CVE-2021-47773: Dynojet Power Core 2.3.0 contains an unquoted service path vulnerability in the DJ.UpdateService that allows l

Routine

HIGH 7.8DOWNGRADE

CVE-2021-47773 is a high-severity flaw (CVSS 7.8) affecting power core. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Dynojet Power Core 2.3.0 contains an unquoted service path vulnerability in the DJ.UpdateService that allows local authenticated users to potentially execute code with elevated privileges. Attackers can exploit the unquoted binary path by placing malicious executables in the service's file path to gain Local System access.

Why this priority

High severity
Public exploit reference

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	7.8 (High)
Attack vector	Local
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.3% (top 77%)
CISA exploited list	No
Weakness	CWE-428
Published	2026-01-15
Last modified	2026-06-17

Publisher (CNA): VulnCheck · Vendor: dynojet

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-01-15 16:16 UTCPublished CVE record published
2026-06-17 04:18 UTCUpdated Record last modified

dynojet power core DOWNGRADE

Affected: 2.3.0

Fixed in: no fixed release known

Safe to downgrade to: a release before 2.3.0

1. Check installed version

apt-cache policy power-core || rpm -q power-core || power-core --version

2. No fixed release: DOWNGRADE to a release before 2.3.0 (Debian / Ubuntu)

apt-cache madison power-core sudo apt install power-core=<VERSION_BEFORE_2.3.0> sudo apt-mark hold power-core

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list power-core sudo dnf downgrade power-core-<VERSION_BEFORE_2.3.0> sudo dnf versionlock add power-core

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2021-47773?

power core: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2021-47773 being exploited?

CVE-2021-47773 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2021-47773 affect?

CVE-2021-47773 affects power core. Severity is high (CVSS 7.8). Dynojet Power Core 2.3.0 contains an unquoted service path vulnerability in the DJ.UpdateService that allows local authenticated users to potentially execute code with elevated privileges. Attackers can exploit the unquoted binary path by p

How urgent is CVE-2021-47773?

Priority 38/100. High severity; Public exploit reference

References

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