CVE-2021-47773Public exploit

SYSTEM privilege escalation via unquoted service path

Published Jan 15, 2026 · Updated Jan 15, 2026

Unquoted service path in Dynojet PowerCore 2.3.0 (Build 303) allows local users to execute code as Local System through DJ.UpdateService. DJ.UpdateService registers C:\Program Files\Dynojet Power Core\DJ.UpdateService.exe without quotation marks, so Windows can resolve an attacker-planted executable from an earlier path segment. A local authenticated account that can write to a searched path segment and start or restart the demand-start service gains Local System execution.

CVSS severity8.5
High
EPSS probability0.31%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Unquoted service path in Dynojet PowerCore 2.3.0 (Build 303) allows local users to execute code as Local System through DJ.UpdateService. DJ.UpdateService registers C:\Program Files\Dynojet Power Core\DJ.UpdateService.exe without quotation marks, so Windows can resolve an attacker-planted executable from an earlier path segment. A local authenticated account that can write to a searched path segment and start or restart the demand-start service gains Local System execution.

The record

CVE
CVE-2021-47773
Published
Jan 15, 2026
Updated
Jan 15, 2026
Vendor
Dynojet Research, Inc.
Product
PowerCore
Classifications
CWE-428, T1574.009
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Jan 15, 2026CVE publishedPublication date reported by the CVE source.
  2. Jan 15, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=2.3.0 (Build 303)

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

Dynojet Research, Inc. · PowerCoreversion=2.3.0 (Build 303)

Published CVSS scores

8.5VulnCheckCVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
7.8VulnCheckCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-428Unquoted Search Path or Element
T1574.009Hijack Execution Flow: Path Interception by Unquoted Path

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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