What’s Vulnerable › Vulnerabilities
CVE-2026-6645: Insecure Search Path Vulnerability in PaperCut Print Deploy Client for Windows
- Severity: high (CVSS 7.3 v4.0)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.2% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2026-06-22 · updated 2026-10-25
- Weakness: CWE-427
Description
An insecure process execution vulnerability exists in the pc-printer-updater.exe component of the PaperCut Print Deploy Client for Windows. The application, which typically operates with high-level system privileges, attempts to perform an internal validation check by invoking a secondary system utility using an unqualified file reference. Because the application does not specify an absolute path to this utility, it relies on the operating system's default search order to locate the executable. Under specific conditions, a local attacker with the ability to modify directories within the system's search path could plant a malicious binary that mimics the expected utility. This could result in the malicious code being executed with SYSTEM privileges, leading to a full compromise of the affected host.
Affected products
- PaperCut Print Deploy: before 1.10.4178 — fixed in 1.10.4178
How to fix
Upgrade to a fixed version: PaperCut Print Deploy 1.10.4178. Check the vendor advisory for mitigations.
References
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