Vulnerability report

Trusted Third Party Report Confirmed Confidence In CISA KEV

CVE-2019-1069

Task Scheduler Elevation of Privilege Vulnerability

Microsoft / Windows 10 Version 1703 · 1607

Watch CVE-2019-1069 Browse KEV feed
Severity
CVSS 7.8 · High
Confidence
Confirmed
Exploit status
Trusted Third Party Report
EPSS
6.2%
First observed
—
Last observed
—

Decision summary

What security teams need to know first

Direct answers before the deeper technical record.

What it is

An elevation of privilege vulnerability exists in the way the Task Scheduler Service validates certain file operations.

Have exploitation attempts been observed?

Yes. Exploitation attempts have been reported for this vulnerability. Previdian lists it as a known exploited vulnerability. Listed in CISA KEV. Also reported by third-party sources. Confidence is confirmed.

Who is affected?

Affected products include Microsoft / Windows 10 Version 1703 and 17 other products, including 1607, 1703, and 1709.

What should we do?

Prioritize remediation. Validate affected assets and apply vendor fixes on an accelerated timeline.

Overview

An elevation of privilege vulnerability exists in the way the Task Scheduler Service validates certain file operations

An elevation of privilege vulnerability exists in the way the Task Scheduler Service validates certain file operations. An attacker who successfully exploited the vulnerability could gain elevated privileges on a victim system.

To exploit the vulnerability, an attacker would require unprivileged code execution on a victim system. The security update addresses the vulnerability by correctly validating file operations.

microsoft Affected
windows_10
1607 1703 1709 1803
microsoft Affected
windows_server_2016
1803 1903
microsoft Affected
windows_server_2019
Before *
Microsoft Affected
Windows 10 Version 1703
Before publication
Microsoft Affected
Windows 10 Version 1803
Before publication
Microsoft Affected
Windows Server, version 1803 (Server Core Installation)
Before publication
Microsoft Affected
Windows 10 Version 1809
Before publication
Microsoft Affected
Windows Server 2019
Before publication
Microsoft Affected
Windows Server 2019 (Server Core installation)
Before publication
Microsoft Affected
Windows 10 Version 1709 for 32-bit Systems
Before publication
Microsoft Affected
Windows 10 Version 1709
Before publication
Microsoft Affected
Windows 10 Version 1903 for 32-bit Systems
Before publication
Microsoft Affected
Windows 10 Version 1903 for x64-based Systems
Before publication
Microsoft Affected
Windows 10 Version 1903 for ARM64-based Systems
Before publication
Microsoft Affected
Windows Server, version 1903 (Server Core installation)
Before publication
Microsoft Affected
Windows 10 Version 1507
Before publication
Microsoft Affected
Windows 10 Version 1607
Before publication
Microsoft Affected
Windows Server 2016
Before publication
Microsoft Affected
Windows Server 2016 (Server Core installation)
Before publication
View vendor advisory (opens in new tab)
Published
12 Jun 2019
Exploitation Attempts Reported
15 Mar 2022
Attack vector
Local
Complexity
Low
Privileges
Low
User interaction
None

Tags

cisa malware ransomware windows microsoft

CVE References

Exploitation evidence

Evidence of exploitation attempts

Third-party attestation and first-party sensor observation are shown separately so teams can judge the evidence chain.

Exploitation Attempts Observed in the Wild

CISA

Recorded 15 Mar 2022

A trusted third party reported exploitation attempts.

Targeted by Malware-Related Exploitation Attempts

CISA

Recorded 15 Mar 2022

Exploitation attempts against this vulnerability are associated with malware-related payloads.

Known exploited vulnerability sources

Per-source evidence links for KEV attestations are available through the Previdian Pro API.

Learn about Pro API access
Source Added
CISA First 2022-03-15 00:00 UTC
CVE 2026-08-12 04:21 UTC

Detection

Operational artifacts and observed signals

Make the evidence actionable in scanner, SOC, and edge-control workflows.

Scanner coverage

No scanner integrations recorded yet.

Virtual patch status

No Previdian 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

7.8 High

Potential damage if exploited. Separate from whether attackers are using it.

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C

EPSS

6.2%

Estimated chance of exploitation in the next 30 days. Previdian's warning comes from evidence, not this score.

Weaknesses

Improper Link Resolution Before File Access ('Link Following') CWE-59

All CVSS Scores

CVSS v3.1 7.8 High

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C

CVSS v2.0 7.2 High

AV:L/AC:L/Au:N/C:C/I:C/A:C

Timeline

From disclosure to observed exploitation attempts

  1. 04:21 UTC

    KEV confirmed by CVE

    Exploitation attempts reported by an external source

  2. 00:00 UTC

    Added to CISA KEV

    Listed in the CISA Known Exploited Vulnerabilities catalog

  3. 00:00 UTC

    Targeted by malware-related exploitation attempts

    Malware-related exploitation attempts or payloads reported

  4. 13:49 UTC

    CVE published

    Vulnerability disclosed publicly

  5. 00:00 UTC

    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.

Start 14-day Pro trial Read API docs
  • 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-2019-1069

Sample API response 
{
  "cve_id": "CVE-2019-1069",
  "confidence": "Confirmed",
  "cvss_score": 7.8,
  "cvss_estimated": false,
  "epss_score": 0.06167,
  "exploit_status": {
    "exploited_in_the_wild": true,
    "active_exploitation_observed": false
  },
  "sensor_telemetry": { "attempts": 0, "sensors": 0 }
}