CVE-2025-34190: Vasion Virtual Appliance Host authentication bypass (CVSS 7.8)

Description

Vasion Print (formerly PrinterLogic) Virtual Appliance Host versions prior to 25.1.102 and Application versions prior to 25.1.1413 (macOS/Linux client deployments) are vulnerable to an authentication bypass in PrinterInstallerClientService. The service requires root privileges for certain administrative operations, but these checks rely on calls to geteuid(). By preloading a malicious shared object overriding geteuid(), a local attacker can trick the service into believing it is running with root privileges. This bypass enables execution of administrative commands (e.g., enabling debug mode, managing configurations, or invoking privileged features) without proper authorization. While some actions requiring write access to protected files may still fail, the flaw effectively breaks the intended security model of the inter-process communication (IPC) system, allowing local attackers to escalate privileges and compromise system integrity. This vulnerability has been confirmed to be remediated, but it is unclear as to when the patch was introduced.

CVSS 3.1 breakdown

Attack vectorLocal

Attack complexityLow

Privileges requiredLow

User interactionNone

ScopeUnchanged

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected products

Vasion Virtual Appliance Applicationall versions

Vasion Virtual Appliance Hostall versions

Remediation

No fixed version is recorded in the NVD data. Check the vendor advisory for the latest guidance.

Patch & vendor advisories

References

https://help.printerlogic.com/saas/Print/Security/Security-Bulletins.htmVendor Advisory
https://help.printerlogic.com/va/Print/Security/Security-Bulletins.htmVendor Advisory
https://pierrekim.github.io/blog/2025-04-08-vasion-printerlogic-83-vulnerabilities.html#mac-auth-bypass-printerinstallerclientserviceExploitThird Party Advisory
https://www.vulncheck.com/advisories/vasion-print-printerlogic-authentication-bypass-via-ld-preload-hookingThird Party Advisory

Related CVEs

Recent high-severity vulnerabilities sharing a weakness type.

Frequently asked

Is CVE-2025-34190 being actively exploited?

CVE-2025-34190 is not in the CISA KEV catalog. A public exploit reference exists, so treat it as exploitable. Its EPSS exploit probability is 0.43%.

How severe is CVE-2025-34190?

CVE-2025-34190 has a CVSS 3.1 base score of 7.8, rated high. EPSS estimates a 0.43% probability of exploitation.

Which products are affected by CVE-2025-34190?

Affected products include Vasion Virtual Appliance Application, Vasion Virtual Appliance Host.

How do I fix CVE-2025-34190?

Apply the vendor's patch or advisory guidance, then verify no affected versions remain across your devices.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2025-34190 against the real software inventory on every managed device, every day. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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