engine v3.0