CVE-2026-6645 PUBLISHED

Insecure Search Path Vulnerability in PaperCut Print Deploy Client for Windows

Assigner: PaperCut
Reserved: 20.04.2026 Published: 22.06.2026 Updated: 22.06.2026

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.

Metrics

CVSS Vector: CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:P/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H
CVSS Score: 7.3

Product Status

Vendor PaperCut
Product Print Deploy
Versions Default: unaffected
  • affected from 0 to 1.10.4178 (excl.)

Credits

  • Alex F. <support.solutions@jet-services.com> // JET Services reporter

References

Problem Types

  • CWE-427 Uncontrolled Search Path Element CWE

Impacts

  • CAPEC-549 Local Execution of Code