CVE intelligence and bounded remediation

CVE-2026-6892 — Improper handling of symbolic links in the installer of CUPS Printer Driver for macOS(*) may allow a local attacker with login...

Medium CVSS 5.1

Improper handling of symbolic links in the installer of CUPS Printer Driver for macOS(*) may allow a local attacker with login privileges to exploit a specially crafted symbolic link during installation to modify permissions of directories for which they would not normally have authorization. *:Canon PIXUS iX6800 Series CUPS Printer Driver for macOS Version 16.91.0.0 or earlier (Japan) Canon PIXMA MG2500 Series and iX6800 Series CUPS Printer Driver for macOS Version 16.91.0.0 or earlier (US and Europe)

Severity
Medium
CVSS
5.1 (4.0)
Published
2026-05-29
CISA KEV
Not currently listed
Ecosystem
software/application
Weaknesses
CWE-59

Affected products

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Matched remediation archetype

Path traversal, unsafe upload, and file handling

This catalog composition supplies bounded fallback guidance. Explicitly reviewed curated workflows load with the complete record below.

Check exposure

  • Trace untrusted filenames, archive entries, URLs, and path segments into read, write, include, extraction, and upload operations.
  • Identify filesystem roots, mount permissions, symbolic-link behavior, archive handling, and whether uploaded content is web-accessible or executable.
  • Review canonicalization and containment checks across supported operating systems and storage backends.

Remediate safely

  • Generate server-side storage identifiers and resolve paths beneath a fixed root using filesystem-aware containment checks.
  • Reject absolute, parent-relative, alternate-separator, device, link, and archive entries that escape the intended root.
  • Store uploads outside executable or served paths, validate type and size, and use private atomic temporary files.

Authoritative sources

Complete CVE record and remediation plan

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