What is the CVSS score of CVE-2026-23667?

CVE-2026-23667 has a CVSS 3.1 base score of 7.0 (High). CVSS vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H. EPSS exploitation probability: 0.0%.

How to fix or mitigate CVE-2026-23667?

Within 24 hours: Identify all systems running Broadcast DVR and assess which are critical to operations; restrict access to the application to only essential personnel. Within 7 days: Implement network segmentation to isolate affected Broadcast DVR systems and enable enhanced monitoring for suspicious privilege escalation activity. Within 30 days: Develop and execute a migration or replacement plan for Broadcast DVR, or apply vendor patch immediately upon availability.

Windows 10 1809 CVE-2026-23667

HIGH

Use After Free (CWE-416)

2026-03-10 secure@microsoft.com

Use After Free Microsoft Windows 10 1809 Windows 10 21h2 Windows 10 22h2 Windows 11 23h2 Windows 11 24h2 Windows 11 25h2 Windows 11 26h1

7.0

CVSS 3.1 · NVD

View

Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata – not a confirmed exploit chain

Access

Gain local system access
Exploit

Exploit use-after-free in Broadcast DVR memory handling
Execution

Trigger privilege escalation
Impact

Execute code with elevated privileges

Vulnerability Assessment

Weakness	CWE CWE-416 OWASP Top 10:2025 A06:2021 - Vulnerable and Outdated Components ASVS 5.0 V15 - Secure Coding and Architecture Memory lifecycle management MITRE ATT&CK 2 techniques across 2 tactics: Execution, Privilege Escalation The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up. Sign in to read
Exploitation Conditions	Local system access with unprivileged user account. Broadcast DVR service must be running. Attacker requires ability to interact with DVR process memory or IPC mechanisms. Specific memory state manipulation needed to trigger use-after-free condition.
Impact	CVSS 7.0 (HIGH). Attack vector: Local. Complexity: High. Privileges required: Low. User interaction: None. Exploitable via local access.
Exploit ScenarioDerived	An attacker could exploit this vulnerability to compromise the affected system.

This Week Schedule remediation this week. Why: HIGH severity (CVSS 7.0-8.9).

Patch available 0.0% exploitation probability (EPSS)

Get an e-mail when this CVE is exploited, patched or re-scored. Free account.

Alert me

AnalysisAIv1 – Mar 12, 2026

Use after free in Broadcast DVR allows an authorized attacker to elevate privileges locally. [CVSS 7.0 HIGH]

RemediationAI

Monitor vendor advisories for a patch.

Affected Packages

microsoft windows_10_version_1809_10_0_17763_8511 fix: Windows 10 Version 1809 for 32-bit Systems 10.0.17763.8511, Windows 10 Version 1809 for x64-based Systems 10.0.17763.8511

microsoft windows_10_version_21h2_10_0_19044_7058 fix: Windows 10 Version 21H2 for 32-bit Systems 10.0.19044.7058, Windows 10 Version 21H2 for ARM64-based Systems 10.0.19044.7058, Windows 10 Version 21H2 for x64-based Systems 10.0.19044.7058

microsoft windows_10_version_22h2_10_0_19045_7058 fix: Windows 10 Version 22H2 for 32-bit Systems 10.0.19045.7058, Windows 10 Version 22H2 for ARM64-based Systems 10.0.19045.7058, Windows 10 Version 22H2 for x64-based Systems 10.0.19045.7058

microsoft windows_11_version_23h2_10_0_22631_6783 fix: Windows 11 Version 23H2 for ARM64-based Systems 10.0.22631.6783, Windows 11 Version 23H2 for x64-based Systems 10.0.22631.6783

microsoft windows_11_version_24h2_10_0_26100_8037 fix: Windows 11 Version 24H2 for ARM64-based Systems 10.0.26100.8037, Windows 11 Version 24H2 for x64-based Systems 10.0.26100.8037

microsoft windows_11_version_25h2_10_0_26200_8037 fix: Windows 11 Version 25H2 for ARM64-based Systems 10.0.26200.8037, Windows 11 Version 25H2 for x64-based Systems 10.0.26200.8037

microsoft windows_11_version_26h1_10_0_28000_1719 fix: Windows 11 Version 26H1 for ARM64-based Systems 10.0.28000.1719, Windows 11 version 26H1 for x64-based Systems 10.0.28000.1719

Source: OSV (Open Source Vulnerabilities)

Affects your stack

Affects 7 packages in microsoft

Checking this CVE against your own stacks and servers is part of the Basic plan and up.

Technical ContextAI · show details

Classified as CWE-416 (Use After Free). Affects Windows 10 1809. Use after free in Broadcast DVR allows an authorized attacker to elevate privileges locally.

Know when Windows 10 1809 gets its next vulnerability

Watch products and get an email when something new is published
Check this CVE against your own stack and servers
Exploit and PoC references, threat intelligence from 22 sources

Continue with Google Continue with GitHub

No credit card · 7-day full trial

Severity by source

NVD PRIMARY 7.0 HIGH

AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

Attack Vector

Local

Attack Complexity

High

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

DescriptionCVE.org

Use after free in Broadcast DVR allows an authorized attacker to elevate privileges locally.

Executive ViewAI

Why It Matters

CVE-2026-23667 is a privilege escalation vulnerability in Broadcast DVR that could allow authorized users to gain elevated system access on affected systems. Without an available patch, organizations using this software face ongoing risk and must implement immediate mitigating controls to reduce exposure.

Business Impact: High

Compensating Controls

Restrict Broadcast DVR access through network segmentation and firewall rules; disable the application if not critical to operations; implement privileged access management (PAM) controls to monitor and restrict privilege escalation attempts; enable enhanced logging and real-time alerting for anomalous user activity on affected systems; enforce principle of least privilege for all Broadcast DVR user accounts.

Threat Intelligence Overview

EPSS Score

0.0%

Top 91% exploitable

Data Quality

4 sources

Confidence: Medium

NVD

CVE.org

EPSS

VulDB

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue

Severity HIGH

CISA KEV No

Public POC No

EPSS 0.0%

Patch available Yes

Active threat No

Deciding rule

HIGH severity (CVSS 7.0-8.9)

What every action level means

Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.

Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.

This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.

This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.

Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

SSVC Decision· derived

Scheduled

Exploitation· derived

None

System Exposure· derived

Small

Automatable· derived

Human Impact

High

Priority Score

Low Medium High Critical

KEV: 0

EPSS: 0

CVSS: +35

PoC: 0

Weaponized: 0

Threat intel: 0

Gov advisory: 0

Attack Technique

Use After Free HIGH

Use-after-free vulnerabilities occur when a program continues to access memory through a pointer after that memory has been deallocated.

Affected Products (CPE)CVE.org

cpe:2.3:o:microsoft:windows_10_1809:*:*:*:*:*:*:x64:*

cpe:2.3:o:microsoft:windows_10_1809:*:*:*:*:*:*:x86:*

cpe:2.3:o:microsoft:windows_10_21h2:*:*:*:*:*:*:arm64:*

cpe:2.3:o:microsoft:windows_10_21h2:*:*:*:*:*:*:x64:*

cpe:2.3:o:microsoft:windows_10_21h2:*:*:*:*:*:*:x86:*

cpe:2.3:o:microsoft:windows_10_22h2:*:*:*:*:*:*:arm64:*

cpe:2.3:o:microsoft:windows_10_22h2:*:*:*:*:*:*:x64:*

cpe:2.3:o:microsoft:windows_10_22h2:*:*:*:*:*:*:x86:*

cpe:2.3:o:microsoft:windows_11_23h2:*:*:*:*:*:*:arm64:*

cpe:2.3:o:microsoft:windows_11_23h2:*:*:*:*:*:*:x64:*

cpe:2.3:o:microsoft:windows_11_24h2:*:*:*:*:*:*:arm64:*

cpe:2.3:o:microsoft:windows_11_24h2:*:*:*:*:*:*:x64:*

cpe:2.3:o:microsoft:windows_11_25h2:*:*:*:*:*:*:arm64:*

cpe:2.3:o:microsoft:windows_11_25h2:*:*:*:*:*:*:x64:*

cpe:2.3:o:microsoft:windows_11_26h1:*:*:*:*:*:*:arm64:*

cpe:2.3:o:microsoft:windows_11_26h1:*:*:*:*:*:*:x64:*

Related Vulnerabilities in Microsoft Windows Multiple Privilege Escalation

View all 37

CVE-2026-23668 HIGH POC

CVE-2026-24291 HIGH POC

CVE-2026-25169 MEDIUM

CVE-2026-25172 HIGH POC

8.0

CVE-2026-25173 HIGH POC

More in Windows 10 1809

View all

CVE-2021-40444 HIGH Act Now POC

8.8 Sep 15

Windows MSHTML component contains a remote code execution vulnerability that allows attackers to craft malicious ActiveX

CVE-2021-34527 HIGH Act Now POC

8.8 Jul 02

<p>A remote code execution vulnerability exists when the Windows Print Spooler service improperly performs privileged fi

CVE-2022-30190 HIGH Act Now POC

7.8 Jun 01

Windows MSDT (Microsoft Support Diagnostic Tool) allows remote code execution when called via the ms-msdt URL protocol f

CVE-2021-1732 HIGH Act Now POC

7.8 Feb 25

Windows Win32k contains an out-of-bounds write vulnerability enabling local privilege escalation to SYSTEM, exploited by

CVE-2021-1675 HIGH Act Now POC

7.8 Jun 08

Windows Print Spooler Remote Code Execution Vulnerability. Rated high severity (CVSS 7.8), this vulnerability is no auth

CVE-2021-36934 HIGH Act Now POC

7.8 Jul 22

Windows contains an elevation of privilege vulnerability known as 'HiveNightmare' or 'SeriousSAM' where overly permissiv

CVE-2023-36884 HIGH Act Now POC

7.5 Jul 11

Windows Search Remote Code Execution Vulnerability. Rated high severity (CVSS 7.5), this vulnerability is remotely explo

CVE-2024-21412 HIGH Act Now POC

8.1 Feb 13

Internet Shortcut Files Security Feature Bypass Vulnerability. Rated high severity (CVSS 8.1), this vulnerability is rem

CVE-2023-44487 HIGH Act Now POC

7.5 Oct 10

Denial of service against HTTP/2 server implementations allows remote unauthenticated attackers to exhaust server resour

CVE-2024-30088 HIGH Act Now POC

7.0 Jun 11

Windows Kernel contains a TOCTOU race condition vulnerability allowing local privilege escalation, exploited by the OilR

CVE-2018-8453 HIGH Act Now POC

7.8 Oct 10

An elevation of privilege vulnerability exists in Windows when the Win32k component fails to properly handle objects in

CVE-2025-33053 HIGH Act Now POC

8.8 Jun 10

Windows Internet Shortcut Files (.url) contain an external control vulnerability (CVE-2025-33053, CVSS 8.8) that enables

Same weakness CWE-416 – Use After Free

View all

CVE-2019-0708 CRITICAL POC

9.8

CVE-2015-5119 CRITICAL POC

9.8

CVE-2014-0322 HIGH POC

8.8

CVE-2012-4792 HIGH POC

8.8

CVE-2009-4324 HIGH POC

7.8

CVE-2015-0313 CRITICAL POC

9.8

CVE-2015-5122 CRITICAL POC

9.8

CVE-2013-2551 HIGH POC

8.8

Same technique Use After Free

View all

CVE-2012-4969 HIGH POC

8.1

References

Advisories & patches

ADVISORY https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-23667 ADVISORY https://vuldb.com/?id.349986

Search Externally

GitHub PoC

Exploit-DB PacketStorm Snyk Rapid7 Nuclei Templates Trickest PoC

Back