CVE-2025-66575: VeeVPN 1.6.1 contains an unquoted service path vulnerability in the VeePNService that allows remote attackers

This month

HIGH 7.8DOWNGRADE

CVE-2025-66575 is a high-severity flaw (CVSS 7.8) affecting veepn. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

VeeVPN 1.6.1 contains an unquoted service path vulnerability in the VeePNService that allows remote attackers to execute code during startup or reboot with escalated privileges. Attackers can exploit this by providing a malicious service name, allowing them to inject commands and run as LocalSystem.

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	None
User interaction	Required
EPSS exploit chance	0.5% (top 60%)
CISA exploited list	No
Weakness	CWE-428
Published	2025-12-04
Last modified	2026-09-25

Publisher (CNA): VulnCheck · Vendor: veepn

Last updated 2026-09-25 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2025-12-04 21:16 UTCPublished CVE record published
2026-09-25 23:10 UTCUpdated Record last modified

veepn veepn DOWNGRADE

Affected: 1.6.1

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.6.1

1. Check installed version

apt-cache policy veepn || rpm -q veepn || veepn --version

2. No fixed release: DOWNGRADE to a release before 1.6.1 (Debian / Ubuntu)

apt-cache madison veepn sudo apt install veepn=<VERSION_BEFORE_1.6.1> sudo apt-mark hold veepn

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

dnf --showduplicates list veepn sudo dnf downgrade veepn-<VERSION_BEFORE_1.6.1> sudo dnf versionlock add veepn

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-2025-66575?

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

Is CVE-2025-66575 being exploited?

CVE-2025-66575 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-2025-66575 affect?

CVE-2025-66575 affects veepn. Severity is high (CVSS 7.8). VeeVPN 1.6.1 contains an unquoted service path vulnerability in the VeePNService that allows remote attackers to execute code during startup or reboot with escalated privileges. Attackers can exploit this by providing a malicious service na

How urgent is CVE-2025-66575?

Priority 42/100. High severity; Public exploit reference

References

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