CVE-2022-39959: Panini Everest Engine 2.0.4 allows unprivileged users to create a file named Everest.exe in the %PROGRAMDATA%\

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HIGH 7.8DOWNGRADE

CVE-2022-39959 is a high-severity flaw (CVSS 7.8) affecting everest engine. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Panini Everest Engine 2.0.4 allows unprivileged users to create a file named Everest.exe in the %PROGRAMDATA%\Panini folder. This leads to privilege escalation because a service, running as SYSTEM, uses the unquoted path of %PROGRAMDATA%\Panini\Everest Engine\EverestEngine.exe and therefore a Trojan horse %PROGRAMDATA%\Panini\Everest.exe may be executed instead of the intended vendor-supplied EverestEngine.exe file.

Why this priority

High severity

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	0.6% (top 51%)
CISA exploited list	No
Weakness	CWE-428
Published	2022-10-07
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: panini

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

Am I affected?

Timeline

2022-10-07 22:15 UTCPublished CVE record published
2026-06-17 04:58 UTCUpdated Record last modified

panini everest engine DOWNGRADE

Affected: 2.0.4

Fixed in: no fixed release known

Safe to downgrade to: a release before 2.0.4

1. Check installed version

apt-cache policy everest-engine || rpm -q everest-engine || everest-engine --version

2. No fixed release: DOWNGRADE to a release before 2.0.4 (Debian / Ubuntu)

apt-cache madison everest-engine sudo apt install everest-engine=<VERSION_BEFORE_2.0.4> sudo apt-mark hold everest-engine

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

dnf --showduplicates list everest-engine sudo dnf downgrade everest-engine-<VERSION_BEFORE_2.0.4> sudo dnf versionlock add everest-engine

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-2022-39959?

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

Is CVE-2022-39959 being exploited?

CVE-2022-39959 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-2022-39959 affect?

CVE-2022-39959 affects everest engine. Severity is high (CVSS 7.8). Panini Everest Engine 2.0.4 allows unprivileged users to create a file named Everest.exe in the %PROGRAMDATA%\Panini folder. This leads to privilege escalation because a service, running as SYSTEM, uses the unquoted path of %PROGRAMDATA%\Pa

How urgent is CVE-2022-39959?

Priority 40/100. High severity

References

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